Buck Patel


Bhaktasharan “Buck” Patel, M.D. is the Founder and President of Peak Gastroenterology Associates, formed in 1996. Since the summer of 2013, “PGA“ has grown to eleven providers, including ten board certified physicians and one board certified adult nurse practitioner.

Dr. Patel’s pleasant and happy disposition make him a patient favorite. Among his peers, Dr. Patel is regarded as an outstanding clinical mind with extremely low complication rates and high polyp detection rates. Dr. Patel currently chairs the Peer Review Committee at Memorial Hospital/University of Colorado Health and was the chief of the Peer Review Committee for the El Paso County Medical Society for five years (2005-2010).

The largest practice by volume of providers and by geographical distribution, PGA is also the fastest growing practice in the region. PGA proudly serves the entire Pikes Peak and Southern Colorado region from Castle Rock to Colorado Springs to Pueblo and beyond. With the area’s most widely experienced and trained gastrointestinal providers, PGA conducts procedures at more centers than any other practice, including its home surgery center, Front Range Endoscopy Centers. Multiple clinics are also available for the convenience of patients.


  • Medical School - Baroda Medical College, Gujarat, India
  • Residency - St. Francis Hospital, Evanston, Illinois
  • Fellowship - University of Southern California, Los Angeles, California

Publications: Click on a publication to see the full article

  1. Clinical investigator for SWOG protocol

Awards and Accolades:

  • Certificate of Merit from Ministry of Education, India
  • Member, Advisory Committee for Schering Corporation for alpha interferon
  • Speaker Bureau for pharmaceutical companies
  • Former medical director of CSHP surgical center

Prashant Krishnan


I was born in Houston, Texas and have also lived in Virginia, New Orleans, Detroit, and now Colorado Springs. It was the beauty of the land and the nature of the people that drew me to the area.My interests include reading, music, electronics, and adventure sports. As the lead singer in a rock band, I have given multiple performances. I love road trips and traveling abroad to learn about new cultures.

I decided to become a doctor at an early age. My desire to help others and establish therapeutic rapport with my patients has driven me to excel. I served as the chief fellow during my training. My areas of interest include therapeutic endoscopy, inflammatory bowel diseases, as well as liver and pancreatic disease.

Having a special passion for teaching, I strive to educate patients about their illnesses to enable them to be an active participant in their care.


  • Medical School - LSU Health Sciences Center, New Orleans, Louisiana
  • Residency - Henry Ford Hospital, Detroit, Michigan
  • Fellowship - Henry Ford Hospital, Detroit, Michigan

Publications: Click on a publication to see the full article

  1. Aortogastric fistula formation three days after endovascular stent placement
  2. Prolonged Intrahepatic Cholestasis and Renal Failure Secondary to Anabolic Androgenic Steroid Enriched Dietary Supplements: A Review of the Literature
  3. But I’m Better Than That: What to do When You Outshine Your CV. Unique Opportunities
  4. Body Mass Index Predicts Cecal Insertion Time: The Higher, The Better
  5. Evaluation of Anti-HBV Drug Resistant Mutations Among Patients with Acute Symptomatic Hepatitis B in the United States
  6. Acute Hepatitis B in an Urban Tertiary Care Hospital in the United States
  7. The success and complication rates of percutaneous transhepatic cholangiography (PTC) and a second endoscopic retrograde cholangiopancreatography (ERCP) after an initial failed ERCP
  8. Risk for development of hepatocellular carcinoma in patients with hepatitis B as a function of replicative status and cirrhosis in the United States
  9. Is wild type hepatitis B virus still the predominant form of infection or has there been a shift towards resistant strains?
  10. Etanercept may increase the risk for mycobacterium avium complex infections
  11. Fuse Case Study - Polyp
  12. Fuse Case Study - Worms
  13. Fuse Case Study - Bleed
  14. Fuse Case Study - Diverticulum

Awards and Accolades:

  • “Top Doc” Colorado Springs Style Magazine, September 2016
  • “Top Doc” Colorado Springs Style Magazine, September 2015
  • Board Member, Castle Rock Adventist Hospital, Castle Rock, Colorado
  • Department of Gastroenterology Section Chair, Memorial Hospital/UCH, Colorado Springs, Colorado
  • Clinical Associate Professor, Rocky Vista University, Parker, Colorado
  • Clinical Associate Professor, Kansas City University of Medicine and Biosciences, Kansas City, Missouri
  • American Gastroenterological Association Practice Advisory Network
  • Chief Fellow, Henry Ford Hospital, Detroit, Michigan
  • Valedictorian, Abilene Christian University, Abilene, Texas
  • “Top Doc” Colorado Springs Style Magazine, September 2014
  • Founder and lead singer in a band called “Unprepped”
  • LSU Board of Supervisors Scholarship
  • Full scholarship at University of Pittsburgh
  • Full scholarship at Abilene Christian University
  • Dean’s List at University of Pittsburgh
  • Dean’s List at Abilene Christian University
  • Cytec National Merit Finalist Scholarship

Scot Lewey


Dr. Lewey graduated from osteopathic medical school where he embraced the tradition of treating the whole person. He went on to complete his residency and fellowship training with board certifications in the specialties of internal medicine, pediatrics, and gastroenterology. For almost three decades, Dr. Lewey has practiced medicine, educated medical students and patients, and conducted clinical research.

Dr. Lewey is a Clinical Professor of Medicine at Rocky Vista University. His interest in these celiac disease and non-celiac gluten sensitivity stem from his personal and family experiences with allergies, celiac disease, and gluten and dairy sensitivity.

Dr. Lewey has has written several chapters in Cereal Killers-Celiac Disease and Gluten from A to Z. He has published a magnitude of articles.


