Addiction A-Z

Drug and alcohol services information system

The Drug and Alcohol Services Information System (DASIS) is the primary source of national data on substance abuse treatment. DASIS is conducted by the Office of Applied Studies (OAS) and the Substance Abuse and Mental Health Services Administration (SAMHSA). SAMHSA, an agency of the U.S. Department of Health and Human Services (HHS), is the federal government’s lead agency for improving availability and quality of substance abuse prevention, addiction treatment and mental health services in the U.S.

DASIS has three components: Inventory of Substance Abuse Treatment Services (I-SATS), a listing of all known public and private facilities for substance abuse treatment in the U.S. and its territories; the National Survey of Substance Abuse Treatment Services (N-SSATS), an annual survey of all the facilities in the I-SATS. Information from this survey is used to compile and update the National Directory of Drug and Alcohol Abuse Treatment Programs as well as the SAMHSA Substance Abuse Treatment Facility Locator available online; Treatment Episode Data Set (TEDS), data compiled on the characteristics and demographics of admissions for treatment of substance abuse.


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