He graduated from the Albert Einstein College of Medicine and completed eight years of training in surgery and cardiovascular surgery at Beth Israel Hospital, Massachusetts General Hospital, and Boston University Medical Center, all in Boston, Massachusetts. Dr. Nath is presently a senior staff surgeon at Lawrence Memorial Hospital in Medford, Massachusetts and at Winchester Hospital in Winchester, Massachusetts. He is also a member of the active staff and courtesy staff at four other local hospitals. In addition, Dr. Nath is a clinical instructor in Surgery at the Tufts University Medical School and an assistant clinical professor of Surgery at Boston University Medical Center, both in Boston.