Dr. Michael De Jesus

Mark Voellinger is a Gastroenterologist in Saint Clairsville, Ohio. Dr. Voellinger is rated as a Distinguished provider by MediFind in the treatment of Cronkhite-Canada Disease. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Barrett Esophagus, Hiatal Hernia, Endoscopy, and Gastrectomy.

A native of Western Pennsylvania, Dr. Robert Fusco graduated summa cum laude from the University of Pittsburgh. As an undergraduate, he was elected into Phi Beta Kappa scholastic honor society membership. In 1973, he received his medical degree with honors from the University and was elected into Alpha Omega Alpha honor medical society. His specialty training in Internal Medicine and Gastroenterology was at Duke University Medical Center in North Carolina. He has been in practice at Sewickley since 1977. Dr. Fusco is board-certified both in Internal Medicine and Gastroenterology. He is a member of the American Gastroenterological Association, the American Society of Gastrointestinal Endoscopy, the Pennsylvania Society of Gastroenterology, and the American Association of Ambulatory Surgery Centers.He was formerly president of Sewickley Medical Association, a multi-specialty group President of the Center for Digestive Health and Nutrition, and Medical Director of Three Rivers Endoscopy Center. He is certified in Advanced Cardiac Life Support. Dr. Fusco is active on the staff of Heritage Valley Health System Sewickley Campus and Three Rivers Endoscopy Center. He is a participating physician in Pennsylvania Blue Shield and Medicare. His practice is limited to Gastroenterology. He is married, has three children, seven grandchildren, and resides with his wife in Sewickley, PA. Dr. Fusco is rated as an Advanced provider by MediFind in the treatment of Cronkhite-Canada Disease. His top areas of expertise are Ulcerative Colitis, Hemorrhagic Proctocolitis, Gastric Dysmotility, Endoscopy, and Colonoscopy.

Amy Hosmer, MD, is a gastroenterologist certified in Internal Medicine and Gastroenterology by the American Board of Internal Medicine. She is a Clinical Associate Professor of Medicine at the University of Pittsburgh School of Medicine. She practices at University of Pittsburgh Physicians, Department of Medicine, Division of Gastroenterology, and is affiliated with UPMC Shadyside, UPMC Presbyterian, and UPMC Mercy. She completed her Internal Medicine Residency, Gastroenterology Fellowship, and Advanced Therapeutic Endoscopy Fellowship at the University of Michigan Health System in Ann Arbor, MI. Dr. Hosmer is rated as an Advanced provider by MediFind in the treatment of Cronkhite-Canada Disease. Her top areas of expertise are Gallstones, Neuroma Biliary Tract, Choledocholithiasis, Lithotripsy, and Endoscopy.