Dr. Sabrina L. Smiley is a tenured Associate Professor of Public Health in the Division of Health Promotion and Behavioral Science. She is a social and behavioral health scientist whose research focuses on the intersection of substance use, HIV, race, and policy and examines the role of psychosocial factors, social and structural determinants of health in shaping racial/ethnic health inequities. Her research is grounded in interdisciplinary frameworks, community engagement, and employs various methodological techniques including qualitative data analysis, multilevel modeling, and ecological momentary assessment. Her empirical work has informed nicotine and commercial tobacco policies and laws prioritizing health equity and racial justice. Dr. Smiley has published in leading academic journals including Tobacco Control, the American Journal of Public Health, and Current HIV/AIDS Reports. She serves as Principal Investigator and Co-Investigator on multiple research projects funded from the National Institutes of Health, the California Tobacco-Related Disease Research Program, and the California HIV/AIDS Research Program.