  • Medical School - Kansas City University of Medicine and Biosciences, Kansas City, Missouri
  • Residency - Womack Army Hospital and William Beaumont Army Medical Center
  • Fellowship - Fitzsimons Army Medical Center, Denver, Colorado

Publications: Click on a publication to see the full article

  1. Evaluation of the throat culture as a follow-up for an initially negative enzyme immunoabsorbent assay rapid streptococcal antigen detection test
  2. Talc crystals in the liver of patients with chronic Hepatitis C infection
  3. Combination therapy with thymosin alpha-1 and interferon for the treatment of chronic hepatitis C infection: A randomized placebo-controlled, double-blind trial
  4. Gingival lesions and nasal obstruction in an immunosuppressed patient post liver transplantation
  5. Mastocytic Inflammatory Bowel Disease (MIBD): Increased prevalence of celiac-related HLA DQ genetics, cBir1 and antigliadin antibodies associated with response to gluten free diet
  6. Eosinophilic esophagitis (EoE): Higher than expected prevalence of atypical symptoms, HLA DQ8, elevated antigliadin and ASCA antibodies, and elevated mast cells in duodenum
  7. Clinical characteristics and prevalence of celiac disease and non-celiac gluten sensitivity presenting in a community based private gastroenterology clinic
  8. Prospective evaluation of the Brandt balloon to detect dysplasia in patients with Barrett’s esophagus
  9. Search for measles virus RNA by PCR in ileocolonic tissue samples in patients with Crohn’s disease
  10. A method of detecting M. paratuberculosis using PCR without southern blot
  11. Successful detection of high grade dysplasia in Barrett’s esophagus by a non-endoscopic esophageal cytology balloon
  12. Diagnosing Celiac Disease and Non-Celiac Gluten Sensitivity
  13. Endoscopic Cancer Screening, Gastroenterology Secrets
  14. Gluten Sensitivity: A Gastroenterologist’s Personal Journey Down the Gluten Rabbit Hole
  15. Understanding the Genetics of Gluten Sensitivity
  16. Celiac Disease Versus Gluten Sensitivity: New Role for Genetic Testing and Fecal Antibody Testing?
  37. Penrose Bloom March 2015 - Gallstones

To see more of Dr. Lewey’s many publications, please visit, or visit his blog at

Awards and Accolades:

  • Fellow status of several professional societies
  • “Top Doc” Colorado Springs Style Magazine, (2010-2014)
  • Consumers Research Council Top Gastroenterologists (2010-2012)
  • Certified Physician Executive
  • Clinical Professor, Rocky Vista University, Parker, Colorado
  • Clinical Professor, Kansas City University of Medicine and Biosciences, Kansas City, Missouri

James Rose


Dr. Rose completed his transplant hepatology fellowship at Integris-Baptist Medical Center and his gastroenterology fellowship at the University of Arkansas for Medical Sciences in Little Rock.

“Having a diverse background in medicine has given me the ability to not just focus on one aspect of the gastrointestinal tract, but to be a comprehensive gastroenterologist. My interests in gastroenterology include therapeutic endoscopy.”


  • Medical School - American University of the Caribbean
  • Residency - Pinnacle Health Hospital
  • Fellowship - University of Arkansas for Medical Sciences and Integris-Baptist Medical Center

Publications: Click on a publication to see the full article

  1. Gastric Metastasis of Merkel Cell Tumor – Uncommon complication of rare neoplasm
  2. Amiodarone Induced Cirrhosis Case Series
  3. Nutritional Effects of TIPSS – An often neglected benefit? A preliminary report
  4. Correlation of MELD Scoring to Portal Hypertension Changes among Patients awaiting orthotropic liver transplantation
  5. Novel approach to identify prognostic biomarkers in serum from patients with chronic HCV infections
  6. Novel approaches to identify distinct immunopathogenic biomarkers in patients with Hepatitis C Virus infection
  7. Liver Transplantation of hepatitis B infection in the United States
  8. Outcome after ERCP in patients with suspected sphincter of Oddi dysfunction: a prospective study
  9. Assessment of Alzheimer’s disease and Depression medications using phase II/III drug trials
  10. Titanium dioxide’s effect on microorganisms
  11. Microbiology and Virology Studies

Awards and Accolades:

  • MCP/Hahnemann University Golden Stethoscope Nomination
  • Epsom General Hospital Excellence in Radiologic Techniques Award

Lukasz KowalczykBanner

Say Bye to Fecal Incontinence

Hello! Thank you for your interest. My goal is for you to makes choices specifically suited to your own health preferences. This means you feel I have understood and addressed your concerns. I hope you leave your appointment with a feeling that I have clearly explained your plan of care, you understand it, and it matches your own personal health goals. This goes just beyond our personal interaction and extends to our full team: nurses, medical assistants, receptionists, schedulers, etc.


  • Medical School - University of Florida
  • Residency - University of Florida
  • Fellowship - University of Florida

Publications: Click on a publication to see the full article

  1. Algorithm for the management of endoscopic perforations: a quality improvement project
  2. Complications during natural orifice translumenal endoscopic surgery: endoscopic management of splenic laceration and hemorrhage
  3. Prospective randomized blinded comparison of a short-wire endoscopic retrograde cholangiopancreatography system with traditional long-wire devices
  4. Prospective trial comparing solid-state catheter and water-perfusion triple-lumen catheter for sphincter of Oddi manometry done at the time of ERCP
  5. Endoscopic therapy for chronic pancreatitis: technical success, clinical outcomes, and complications

Awards and Accolades:

  • “Top Doc” Colorado Springs Style Magazine, September 2016
  • Medical Informatics Certification from Oregon Health State University
  • “Top Doc” Colorado Springs Style Magazine, (2013-2014)
  • Outstanding Resident Teacher
  • Society of Teaching Scholars
  • Resident as Teachers Award


Joseph Moore


Dr. Moore is a graduate of the University of Minnesota School of Medicine and has received numerous professional accolades and recognitions throughout his long and distinguished career. He is a highly respected endoscopist with high polyp detection rates and patient satisfaction. He welcomes the opportunity to care for you and your loved ones.


