Substance Abuse and Mental Health Services Administration

The Substance Abuse and Mental Health Services Administration (SAMHSA) is a branch of the U.S. Department of Health and Human Services. It is charged with improving the quality and availability of prevention, treatment, and rehabilitative services in order to reduce illness, death, disability, and 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 in Rockville, Maryland.