Who We Are

The Tennessee Department of Mental Health & Substance Abuse Services is the state’s mental health and substance abuse authority. The department is responsible for planning, setting policy and quality standards, system monitoring and evaluation, and advocating for persons of all ages who have mental illness, serious emotional disturbance, or substance abuse disorders. TDMHSAS annually assesses the public's needs for mental health, substance abuse, and recovery service supports.


  • Mission & Vision

    Our vision is to be one of the nation’s most innovative and proactive state behavioral health authorities for Tennesseans dealing with mental health and substance abuse problems.

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  • Department Offices

    The Office of the Commissioner, made up of the Commissioner, Deputy Commissioner and assistance from Executive Administrative staff, oversee and lead the department in its mission.

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  • Contact Us

    The Department's main number and mailing address as well as contact information, including staff names, phone numbers, and email addresses.

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  • Commissioner's Office

    Our Department is the State’s public mental health and substance abuse authority. Our vision is to be one of the nation’s most innovative and proactive service providers for Tennesseans dealing with mental health and/or substance abuse problems.

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  • Fast Facts

    Fast Facts provides a quick overview of key statistics about mental health and substance abuse in Tennessee as well as budget and service information for the Tennessee Department of Mental Health and Substance Abuse Services.

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  • History of the Department

    A history of the Department of Mental Health and Substance Abuse Services and a timeline of milestones of mental health services in the state of Tennessee.

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