U.S. Naval Hospital at Subic Bay was opened on 13 July 1956 as U.S. Naval Station Hospital, Subic Bay. In January 1973, the hospital expanded its command scope, adding the dispensaries at Naval Station Subic Bay, Naval Air Station Cubi Point, Naval Communication Transmitting Facility, Capas in Tarlac, and the Joint Military Group Manila. On 7 March 1977, the Hospital was designated as a Regional Medical Center. On 1 August 1983, the Naval Medical Command, Pacific Region, Hawaii became the Subic Bay U.S. Naval Hospital's parent command. In 1989, the U.S. Navy Medical command was reorganized and the hospital began to report directly to the Commander, U.S. Naval Forces, Philippines.