los angeles county department of mental health los angeles county department of mental health the los angeles county department of mental health (lacdmh or dmh), is the largest county mental health department in the united states and provides mental health services for los angeles county residents. dmh directly operates 75 program sites in the county and serves over 250,000 clients annually. dmh's headquarters is located on vermont avenue in koreatown, los angeles, california. department overviewjurisdictionlos angeles countyheadquarterslos angeles, california34.064225°n 118.291431°w﻿ / 34.064225; -118.291431employees4,011 (2010)annual budgetus$1,584,061,000 (2010)department executivelisa h. wong, psy.d., director of mental healthwebsitedmh.lacounty.gov lacdmh logo list of lacdmh directors 1978-1984 dr. john richard "j.r." elpers, psy.d 1984-1992 roberto quiroz, msw 1992-1998 dr. areta crowell, psy.d 1998-2016 dr. marvin southard, dsw 2016-2022 dr. jonathan e. sherin, m.d., ph.d. 2023-present dr. lisa h. wong, psy.d.