Nicholas V. Costrini, MD, Ph.D., MBA

Dr. Nicholas Vincent Costrini is a board-certified gastroenterologist. After attending the Medical College of Wisconsin, he completed his internship and residency in medicine at Washington University School of Medicine, where he became Chief Resident. There, he completed his GI fellowship as well as a postdoctoral molecular biology fellowship. He went on to hold numerous academic faculty positions at Washington University in St. Louis and the Medical College of Wisconsin.

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St. Francis Hospital 6001 E. Woodmen Road, 1st Floor, Colorado Springs, CO 80923

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Dr. Costrini’s career spans five decades. During that time, he built the largest solo GI practice and endoscopy center in the South and developed one of the region’s largest Inflammatory bowel disease (IBD) programs. Drawn to Colorado for its beautiful nature offerings, he took the opportunity to work for Peak Gastroenterology.

Dr. Costrini entered medicine due to its endless potential for discovery and has devoted himself to scholarship, philanthropy, and lifelong learning throughout his career. His favorite part of the job is applying recent advances in medical care to improve patients’ lives.

He enjoys sailing, playing with his dogs, and watching a large variety of sports. Dr. Costrini and his wife live in Colorado Springs. They have four grown children and three grandchildren. His daughter, son-in-law, and two grandchildren reside in Denver.


  • Medical School – Medical College of Wisconsin, Milwaukee, Wisconsin
  • Residency – Barnes Hospital, St. Louis, Missouri
  • Fellowship – Washington University School of Medicine, St. Louis, Missouri


  1. Relative Effects of Pregnancy, Estradiol and Progesterone on Plasma Insulin and Pancreatic Islet Insulin Secretion
  2. Plasma Insulin Disturbances in Primary Hyperparathyroidism
  3. In Vivo and In Vitro Metabolism of 3-Trifluoromethyl-4-Nitrophenol (TFM in rainbow trout)
  4. A Simple Method for Regulating and Monitoring Circulating Glucose Levels
  5. Effect of Diabetes, Hyperglycemia and Hyperinsulinemia on Human Intestinal Absorption of Glucose, Electrolytes and Water
  6. Binding Characteristics and Apparent Molecular Size of the Nerve Growth Factor Receptor from Rabbit Superior Cervical Ganglia
  7. Physical Properties of the Detergent-Extracted Nerve Growth Factor Receptor of Sympathetic Ganglia


  • Clinical Scholar’s Award from the American Gastroenterology Association
  • Special Recognition Award from Crohn’s and Colitis Foundation of America for efforts in establishing Savannah, Georgia Chapter of Crohn’s and Colitis Foundation.
  • Achievement Award from Georgia Gastroenterological and Endoscopic Society
  • Special Recognition Reward, “Physician of the Year,” presented by the Georgia Chapter of Crohn’s and Colitis Foundation of America
  • Elected as Fellow of the American Gastroenterological Association
  • Honored with endowed professorship from Washington University School of Medicine
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