Skip to main content

Contact Us

For more information about NSDUH or to speak with a project representative, please call 1-800-848-4079 (a toll-free number).

To find additional information on the survey sponsor SAMHSA contact Grace Medley at the address below.

Grace Medley
NSDUH National Study Director
SAMHSA, Center for Behavioral Health Statistics and Quality
5600 Fishers Lane, Room 15E13D
Rockville, MD 20857

To find more information on RTI International and its role in NSDUH contact David Hunter at the address below.

David Hunter
Project Director
RTI International
3040 Cornwallis Road
Research Triangle Park, NC 27709

Answers to frequently asked questions about NSDUH.


National Survey on Drug Use and Health (NSDUH) is the federal government's primary source of national data on the use or non-use of alcohol, tobacco, and illicit substances. The survey also contains questions on mental health, illegal behaviors and other topics associated with substance use.

NSDUH is directed by the Substance Abuse and Mental Health Services Administration (SAMHSA), an agency in the U.S. Department of Health and Human Services (DHHS).

The study is being conducted by RTI International, a nonprofit research organization based in Research Triangle Park, North Carolina. RTI has conducted the study since 1988.