Dr. Roger Sorensen is Chief of the Integrative Neuroscience Branch, Division of Neuroscience and Behavior, at the National Institute on Drug Abuse (NIDA). The Integrative Neuroscience Branch provides management and direction of a basic and preclinical biomedical research grant portfolio that seeks to identify the molecular, cellular and physiological actions of psychoactive drugs on the function and structure of the brain and nervous system, especially those actions that contribute to the behavioral changes leading to substance abuse and addiction. Dr. Sorensen also manages the Pathways to Independence Award [K99/R00] program in basic research for NIDA. Dr. Sorensen received a B.S. in Chemistry from the University of Maryland, College Park, a Ph.D. in Biochemistry from Indiana University, Bloomington, and a M.P.A. in Healthcare Management and Policy from Rutgers University-Camden, NJ. Dr. Sorensen joined the NIH in 2000, and has been at NIDA since 2007.