Dr. Andrew Brent Shreiner, MD

Dr. Andrew Shreiner is a board-certified gastroenterologist and internist who graduated from the University of Michigan Medical School and completed his residency at the University of Michigan Health System. With 16 years of experience in gastroenterology and internal medicine, he brings extensive expertise to digestive health care. Dr. Shreiner is fluent in both English and Spanish.

Dr. Shreiner practices at multiple Corewell Health locations throughout Grand Rapids and Hastings, Michigan, including Corewell Health Butterworth Hospital and Corewell Health Pennock Hospital. He specializes in treating colon polyps, diverticular disease, and diverticulosis. His procedural expertise includes performing colonoscopies and lower GI endoscopies with sedation to ensure patient comfort during diagnostic procedures. Patients consistently rate Dr. Shreiner highly, giving him an average rating of 4.9 out of 5 stars.