A. Thomas McLellan, Ph.D. is the founder and board chair of the Treatment Research Institute (TRI), board member of Indivior, and an experienced substance abuse researcher.

From 2009 to 2010, he was Science Advisor and Deputy Director of the White House Office of National Drug Control Policy (ONDCP), a congressionally confirmed Presidential appointment to help shape the nation’s public policy approach to illicit drug use. At ONDCP, Dr. McLellan worked on a broad range of drug issues, including formulation and implementation of the President’s National Drug Control Strategy and promotion of drug treatment through the broader revamping of the national health care system.

Dr. McLellan has more than 35 years of experience in addiction treatment research. Dr. McLellan works to transform the way research is employed in the treatment of and policy making around substance use and abuse.