He is a Fellow in the American College of Physicians and in the American College of Gastroenterology. Dr. Neufeld is a member of the American Society for Gastrointestinal Endoscopy, the Gerontological Society of America, the Medical Directors Association, and the American Medical Association. He is affiliated with Mount Sinai/Jewish Home and Hospital for the Aged Department of Geriatrics and of The Roosevelt Hospital Department of Medicine.