Physicians Health Alliance, Inc. Gastroenterology physicians specialize in the focus of disorders that affect the digestive system, which include diseases affecting the gastrointestinal tract and its organs. These physicians have extensive training in the diagnosis and treatment of these disorders, which can include abdominal pain, irritable or inflammatory bowel disease (IBD) and cancers such as stomach and colorectal. These physicians provide endoscopy and colonoscopy services used for the diagnosis of these disorders and see patients out of their Scranton location. If you are interested in scheduling an appointment with a physician or have been referred to a PHA physician, please use the Providers link for their address and phone number. We look forward to providing you with exceptional care.