He graduated from Columbia University College of Physicians and Surgeons and served his internship and residency at Bellevue Hospital, where he was chief resident. The Bellevue experience was important in developing his passion for medicine and healing. He was a member of the supporting team that helped with the research in cardiac catheterization that led to the Nobel Prize in medicine for Dr. Dickinson W. Richards, a valued mentor.
John practiced internal medicine in Scarsdale, N.Y., for more than 46 years. When he and his wife, Elisabeth, began to collect political items, he turned to research about the health and lifestyles of U.S. presidents and statesmen. He co-authored the book Presidential Couragewith Wilbur Cross (1980, W.W. Norton & Co.).
John was a talented tennis and squash player, and he took up sailboarding later in life.
John was predeceased by Elisabeth in 1985. He is survived by his second wife of 18 years, Susan; his sons, John and William ’75; their wives, Meredith and Susan; grandchildren Kate, Ellery, Garet, and Zachary; and great-grandchildren Mason and Harper.