The Payne Whitney Psychiatric Clinic (PWC) was a hospital in the Upper East Side of Manhattan, New York City, which was founded by an endowment bestowed by Payne Whitney (March 20, 1876 – May 25, 1927) upon his death. Whitney was an American businessman and member of the influential Whitney family. An eight-story free-standing hospital was constructed, and was affiliated with Cornell University's medical school, now called Weill Cornell Medicine, and with New York Hospital, now New York–Presbyterian Hospital (NYP), before its opening.