Roy Vagelos, M.D., a recipient of the 2016 Double Helix Medal, is retired chairman and CEO of Merck & Co., Inc. He received an A.B. in 1950 from the University of Pennsylvania and an M.D. in 1954 from the College of Physicians and Surgeons. Following a residency at the Massachusetts General Hospital, he joined the National Institutes of Health from 1956 to 1966. In 1966, he became chairman of the Department of Biological Chemistry at Washington University School of Medicine in St. Louis.