  • Medical School - University of Minnesota
  • Residency - University of Oklahoma and Hennepin County General Hospital
  • Fellowship - University of Minnesota

Publications: Click on a publication to see the full article

  1. Technical Failures and Complications of Therapeutic (TX) ERCP: Impact on resource utilization
  2. Endoscopic Balloon Dilation compared to Sphincterotomy (EDES) for extraction of bile duct stones: Preliminary results
  3. Complications of Endoscopic Biliary Sphincterotomy
  4. Complications of Endoscopic Sphincterotomy in Cirrhotics: A prospective multi center study
  5. Pancreatitis from Endoscopic Sphincterotomy (ES), A prospective multi center 30-day study
  6. Hemorrhage from Endoscopic Sphincterotomy (ES) A prospective multi center 30 day study
  7. Complications of Endoscopic Sphincterotomy (ES) A prospective multi center 30-day study
  8. Results of a multicenter trial using a mechanical lithotripter for treatment of common bile duct stones
  9. Evaluation of Bipolar Electrocoagulation in Canine Stomach

Awards and Accolades:

  • Clinical Associate Professor, University of North Dakota School of Medicine
  • Clinical Associate Professor, University of Minnesota Duluth School of Medicine
  • Best Doctors in America: Central Region - 1996
  • Best Doctors in America: Southern Colorado - 1998
  • Medical Director, St Luke’s Home Care (Duluth, MN)

Paul Pinto


Dr. Pinto's practice is office-based, and he sees patients two days per week, on Mondays and Wednesdays. He is board-certified in Gastroenterology, and completed fellowships in both Gastroenterology as well as Hepatology (Liver Disease). He has a special interest in all aspects of liver disease.


  • Medical School - Universidad Autonoma de Ciudad Juarez and University of Southern California
  • Residency - University of Southern California Medical Center and University of Arizona
  • Hepatology Fellowship - University of Southern California
  • Gastroenterology Fellowship - University of Colorado

Publications: Click on a publication to see the full article

  1. Large volume paracentesis in nonedematous patients with tense ascites: Its effect on intravascular volume
  2. Acute hepatic injury following the withdrawal of immunosuppressive cancer chemotherapy in patients with hepatitis B
  3. Failure of colchicine to improve short-term survival in patients with severe alcoholic hepatitis
  4. Cyclosporine in the management of corticosteroid-resistant type 1 autoimmune hepatitis
  5. Colchicine treatment of alcoholic cirrhosis: A randomized placebo-controlled clinical trial of patient survival
  6. Hydrocholorthiazide as a third diuretic in cirrhosis with refractory ascites
  7. Rapid re-accumulation of ascites after large volume ascites: Its relationship to intravascular volume
  8. Does reduction in hepatic metabolic capacity signal sodium retention in alcoholic cirrhosis?
  9. Cyclosporine treatment of type 1 autoimmune chronic active hepatitis

Awards and Accolades:

  • Social Work Values in Allied Health Award
  • Advanced Research Training Award of the American Gastroenterological Association
  • Cardiorespiratory Scholarship
  • McCollum-Jamentez Scholarship
  • Graduation with Honors
  • California State Scholar
  • Member, Blue Key National Honor Fraternity
  • Dean’s List for Academic Achievement

Brodie Gerrard-Gough


Dr. Gerrard-Gough brings more than 35 years of general surgery and endoscopy to the practice. He is widely respected in the community and maintains longstanding relationships with providers and patients alike. His surgical background adds depth and an extra dimension to the practice.


  • Medical School - Baylor College of Medicine
  • Residency - U.S. Navy Surgical Residency

Publications: Click on a publication to see the full article

  1. How to drain a rectal abscess - 1976

Awards and Accolades:

  • Early naval promotion

Vanessa Lee


Dr. Lee comes to Peak Gastroenterology Associates from her practice in central Virginia. She trained at the University of Virginia in Internal Medicine and Gastroenterology. Dr. Lee is a general gastroenterologist who specializes in colon and rectal cancer screening, the evaluation and management of gastroesophageal reflux disease, inflammatory bowel disease, liver diseases, and irritable bowel syndrome. As a female physician, Dr. Lee appreciates the concerns and specific needs of the female patient. Dr. Lee is excited to be a part of Peak Gastroenterology Associates and to bring a woman's perspective to the practice.


  • Medical School - Jefferson Medical College, Philadelphia
  • Residency - University of Virginia Health System
  • Fellowship - University of Virginia Health System
  • Master of Science in Health Evaluation Sciences - University of Virginia

Publications: Click on a publication to see the full article

  1. NASH and cryptogenic cirrhosis: A histological analysis
  2. Addition of adult-to-adult living donation to liver transplant programs improves survival but at an increased cost
  3. Liver dysfunction associated with parenteral nutrition: What are the options?
  4. AGA Guidebook to ABIM maintenance of certification: 2007 Annual Update in Gastroenterology Supplement
  5. Resolution of decompensated cirrhosis from Wilson’s disease with zinc monotherapy: A therapeutic option?
  6. Contributor to Model for End Stage Liver Disease (MELD) predicts non-transplant surgical mortality in patients with cirrhosis

Awards and Accolades:

  • Participant in the Achieving Competence Today (ACT II) Program at the University of Virginia
  • Recipient of the Resident Scholar Travel Award for American Association for the Study of Liver Diseases (AASLD) 55th Annual Meeting
  • Recipient of a Travel Award for the Microbes and Mucosal Immunity Gastroenterology Symposium
  • Delaware Institute of Medical Education and Research Board of Directors Scholarship
  • Thomas Jefferson University Student Cancer Research Program
  • House Staff President University of Virginia

R Christopher Harmon


Dr. Harmon is a board certified Gastroenterologist who specializes in Advanced Endoscopy. He comes to Peak Gastroenterology Associates from his practice in central Virginia. After completing Internal Medicine residency and Gastroenterology fellowship at the University of Virginia, Dr. Harmon also completed an additional fellowship training in Advanced Endoscopy at Virginia Tech/Carilion Clinic.

Advanced endoscopy techniques include ERCP and endoscopic ultrasound. These techniques are used in the evaluation and management of pancreas and biliary diseases and often assist in the staging/diagnosis of cancers of the rectum, esophagus, stomach, pancreas and within the chest. Dr. Harmon is well-versed in management of complex esophagus and other GI luminal strictures with stent and dilation interventions.

