The Icahn School of Medicine at Mount Sinai (ISMMS), formerly the Mount Sinai School of Medicine (MSSM), is an American medical school in the New York City borough of Manhattan in the state of New York. Chartered by Mount Sinai Hospital in 1963, the ISMMS is one of the foremost medical schools in the United States, ranking 20th in research according to U.S. News & World Report, 18th in NIH funding among U.S Medical Schools (2014), and 3rd in NIH funding per primary investigator.