Mount Sinai St. Luke’s and Mount Sinai Roosevelt are two academic affiliates of the Icahn School of Medicine at Mount Sinai. The combined hospitals are a 1028-bed full-service community and tertiary care hospitals serving New York City’s Midtown West Upper West Side and parts of Harlem.The two hospital components which merged operations in 1979 are nearly 50 blocks apart on Manhattan’s west side: Mount Sinai St.