Dr. Harmon prides himself in providing excellent and compassionate clinical care. He is excited to be a part of Peak Gastroenterology Associates.


  • Medical School - Marshall University School of Medicine
  • Residency - University of Virginia
  • Fellowship - University of Virginia
  • Advanced Fellowship - Virginia Tech/Carillon Clinic
  • Ph.D. in Toxicology - Marshall University School of Medicine

Publications: Click on a publication to see the full article

  1. A Mechanistic Study in the Nephrotoxicity of P-aminophenol (renal toxic metabolite of acetaminophen)
  2. In vitro toxicity of 2- and 4-chloroanaline: comparisons with 4-amino-3-chlorophenol, 2-amino-5-chlorophenol, and amino phenol
  3. Cephaloridine in vitro toxicity and accumulation in renal slices from normoglycemic and diabetic rats
  4. 2-Amino-5-chlorophenol toxicity in renal cortical slices from Fischer 344 rats: effect of antioxidants and sulfhydryl agents
  5. Risk factors for early hospital readmission after cardiac operations
  6. S-adenosylmethioine attenuates acetaminophen hepatotoxicity in C57BL/6 mice
  7. Time-dependent effect of paminophenol (PAP) toxicity in renal slices and development of oxidative stress
  8. Pyruvate reduces 4-aminophenol in vitro toxicity
  9. Management of patient with nocturnal GERD
  10. Herpes simplex virus hepatitis after renal transplantation
  11. Characterization of a novel model for investigation of radiocontrast nephrotoxiciity
  12. Mechanical pleurodesis aided by peritoneal drainage: a novel procedure for refractory hepatic hydrothorax
  13. Ethnic variation in nonalcoholic steatohepatitis]
  14. Combination of corticosteroids and anidulafungin associated with acute liver injury and hepatic encephalopathy – synergistic toxicity
  15. Treatment approaches in dyspepsia
  16. Inflammation in NASH

Awards and Accolades:

  • McPherson Award for Excellence in Research
  • Expert Reviewer – American Journal of Gastroenterology
  • Academic Skills Workshop Travel Award
  • Young Scientist Award
  • National Institutes of Health LRP Award
  • Expert Reviewer – Liver International
  • National Institutes of Health T32 Fellowship Training Grant
  • American Association for the Study of Liver Disease Travel Award
  • Polan Award – Highest academic standing (first in class ranking)
  • Alpha Omega Alpha
  • The American Society for Pharmacology and Experimental Therapeutics, Division of Toxicology Travel Award
  • Academic Achievement Award (perfect academic record)
  • Suma cum laude
  • Medical Student Academic Achievement Award
  • Joan C. Edwards Scholar
  • John Marshall Scholar
  • Sigma Xi Research Award

Mary Ann Huang

Dr. Huang is a Chicago native who has spent the last 16 years in the state of Michigan. She completed gastroenterology and transplant hepatology fellowships at the University of Michigan, and has worked6 primarily as a transplant hepatologist for the last 12 years at the University of Michigan, Henry Ford Hospital, and Beaumont Hospital.

Dr. Huang’s practice will encompass all of gastroenterology and hepatology, including a continued focus in patients with cirrhosis and liver transplant. She also has a long standing interest in non-alcoholic fatty liver disease, hepatitis C, and autoimmune liver disease along with
medical education.

Her philosophy as a physician is to serve as an empathetic guide for patients as they navigate through their GI and liver problems, and provide them with as much information as possible to make educated decisions about their care.

Outside of work, Dr. Huang enjoys spending time with her family. She tends to gravitate towards adventurous pursuits, including downhill skiing and mountain biking, and is a retired member of the Detroit Derby Girls.


  • Medical School - Loyola Stritch School of Medicine
  • Residency – University of Illinois at Chicago
  • Fellowship – University of Michigan
  • Master of Science in Clinical Research Design and Statistical Analysis – University of Michigan


  1. Huang MA, Greenson JD, Chao C, Anderson L, Peterman D, Jacobson J, Emick D, Lok ASF, Conjeevaram HS. 1-year intense nutritional counseling results in histological improvement in patients with non-alcoholic steatohepatitis: A pilot study. Am J Gastroenterol 2005; 100:1072-1081.
  2. Volk ML, Biggins SW, Huang MA, Argo CK, Fontana RJ, Anspach RR. Decision making in liver transplant selection committees: a multicenter study. Ann Intern Med 2011; 155(8):503-8.
  3. De Simone P, Nevens F, De Carlis L, Metselaar HJ, Beckebaum S, Saliba F, Jonas S, Sudan D, Fung J, Fischer L, Duvoux C, Chavin KD, Koneru B, Huang MA, Chapaman WC, Foltys D, Witte S, Jiang H, Hexham JM, Junge G, H2304 Study Group. Everolimus with reduced tacrolimus improves renal function in de novo liver transplant recipients: a randomized controlled trial. Am J Transplant 2012: 12(11): 3008-20.
  4. Stueck, A, Qu, Z, Huang, MA, Camprecios, G, Ferrell, L, Thung, S. Hepatocellular carcinoma arising in an HNF-1a-mutated adenoma in a 23 year old woman with maturityonset diabetes of the young: A case report. Semin Liver Dis 2015; 35:444-449.

Awards and Accolades:

  • AASLD/Schering Advanced Hepatology Fellowship 2003-04
  • University of Michigan/Pfizer K30 Graduate BridgeFunding Award 2003-04
  • AASLD Jan Albrecht Award 2004-05
  • AGA abstract reviewer (research in education and training) 2009-11
  • Top Docs Hour Detroit Magazine (Liver specialist) 2010-11, 2013-15
  • Castle Connolly Regional Top Doctor 2015

Maneesh Gupta

Dr. Gupta is a native of south Louisiana who comes to Peak Gastroenterology Associates by way of New Orleans. He completed his residency in Internal Medicine and his fellowship in Gastroenterology at the Louisiana State University Health Sciences Center in New Orleans, Louisiana.

