Dr. Ronald Fagan is the head gastroenterologist, internist and primary care physician at LI Medical Group, which is located on the Hempstead Turnpike in Bethpage Farmingdale, New York (Long Island). Patients come to Dr. Fagan for a wide array of medical reasons, including annual physicals, ear infections, allergy testing, urinary tract infections, and sinus problems. He will always seek to fully review and understand each patient's medical history, including any medications someone may be taking (if any). This helps him provide accurate diagnoses of patients’ digestive issues, whether they relate to the small intestine, the gallbladder, the esophagus, etc. Schedule an appointment with Dr. Fagan at LI Medical Group.