Treatment Research Institute


collaborationAbout Us

Founded by the same researchers who developed the Addiction Severity Index, the Treatment Research Institute is an independent, nonprofit research and development organization dedicated to science-driven reform of treatment and policy in substance use.

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Featured Topic

September is National Recovery Month

TRI joins SAMHSA in celebrating 25 years of recognizing the possibilities of recovery from addiction. We applaud the millions of Americans who are living in recovery from addiction – and the millions more who support recovery in so many ways.  Recovery is possible.  It is all around us.

National Recovery Month promotes the societal benefits of prevention, treatment and recovery for mental and substance use disorders, celebrates people in recovery, lauds the contributions of treatment and service providers, and promotes the message that recovery  is possible.

Find resources, events and stories of recovery through the SAMHSA website.

TRI strives to create research-based solutions to the multifaceted problems of substance abuse. Learn more about our approach to support individuals in recovery and impact broad systemic change.

News Headlines

David R. Gastfriend named CEO of the Treatment Research Institute; founder and current CEO, A. Thomas McLellan, becomes Chair of the Board

Philadelphia, PA (Aug. 14, 2014) – Treatment Research Institute (TRI) today announced that its Board of Directors has appointed David R. Gastfriend, M.D. as Chief Executive Officer effective September 1, 2014. Dr. Gastfriend previously held the position of Vice President for Scientific Communications at Alkermes, Inc. Concurrently, A. Thomas McLellan, Ph.D., founder of the Treatment…
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Treatment Research Institute Partners with Top Addiction Specialists to Teach Substance Use Disorders to Medical Students

Philadelphia, PA (Aug. 7, 2014) – Treatment Research Institute (TRI) has collaborated with the Hazelden Betty Ford Foundation (HBFF), the American Society of Addiction Medicine (ASAM) and MedU to help prepare physicians to address the growing problem of substance use disorders and addiction facing society and the health care system. Medical education has rarely included…
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