Dr. Gupta is a general gastroenterologist who treats a variety of conditions affecting the GI tract. He specializes in the treatment of gastroesophageal reflux disease, inflammatory bowel disease, hemorrhoids, irritable bowel syndrome, as well as many other conditions. Additionally, he specializes in colon cancer screening and prevention.

In addition to performing therapeutic endoscopy and prescribing medications, Dr. Gupta is a strong believer in lifestyle modification to help treat a variety of abdominal symptoms. He will work with you to understand your specific needs and tailor a plan to help you achieve your goals. He is excited to be a part of Peak Gastroenterology Associates and looks forward to serving your future needs.


  • Medical School – Louisiana State University School of Medicine – New Orleans
  • Internal Medicine Residency – Louisiana State University Health Sciences Center – New Orleans
  • Gastroenterology Fellowship - Louisiana State University Health Sciences Center – New Orleans


  1. Gupta M, Woltering E. The Incidence of Over the Counter Medication Use in Patients with Mid-gut Neuroendocrine Tumors. American Surgeon. 2015 March; 81(3):278-281.
  2. Gupta MK, Pollack S, Hutchings JJ. Mesalamine induced symptom exacerbation of ulcerative colitis: Case report and brief discussion. World Journal of Gastrointestinal Pharmacology and Therapeutics. 2010 Dec; 1(6): 132-134.
  3. Gupta M, Jenkins LP, Engel LS, Hutchings JJ. Intestinal Spirochetosis Presenting as a Leiomyoma. Journal of Investigative Medicine. 2011 Feb; 59(2): 418.
  4. Gupta M, DiBuono B, Hutchings J. Hemophagocytic Lymphohistiocytosis Presenting as Acute Liver Failure in Patient with History of Drug Induced Hepatotoxicity. American Journal of Gastroenterology. 2011 Oct; 106(S2): S291.
  5. Gupta M, Landreneau S. Cholangiocarcinoma Presenting as Jaundice in a 34 Year Old Woman. American Journal of Gastroenterology. 2012 Oct; 107: S322-S323.

Poorna Ramachandran

Dr. Ramachandran is a California native, but went to Touro University, College of Osteopathic Medicine in Nevada. She trained in Internal Medicine and Gastroenterology in the Metro Detroit area. After a few years of working in Michigan, she moved with her husband, son, and their dog, Ruby to the South Denver area. In her spare time, she likes to attend fitness classes, travel, and read fantasy fiction.

Dr. Ramachandran has an interest in general GI, including but not limited to, diseases of the esophagus, stomach, irritable bowel syndrome, pancreaticobiliary disease, hepatology, inflammatory bowel disease, and colorectal cancer screening. She looks forward to serving the patient population of the South Denver area.

Medical Education:

  • 2001 - 2005 University of California, Davis, Bachelor of Arts
  • 2005 – 2009 Touro University, Nevada, College of Osteopathic Medicine
  • 2009 – 2010 Internship – Henry Ford Macomb Hospital, Clinton Township, Michigan
  • 2010 – 2012 Residency in Internal Medicine – Henry Ford Macomb Hospital, Clinton Township, Michigan
  • 2012 – 2015 Fellowship in Gastroenterology – St. John Oakland Hospital, Madison Heights, Michigan

Board Certification:

  • 2012 American Osteopathic Board of Internal Medicine – Internal Medicine
  • 2015 American Osteopathic Board of Internal Medicine – Gastroenterology

Reena Patel

Dr. Patel is a Indianapolis, Indiana native. She is trained in Internal Medicine (Phoenix, AZ) and Gastroenterology in the metro Detroit area. For the past few years, she has been practicing in the Boulder/Denver area and recently moved her practice into South Denver with PEAK.

Dr. Patel has an interest in general GI, including but not limited to, diseases of the esophagus, stomach, irritable bowel syndrome, pancreaticobiliary disease, hepatology, inflammatory bowel disease, and colorectal cancer screening. In her practice, she not only offers general endoscopic care but is also trained in advanced endoscopy, in particular ERCPs.

Her philosophy is geared towards a well rounded approach with focus on lifestyle management. She is open to considering naturopathic therapies, either alone, or in conjunction with western medical therapies, when appropriate.

In her spare time, Dr. Patel enjoys being active and you are likely to find her hiking, rock climbing, running, and most recently trying her hand at snowboarding. She is an avid sports fan and roots for her fellow Boilermakers and Colts.

Medical Education:

  • 2000-2004 Purdue University, Bachelor of Arts
  • 2004-2005 Indiana University Purdue University Indianapolis, Masters of Science
  • 2006-2010 St. George’s University, Grenada, West Indies, Medical Degree
  • 2010-2013 Residency in Internal Medicine – Maricopa Medical Center, Phoenix, Arizona
  • 2013-2016 Fellowship in Gastroenterology – St. John Providence/Providence Park Hospital, Southfield, Michigan

Board Certification:

  • 2014 American Board of Internal Medicine – Internal Medicine
  • 2016 American Board of Internal Medicine – Gastroenterology


  1. Raphael M, Patel R, Warren, B J. Updates in small bowel imaging and endoscopy. J Am Osteopath Assoc. 2010; 110(12):721-724.
  2. Hussain, S et. al., Multi-center evaluation of current knowledge of intestinal transplantation and rehabilitation among trainee physicians. Transplantation Proceedings. 47(2015):1988-1992.

Madhu Iyengar

Dr. Iyengar is a local product and a graduate of Highlands Ranch High School. He is thrilled to be a part of Peak Gastroenterology Associates and to be back in the South Denver area after many years away.

After earning his medical degree from the University of Kansas School of Medicine, he completed his residency and chief residency in Internal Medicine at the University of Southern California / Keck Medical Center. He then completed his fellowship in Gastrointestinal and Liver Diseases at the University of California, Irvine Medical Center. He is a member of the Alpha Omega Alpha (AOA) honor medical society.

Dr. Iyengar treats general GI conditions including irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and gastroesophageal reflux disease (GERD). He is also skilled in advanced diagnostic and therapeutic procedures including endoscopic retrograde cholangiopancreatography (ERCP).

He looks forward to meeting you and to help you achieve your goals.


