Dr. Michael R. Raphael

Dr. Chey received his BA degree from the University of Pennsylvania and medical degree & training in internal medicine at the Emory University School of Medicine. He went on to complete a fellowship in gastroenterology at the University of Michigan. Since completing this fellowship, Dr. Chey has remained at the University of Michigan, where he is H. Marvin Pollard Professor of Gastroenterology, Professor of Nutrition Sciences, and Chief, Division of Gastroenterology & Hepatology. Dr. Chey runs a very active clinical research group which has received funding from federal and private sources. Dr. Chey has authored more than 400 manuscripts, reviews and book chapters yielding an H-index of 50. He is former Co-editor-in-Chief of the American Journal of Gastroenterology (2010-2016) and serves on the editorial boards of several other journals. He serves as a member of the Board of Trustees and in 2026, will become President of the American College of Gastroenterology. He is a member of the Board of Directors of the Rome Foundation and IFFGD. He has participated in and directed numerous national and international continuing medical education programs in gastroenterology, and has been elected to the roster of Best Doctors since 2001 and America's™ Top Doctors since 2009. Dr. Chey has received numerous awards including the Berk-Fise Award for outstanding clinical service from the ACG, the Distinguished Clinician Award from the AGA, Dean’s Outstanding Clinician Award, Dean’s Award for Innovation and Commercialization, and the Healio Disruptive Innovator Award. Dr. Chey is highly rated in 25 conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Diarrhea, Bowel Incontinence, Endoscopy, and Colonoscopy. Dr. Chey is board certified in Internal Medicine and Gastroenterology. Dr. Chey is currently accepting new patients.

Dr. Sharma is board certified in transplant hepatology and gastroenterology. Her clinical interests include liver transplantation, diagnosis and treatment of liver diseases including alcohol associated liver disease, nonalcoholic fatty liver disease, viral hepatitis, primary biliary cholangitis, autoimmune hepatitis and primary sclerosing cholangitis, hepatocellular carcinoma, cirrhosis, and complications of portal hypertension. Her research interests include access and disparities related to liver disease and liver transplant, liver allocation, renal dysfunction before and after liver transplantation. Dr. Sharma is highly rated in 23 conditions, according to our data. Her clinical expertise encompasses Hepatorenal Syndrome, Liver Failure, Hepatitis, Liver Transplant, and Kidney Transplant. Dr. Sharma is board certified in Transplant Hepatology and Gastroenterology. Dr. Sharma is currently accepting new patients.

Mustafa Alnounou is a Gastroenterologist practicing medicine in Flint, Michigan. Dr. Alnounou is highly rated in 53 conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Chronic Erosive Gastritis, Diverticular Disease, Gastrectomy, and Colonoscopy. Dr. Alnounou is currently accepting new patients.