Where is mount sinai hospital in new york city? Show map of New York City. Mount Sinai Hospital, founded in 1852, is one of the oldest and largest teaching hospitals in the United States. It is located on the eastern border of Central Park stretching along Fifth Avenue between 98th and 103rd Street in the New York City borough of Manhattan.What is the address for mount sinai hospital? Address of Mount Sinai Medical Center. The address of Mount Sinai Medical Center is 1500 South Fairfield Avenue, Chicago, Illinois 60608, United States.What is a sinai hospital? Founded in 1866 as the Hebrew Hospital and Asylum, Sinai Hospital of Baltimore is a Jewish-sponsored health care organization providing care for all people. It is a nonprofit institution with a mission of providing quality patient care, teaching and research.