He is rated highly by his patients. Areas of expertise for Dr. Fahey include cushing's syndrome, minimally invasive parathyroidectomy, and thyroid cancer. He is affiliated with Weill Cornell Medicine. Dr. Fahey honors Coresource, POMCO, Blue Cross/Blue Shield, and more. He attended medical school at Weill Cornell Medical College. His residency was performed at New York-Presbyterian Hospital and a hospital affiliated with Weill Cornell Medical College. Distinctions awarded to Dr. Fahey include: New York Super Doctors; New York SuperDoctors--only 5 percent of New York physicians earn this honor; and New York Magazine Best doctors.