Daniel Polsky is the 40th Bloomberg Distinguished Professor of Health Economics at Johns Hopkins University. He holds primary appointments in both the Johns Hopkins Bloomberg School of Public Health and the Carey Business School and secondary appointments in both the School of Nursing and the Department of Psychiatry and Behavioral Sciences, School of Medicine. From 1996-2016 he was on the faculty at the University of Pennsylvania, where he was the Robert D. Eilers Professor the Wharton School and the Perelman School of Medicine. From 2012-2016 he served as executive director of the Leonard Davis Institute for Health Economics, the nation's first academic research institution focused on interdisciplinary solutions to health care delivery and policy, leading 300 senior fellows and their $110 million research portfolio to address health care system challenges of affordability, access, value, and equity. Dr. Polsky a national leader in the field of health policy and economics, has dedicated his career to exploring how health care is organized, managed, financed, and delivered—especially for low-income people. His own research has advanced our understanding of the cost and quality tradeoff of interventions whether they are changes to large federal programs or local programs. His most recent work focuses on how to provide access to quality health care in low-resource settings with a particular interest in narrow provider networks. He is a member of the National Academy of Medicine. He serves on the Health and Medicine Committee and on the Board on Population Health and Public Health Practice for the National Academies of Sciences, Engineering, and Medicine. He serves on the Congressional Budget Office’s Panel of Health Advisers and was the senior economist on health issues at the President’s Council of Economic Advisers. He is an associate editor of the journal Health Economics and serves on the editorial boards of several other journals including Health Services Research and Medical Care Research and Review. He co-authored Economic Evaluation in Clinical Trials, published by Oxford University Press. He received a Master of Public Policy degree from the University of Michigan in 1989 and a Ph.D. in economics from the University of Pennsylvania in 1996.