Dr. John Leff, MD, a highly skilled endocrinologist specializing in Diabetes and Metabolism, has over 45 years of experience in the healthcare field. He practices in Brooklyn, NY, and is affiliated with esteemed institutions including Maimonides Medical Center and Burke Rehabilitation Hospital. Dr. Leff graduated from the State University of New York Downstate Health Sciences University College of Medicine in 1978 and has completed multiple fellowships in the field....