Zakaria Zayour, M.D., is an assistant professor in the Department of Psychiatry at UT Southwestern Medical Center. His focus is on the treatment of substance use disorders. Dr. Zayour earned his medical degree from the American University of Beirut, Lebanon. He then completed his psychiatry residency followed by addiction fellowship at UT Southwestern. He is certified by the American Board of Psychiatry and Neurology in both general psychiatry as well as addiction psychiatry. Dr. Zayour’s clinical interests include evaluation and treatment of PTSD and medication assisted treatment of opioid and alcohol use disorders. He is involved in research on medication assisted treatment of opioid use disorder at the Dallas VA Medical Center.