  • Medical School – University of Kansas School of Medicine
  • Internal Medicine Residency – University of Southern California / Keck Medical Center
  • Gastroenterology Fellowship – University of California, Irvine Medical Center

Board Certification:

  • 2013 American Board of Internal Medicine – Internal Medicine
  • 2017 American Board of Internal Medicine – Gastroenterology

Mandeep Bhamra

Dr. Mandeep Bhamra is an advanced endoscopist with a special interest in biliary and pancreatic disorders, board certified in both Gastroenterology and Internal Medicine. He received his medical degree from India. He completed his Internal Medicine training at National Health Service Hospitals in West London, United Kingdom and Temple University, Philadelphia. After completing his training, he moved to Albany Medical Center for his Gastroenterology fellowship. He subsequently completed an additional advanced therapeutic fellowship at Albany Gastroenterology Consultants/St. Peter’s Hospital.

He enjoys providing individualized and compassionate patient-centered care. He performs a full range of advanced endoscopic procedures such as ERCP, cholangioscopy, pancreatoscopy, electro-hydraulic lithotripsy, endoscopic ultrasound, fine needle aspiration and biopsy, celiac plexus neurolysis, pancreatic pseudocyst drainage, Barrett’s esophagus treatment with RFA, EMR, endoscopic suturing, fistula closure, enteral stents, single balloon enteroscopy, and high-risk colon polypectomy.
He is involved in new advanced techniques such as ESD to remove growths in the digestive tract and POEM for achalasia. He is passionate about teaching and is actively involved in educational training.

When not practicing medicine, Dr. Bhamra enjoys spending time with his family. He enjoys traveling, music, hiking, and being outdoors.


  • Medical School - SRTR Medical College, Maharashtra, India
  • Residency - Ealing Hospital NHS Trust, London, UK
  • Residency - Temple University Hospital, Philadelphia
  • Fellowship - Albany Medical Center, Albany, New York
  • Advanced Fellowship - Albany Gastroenterology Consultants/St. Peter’s Hospital, Albany, NY


  1. Gastrointestinal Drug Interactions Affecting the Elderly
  2. Prevalence and Distribution of Adenomas in Black Americans Undergoing Colorectal Cancer Screening
  3. Dialysis-Associated Hepatopathy: Histopathologic Resemblance to Idiopathic Non-cirrhotic Portal Hypertension
  4. Multi-center experience using an electrocautery enhanced lumen-apposing metal stents for drainage of pancreatic fluid collections
  5. Does Dysplasia in Barrett’s esophagus happen more commonly at Z-line?
  6. Spyglass assisted management of a large cystic duct stone
  7. Post cholecystectomy, choleretic diarrhea has a negative statistical association with distal adenomatous colorectal
  8. EUS FNA/FNB of Pancreatic Mass Lesions - Single Tertiary Referral Center Experience
  9. Retrospective Study Comparing Yield of EUS 22G FNA/FNB of Abnormal Lymph Nodes - Single Tertiary Referral Center Experience
  10. An Interesting Case of Cholangiocarcinoma Masquerading as Bile Duct Stones
  11. Microscopic Colitis in Patients with Chronic Diarrhea Aged Older Than 50 Years
  12. An Interesting Case of Oropharyngeal Dysphagia after a Botox Injection for Sialorrhea
  13. A Unique Case of Primary Hepatic Neuroendocrine Carcinoma Causing Fulminant Liver Failure
  14. Diverticular Disease and Its Association With Colorectal Polyps
  15. EUS Should Be Performed Prior to ERCP in Patients With Gallstone Pancreatitis
  16. The Rate of Decline in the Levels of Bilirubin and Alkaline Phosphatase After Therapeutic ERCP for the Relief of Common Bile Duct Obstruction
  17. Heterotopic Pancreas: Five-Year Experience At Single Academic Institution
  18. Small Intestinal Neuroendocrine Tumors: A Five-Year Experience At an Endoscopy Referral Center
  19. Is Race an Independent Risk Factors for Proximal Adenomatous Polyps?
  20. A rare case of Primary lung cancer presenting as Upper GI bleed

Carlene Chun

Dr. Carlene Chun is a Board-Certified Gastroenterologist practicing in the South Denver area. Born and raised in Honolulu, Hawai’i, she has lived in California, Oregon, and Wisconsin prior to falling in love with Colorado.

Dr. Chun is a general gastroenterologist with a special interest in preventative medicine, women’s health, and in the treatment of inflammatory bowel disease. She also treats defecatory disorders, ranging from constipation, diarrhea, and fecal incontinence. She has a passion for evidence-based medicine.

She is dedicated to providing patient-centered medical care and is an elected member of the Arnold P. Gold Foundation’s Gold Humanism Honor Society.

In addition to her medical degree, Dr. Chun received a PhD from the University of Wisconsin-Madison in Microbiology and an MBA from the University of Hawai'i with an emphasis in international relations and organizational change and behavior.

Outside of her medical practice, Dr. Chun loves being a mother to her 3 boys, learning about different cultures through food and cultural exchange, gardening, and staying active exploring the outdoors with her family.


  • Medical School – Stanford University School of Medicine, Stanford, California
  • Residency – Oregon Health and Science University, Portland, Oregon
  • Fellowship – University of Colorado Anschutz, Aurora, Colorado
  • Doctorate in Medical Microbiology and Immunology – University of Wisconsin-Madison, Madison, Wisconsin
  • Master of Business Administration – University of Hawai’I, Manoa, Hawai’i

Awards and Accolades:

  • Mehta-Makhijani Fellow Award (First year fellowship award)
  • Digestive Disease Research Foundation (DDRF) Internship Award
  • Arnold P. Gold Foundation’s Gold Humanism Honor Society (GHHS)
  • Beta Gamma Sigma (BGS) – International Business Honor Society
  • Cum Laude
  • School of Biological Sciences Scholastic Honor Society

Professional Committees:

  • Rocky Mountain Chapter of the Crohn’s and Colitis Foundation Chapter Medical Advisor Committee (CMAC) Member


