David Mee-Lee, MD, is Senior Vice President for The Change Companies®. He is a board-certified psychiatrist, and is certified by the American Board of Addiction Medicine (ABAM). He trains and consults both nationally and internationally. Dr. Mee-Lee has been the Chief Editor of all editions of ASAM’s Criteria, including The ASAM Criteria: Treatment Criteria for Addictive, Substance-Related, and Co-Occurring Conditions, Third Edition (2013). Dr. Mee-Lee has over 30 years’ experience in person-centered treatment and program development for people with co-occurring mental health and substance use conditions. He is also a Senior Fellow, Justice Programs Office of the School of Public Affairs at American University, Washington, DC. Dr. Mee-Lee earned his medical degree from the University of Queensland, Australia, in 1972. He earned an MS in Psychiatry from Ohio State University in 1976.