In February 1969 following the Watts Riots, the County of Los Angeles appointed Carey Jenkins, JGM Founder, to prepare a Master Plan for the development of the acute unit, intern and resident physicians dormitory , community mental health center, Drew Post Graduate Medical School, Clinical Sciences Unit, administrative medical arts and child care facilities.
Twenty years later, JGM lead the effort to renovate the hospital completed in 1972 as an outgrowth of Carey Jenkins master planning efforts. In 1988 a renovation and addition was undertaken which enlarged the facility from its original 394 beds to 760 beds. The addition provided more beds for the acute care unit as well as an exceptionally large out-patient unit.