About NYC Health and Hospitals/Harlem. Harlem Hospital Center has been a bedrock of the Harlem community since 1887. The hospital provides a wide range of medical, surgical, diagnostic, therapeutic and family support services to the residents of Central Harlem, West Harlem, Washington Heights and Inwood. Harlem is the largest hospital in the area, capable of treating the most seriously ill. Harlem provides over 90 specialized ambulatory care serv...