The Substance Abuse and Mental Health Services Administration is a branch of the U.S. Department of Health and Human Services. SAMHSA is charged with improving the quality and availability of treatment and rehabilitative services in order to reduce illness, death, disability, and the cost to society resulting from substance abuse and mental illnesses. The Administrator of SAMHSA reports directly to the Secretary of the U.S. Department of Health and Human Services. SAMHSA's headquarters building is located outside of Rockville, Maryland.
