Welcome to the Upper East Side Gastroenterology section where we list all gastroenterologists in 10022, 10065, 10021, 10075, 10028 and 10128 zip codes. Gastroenterologists are physicians who specialize in the diagnosis and treatment of disorders of the gastrointestinal tract, including the esophagus, stomach, small intestine, large intestine, pancreas, liver, gallbladder, and biliary system. Click on any business to obtain additional information and to pinpoint its location on the map or scroll down to view Upper East Side gastroenterologists by block. Be sure to hold your mouse over businesses in bold italics for a special pop-up description.