Dr. Ronald Fagan is the leading internist, gastroenterologist, and primary care doctor based in Bethpage Farmingdale, NY. Dr. Ronald Fagan earned his medical degree from the Universidad Autónoma de Guadalajara Facultad de Medicina Tabasco. After completion of his medical degree, he then moved back to the United States to complete his residency and internship at Long Island Jewish Medical Center.

It was at the Brooklyn Hospital Center that Dr. Fagan went on to complete his fellowship of gastroenterology, and is now part of Long Island Medical Group and is also affiliated with Long Island Jewish Medical Center and North Shore Hospital.

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.