A. Thomas McLellan

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A. Thomas McLellan
Deputy Director of the Office of National Drug Control Policy
In office
PresidentBarack Obama
Succeeded byMichael Botticelli
Personal details
Born (1949-05-29) May 29, 1949 (age 69)
Staten Island, New York
Alma materColgate University (B.A.), Bryn Mawr College (M.S., Ph.D.)

A. Thomas McLellan (born May 29, 1949, in Staten Island, New York)[1] is the founder and Chairman of the Board of Directors at the Treatment Research Institute, a not-for-profit research and development institute in Philadelphia. He served as Deputy Director of the Office of National Drug Control Policy from 2009 to 2012.

McLellan received his B.A. from Colgate University and his M.S. and Ph.D. from Bryn Mawr College. He received postgraduate training in psychology at Oxford University. He has since worked for the Veterans Administration Medical Center in Philadelphia and the University of Pennsylvania.

McLellan was the principal developer of the Addiction Severity Index (ASI) and the Treatment Services Review (TSR), widely used substance abuse instruments. He has served as an adviser to many government and nonprofit scientific organizations, including the Office of National Drug Control Policy, the National Practice Laboratory of the American Psychiatric Association, the Swiss National Science Foundation, the World Health Organization, the Greek government and Public Health England.

McLellan served as the Deputy Director of the Office of National Drug Control Policy under the Obama administration.[2]

Among McLellan’s many honors and awards are the Life Achievement Award of the American Society of Addiction Medicine in 2003 and the 2002 award for Distinguished Contribution in Addiction Medicine from the Swedish Medical Association. He has served as Editor-in-Chief of the Journal of Substance Abuse Treatment.[3]


  1. ^ [1] Archived April 13, 2009, at the Wayback Machine.
  2. ^ "Obama Administration Names A. Thomas McLellan Deputy ONDCP Director" (PDF) (Press release). 2010-04-10. Retrieved 2010-08-09.[permanent dead link]
  3. ^ Imhof, John E.; Hirsch, Robert (2001). "Editorial: The Torch is Passed". Journal of Substance Abuse Treatment. 20 (1): 1–2. doi:10.1016/S0740-5472(00)00173-2.

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