Winthrop-University Hospital was founded in 1896 under the name Nassau Hospital as Long Island, New York's first voluntary hospital. The location was originally constructed in 1900. It was renamed Winthrop-University Hospital in the 1980s to avoid confusion with Nassau County Medical Center, now Nassau University Medical Center (NUMC), in East Meadow. Winthrop University Hospital is a teaching hospital for SUNY Stony Brook and is also a member of the New York Presbyterian Hospital System.