A renowned cardiologist and the former president of the American Heart Association, Fuster heads up Mount Sinai Heart and serves as a professor of medicine at the Mount Sinai School of Medicine.

A native of Spain, Fuster emigrated to the U.S. in the '70s to complete his residency at Minnesota's Mayo Clinic. In 1981, he joined Mount Sinai as head of the cardiology department, leaving in 1991 to teach at Harvard Medical School and serve as chief of cardiology at Massachusetts General Hospital. Fuster returned to Mount Sinai in 1994 to serve as director of the Zena and Michael A. Wiener Cardiovascular Institute. Today he presides over one of the city's most prominent heart programs. The author of more than 400 articles and the editor of a handful of major medical textbooks, including The Heart and Atherothrombosis and Coronary Artery Disease, Fuster has seen patients such as Rudy Giuliani. (It was Fuster who issued Giuliani's clean bill-of-health during his ill-fated bid for the presidency.) But he spends just as much of his time overseeing the prestigious center, luring star doctors to the fold, and glad-handing potential donors. [Image via Getty]