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Gary Chen, M.D. is an expert in the care of gastroenterology patients, and is well-versed on the latest treatments and advances in endoscopic technology. He is board certified by the American Board of Internal Medicine in Gastroenterology. Dr. Chen specializes in disorders of the digestive system. He offers expertise in conditions such as reflux, Barrettâ??s esophagus, upset stomach, stomach cancer screening, peptic ulcer, Celiac disease, diverticular diseases, irritable bowel syndrome, colon cancer screening, abdominal pain, abdominal bloating, constipation, diarrhea, hemorrhoids, obesity, and chronic liver diseases including hepatitis B and fatty liver.