  1. Chun, C, L. Zheng, S. Colgan (2016) “Tissue metabolism and host-microbial interactions in the intestinal mucosa.” Free Radical Biology and Medicine. E-Pub PMID: 27687211
  2. Chun, C.L. G. Dunnington, G. Triadafilopoulos. (2013) “Holiday pains: a case of radiation-induced mesenteric ischemia.” Digestive Diseases and Sciences. 58(2):349-53. PMID: 22661275
  3. Kommareddy, S., C.L. Chun, G. Triadafilopoulos. (2013) “Always a Suspect: CMV in Ulcerative Colitis.” Digestive Diseases and Sciences. 56(7):1944-8. PMID: 23306856
  4. Chun, C.L., S. Aulakh, F. Komlos, G. Triadafilopoulos. (2012) “Tube to Freedom: use of a venting jejunostomy in a patient with chronic intestinal pseudo-obstruction.” Digestive Diseases and Sciences. 57(12):3076-9. PMID: 22407376
  5. Chun, C.L., C.A. Conti, G. Triadafilopoulos. (2011) “Cameron Ulcers: You Will Find Only What You Seek.” Digestive Diseases and Sciences. 56(12):3450-2. PMID: 21706202
  6. Chun, C.L., S. Eisenstat, S. Dormady, C. Lombard, G. Triadafilopoulos. (2011). “Esophageal Adenocarcinoma Presenting as Pseudo-Achalasia in a Patient with Juvenile Polyposis Syndrome: An Enemy Out of the Blue.” Digestive Diseases and Sciences. 56(7):1944-8. PMID: 21267778
  7. Chun, C.K., I. Koroleva, B. Brown, L. Manzella, E. Snir, H. Almabrazi, T. Scheetz, M. Bonaldo, T. Casavant, M.B. Soares, E. Ruby and M. McFall-Ngai (2008). “Effects of colonization, luminescence and autoinducer on host transcription in the developing squid-vibrio association.” PNAS 105(32): 11323-11328. PMID: 18682555
  8. Chun, C. K., T. E. Scheetz, et al. (2006). “An annotated cDNA library of juvenile Euprymna scolopes with and without colonization by the symbiont Vibrio fischeri.” BMC Genomics 16(7):154-164. PMID: 16780587
  9. Ozer, E. A., A. Pezzulo, D. M. Shih, C. Chun, C. Furlong, A. J. Lusis, E. P. Greenberg and J. Zabner (2005). “Human and murine paraoxonase 1 are host modulators of Pseudomonas aeruginosa quorum-sensing.” FEMS Microbiol Lett 253(1): 29-37. PMID: 16260097
  10. Chun, C. K., E. A. Ozer, M. J. Welsh, J. Zabner and E. P. Greenberg (2004). “Inactivation of a Pseudomonas aeruginosa quorum-sensing signal by human airway epithelia.” PNAS 101(10): 3587-90. PMID: 14970327

Barry Ross

Dr. Ross is originally from New England and received his medical education at the University of Rochester in upstate New York. His fellowship training was at the University of Connecticut and, after its completion, he became a partner with a gastroenterology group in Westerly, Rhode Island for 7 years. He practiced gastroenterology for 6 years in Portland, Oregon and recently moved to sunny Denver, Colorado.

His real enjoyment in medicine is getting to know patients as individuals and establishing relationships with them and their families while providing excellent medical care.

Dr. Ross’s practice encompasses general GI, including irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and gastroesophageal reflux disease (GERD), as well as specializing in colon cancer screening and prevention.

Outside of medicine, he enjoys spending time with his family and a multitude of pets, including 3 cats, a hedgehog, and a giant 20 lbs rabbit. He has visited over 150 National Parks & Monuments (and counting) and is a proud member of Red Sox Nation.


  • Medical School - University of Rochester, Rochester, New York
  • Residency - University of Rochester, Rochester, New York
  • Fellowship - University of Connecticut


  1. Aberrant crypt foci in patients with a positive family history of sporadic colorectal cancer

Ryan McWilliams

I have spent much of my life in this beautiful state of Colorado and I am a proud member of Peak Gastroenterology. I completed my medical school training, residency and gastroenterology fellowship at the University of Colorado Anschutz Medical Center.

I believe that building trustful relationships and working together as a team with patients allows us to be the most successful in reaching the goals towards wellness.

I am passionate about gastroenterology and care for a broad spectrum of disorders including complex esophageal disease, gastroesophageal reflux disease, anorectal disorders, irritable bowel syndrome, inflammatory bowel disease, liver disease and colorectal cancer prevention among others.

In my spare time I enjoy spending time with my family and friends. I enjoy being outdoors and enjoying all that this state has to offer.


  • Medical School – University of Colorado School of Medicine
  • Residency – University of Colorado Anschutz Medical Center
  • Fellowship – University of Colorado Anschutz Medical Center


  1. Phosphorylation of the PDZ domain modifies Shank2E binding with NaPiIIa
  2. A Notch1 Gene Copy Number Gain is a Prognostic Indicator of Worse Survival and a Predictive Biomarker to a Notch1 Targeting Antibody in Colorectal Cancer
  3. A crucial role for Kupffer cell-derived galectin-9 in regulation of T cell immunity in hepatitis C infection
  4. Liver Cyst Cytokines Promote Endothelial Cell Proliferation and Development
  5. Characterization of ionotrophic purinergic receptors in hepatocytes
  6. Shank2E binds Na/Pi co-transporter at the apical membrane of proximal tubule cells
  7. Characterization of an ankyrin repeat-containing Shank2 isoform (Shank2E) in liver epithelial cells
  8. Purinergic regulation of cholangiocyte secretion: identification of a novel role for P2X receptors
  9. Protein kinase C regulates the phosphorylation and oligomerization of ERM binding phosphoprotein 50

Awards and Accolades:

  • Emily Griffith Award- Colorado State University
  • Colorado State University, Class of 2000 Commencement Address
  • Eight time Colorado State University Deans List
  • Presidential Scholarship Recipient Colorado State University
  • Student Research Award, University of Colorado Health Sciences
  • NIDDK Student Research Grant
  • Achievement Rewards for College Scientists Scholar, 2005 and 2006
  • American College of Physicians Award for exemplary promise in medicine
  • Gold Foundation Humanism and Excellence in Teaching Nominee
  • Ruth L. Kirschstein National Research Service Award (NRSA) Institutional Research Training Grant

Jamie Thompson

Jamie is a graduate of the University of Colorado-Beth El College of Nursing. She has served as a Certified Nurse Practitioner in pulmonary medicine, hospitalist medicine, gastroenterology, and internal medicine. Jamie is board certified through the American Academy of Nurse Practitioners. She specializes in liver diseases and has focused on the long term treatment of gastrointestinal disorders in the outpatient setting.

