Hummy Song, PhD, MPP is an Assistant Professor of Operations, Information and Decisions at The Wharton School at the University of Pennsylvania. Her research focuses on identifying ways to improve the performance of service systems, with a particular emphasis on health care delivery systems. Her work has examined several factors related to patient flow and capacity management in health care delivery settings, including queue configurations, off-service placement, performance feedback, provider turnover, and team staffing. Her research primarily utilizes large datasets derived from electronic health record systems, administrative databases, and surveys of the health care workforce. Professor Song has worked with hospitals and health care delivery organizations both in the U.S. and in developing countries. Professor Song conducted her undergraduate, master’s, and PhD studies at Harvard University.