In 1971, a Commonwealth Fund fellowship brought Haroutune Armenian, M.D., from the American University of Beirut to Baltimore’s Johns Hopkins School of Hygiene and Public Health, where he earned his doctorate in epidemiology. As part of our yearlong celebration of the 100th anniversary of the Commonwealth Fund, we interviewed Dr. Armenian about his globe-spanning career, during which he set up primary care centers in Bahrain, created a health surveillance and monitoring program in Beirut during Lebanon’s civil war, and assessed the health effects of the 1988 Armenian earthquake.