Dr. Hsia is Professor of Emergency Medicine and Health Policy; Vice Chair of Health Services Research in the Department of Emergency Medicine; and a member of the Philip R. Lee Institute for Health Policy Studies at the University of California, San Francisco. She is the founder and director of the UCSF Policy Lab of Acute Care and Emergencies and attends at the San Francisco General Hospital and Trauma Center. Dr. Hsia’s work using cutting-edge analytical tools at the intersection of economics, health policy, and clinical investigation has elucidated how market-driven imbalances in the supply and demand of emergency care produce preventable mortality and exacerbate underlying inequities. She investigates issues relating to access to emergency departments and trauma centers; the distribution of emergency care across income areas; factors associated with closure of emergency services; how these closures affect patient outcomes, specifically those with acute myocardial infarction, stroke, asthma/COPD, sepsis, and trauma; and the variation of costs and charges in the health care system.