“Treating my patients is an opportunity to help them more thoroughly understand their health issues and treatment options.”


  • Bachelors of Science in Nursing - University of Colorado-Beth El College of Nursing
  • Masters of Science in Nursing - University of Colorado-Beth El College of Nursing
  • Adult Nurse Practitioner - American Academy of Nurse Practitioners

Zahra Harrison


I am a certified advanced practice nurse and qualified health care provider and clinician with experience caring for patients in both gastroenterology and internal medicine. I am bilingual, fluent in English and Persian.

I am patient oriented, a critical thinker with a client service attitude, and high degree of integrity with well developed communication and teaching skills. I adapt to change. I look forward to participating in your health care.


  • Bachelors of Science in Nursing - University of Colorado Health Science Center
  • Masters of Science in Nursing - University of Colorado at Colorado Springs
  • Adult Nurse Practitioner - University of Colorado at Colorado Springs

Awards and Accolades:

  • Recipient of the Colorado Nursing scholarship at the University of Colorado at Colorado Springs
  • Magna Cum Laude from University of Colorado Health Science Center
  • Recipient of the Colorado Nursing Scholarship at the University of Colorado Health Science Center
  • Recipient of the 2005 and 2007 Hall of Excellence in Caring Award VA Medical Center
  • Preceptor at the VA for new employees

Leslie Monagle

Leslie comes to Peak Gastroenterology from Albuquerque, NM where she spent 2 years delivering primary care and 14 years providing general gastroenterology outpatient care. Treating Hepatitis C patients was a main focus of her care.

"I have always believed that a team approach to provide the best possible care in any situation. I am excited to be working with Peak Gastroenterology because they have so many different experts within the GI field. I draw from their knowledge base without hesitation to try to achieve the best possible outcomes for my patients. I am committed to enabling my patients to make informed choices about their care through education and good communication."

Medical Education:

  • Bachelor of Science in Nursing : New Mexico State University
  • Master of Science in Nursing/ Family Nurse Practitioner: University of New Mexico

Smita Patel

Morgan is a certified Adult-Gerontology Nurse Practitioner. Her background includes caring for patients in the fields of neurology, organ transplant, oncology, and gastrointestinal illnesses. A New Jersey native, Morgan is happy to call Colorado her home since 2016. She encourages patients to be involved in their own healthcare decisions and will work with you to create an individualized plan of care.


  • Bachelors of Science in Nursing: University of North Carolina at Wilmington
  • Masters of Science in Nursing: University of Cincinnati
  • Adult-Gerontology Nurse Practitioner: American Academy of Nurse Practitioners

Tara Shaw

Tara is a Colorado Springs native. Her decision to serve patients as a Nurse Practitioner came after caring for her brother through cancer. She has 10 years of experience in oncology where she provided care and support to patients with Thoracic and Gastrointestinal cancers. Her strong belief in holistic, patient centered care, prompted her participation in the development of the GI Oncology Multidisciplinary Clinic, a partnership between UCHealth and Peak Gastroenterology.

“It has been an honor and a privilege to touch the lives of so many individuals and their families in this community. I am excited to be a part of this amazing team and look forward to the opportunity to serve as a compassionate partner in your care and empower you to achieve your healthcare goals.”

Education and Certification:

  • Bachelor of Arts in Communication- University of Colorado at Colorado Springs
  • Bachelor of Science in Nursing-Colorado State University- Magna Cum Laude
  • Master of Science in Nursing- University of Colorado at Colorado Springs Beth-El College of Nursing
  • Board Certified Family Nurse Practitioner- American Academy of Nurse Practitioners
  • Oncology Certified Nurse- Oncology Nursing Certification Corporation
  • Advanced Motivational Interviewing- Colorado Colorectal Screening Program
  • Respecting Choices, Advanced Care Planning- Gunderson Health System

Chelsea Nelson

Chelsea comes to Peak from Sioux Falls, SD, where she spent 6 years practicing gastroenterology; her main focus of care has been inflammatory bowel disease and general GI.

She encourages patients to be involved in their health care decision making and focuses on individualized plans of care.

Education and Certification:

  • Bachelor’s of science in nursing- South Dakota State University
  • Master’s of science in nursing- University of Cincinnati
  • Family Nurse Practitioner: American Academy of Nurse Practitioners

Smita Patel


I am the Practice Administrator for Peak Gastroenterology Associates. I have worked with this group from 1996-2000 and resumed again from 2012 to present. My background includes over 15 years of hotel management experience. I received a Bachelor of Science from the University of Illinois and a Masters in Business Administration, Management and Healthcare Administration from Colorado Technical University.

I am an active member and volunteer of various community and diversity events. I am very passionate about personal growth. I believe by cultivating the habit of reading books, it not only opens the world of wisdom in front of us, it helps us in understanding the people and the surroundings around us. The deepest desire of the human spirit is to be acknowledged. What air is to the body, to feel understood is to the heart. At Peak Gastroenterology Associates, we will go to great lengths to ensure every patient is acknowledged and understood.


  • Master of Science in Management and Healthcare Administration - Colorado Technical University
  • Master of Business Administration - Colorado Technical University
  • Bachelor of Science in Biology - University of Illinois

Awards and Accolades:

  1. American College of Healthcare Executives (ACHE)
  2. American Medical Group Association (AMGA)
  3. Medical Group Management Association (MGMA)
WordPress Image Lightbox