Long Island Bariatric 715 Roanoke Ave, Riverhead, NY11901 Long Island Bariatric is a practice that specializes in creating dramatic transformations of patients suffering from…More morbid obesity. It offers a complete spectrum of bariatric procedures for patients. The office is home to Paayal Mehta, a board certified, fellowship trained advanced laparoscopic surgeon, specializing in bariatric surgery. The practice provides comprehensive pre- and post-operative support programs. It is affiliated with the Peconic Bay Medical Center.