John J. Mariani, MD is an Associate Professor of Clinical Psychiatry at the Columbia University Vagelos College of Physicians and Surgeons and a Research Psychiatrist at the New York State Psychiatric Institute (NYSPI). Dr. Mariani is the Director of the Substance Treatment and Research Service (STARS) in the Division on Substance Use Disorders at the NYSPI/Columbia University Irving Medical Center. Dr. Mariani attended the New York University School of Medicine, completed a psychiatry residency at the Beth Israel Medical Center/Albert Einstein College of Medicine, and an addiction psychiatry clinical and research fellowship at Columbia University Medical Center and the New York State Psychiatric Institute. He serves on the board of the American Academy of Addiction Psychiatry and is the medical advisor to the Major League Baseball Players Association. Dr. Mariani’s research is focused on the development of novel medication treatments for substance use disorders and related co-occurring psychiatric disorders. He has received grant funding from the National Institute on Drug Abuse (NIDA), the National Institute on Alcohol Abuse and Alcoholism (NIAAA), as well as private foundations. Dr. Mariani has over 50 peer-reviewed scientific publications, in addition to a dozen book chapters on the treatment of substance use disorders.