Dr. David L. Duffy, MD, graduated from Harvard Medical School in 1971.  He trained in Internal Medicine and Ambulatory Care at Montefiore Medical Center, Bronx, NY, from 1971-1975.  He continued seeing patients and supervising interns and residents at the Montefiore Hospital Medical Center until 1980.  From 1981-1988 he had a private medical practice in Oceanside, California.  He returned to New York in 1988 to become Medical Director of the Metropolitan Health Plan HMO at Metropolitan Hospital in Manhattan.  From 1996 to 2005 he served as Section Chief of General Internal Medicine.  He also served as Chairman of the Patient Education Committee from 1999 to 2005.