Business Name Manhattan Gastroenterology Address 55 W. 17th Street, STE 102 New York, NY 10011 Phone 212-378-9983 Description At Manhattan Gastroenterology we utilize the latest technological advancements including the state of the art Quintron Breath Analyzer diagnosis of lactose, fructose and small intestinal bacterial overgrowth that has proven useful for Irritable Bowel Syndrome (IBS) treatment and management.