New York-Presbyterian University Hospital of Columbia and Cornell (New York City)

This huge hospital is made up of two institutions: NewYork-Presbyterian Hospital/Columbia University Medical Center and NewYork-Presbyterian Hospital/Weill Cornell Medical Center. It is affiliated with Columbia University College of Physicians and Surgeons and Weill Cornell Medical College. Two of its physician-scientists, Mehmet Oz, MD, and Nicholas Schiff, MD, ranked in Time Magazine’s annual list of the top 100 most influential people in the world.