Mark McClellan, MD, PhD, is the Robert J. Margolis professor of business, medicine, and policy, and director of the Duke-Margolis Center for Health Policy at Duke University with offices at Duke and in Washington DC. In his roles of a doctor and an economist, his work has addressed a wide range of strategies and policy reforms to improve health care. Before coming to Duke, he served as a senior fellow in Economic Studies at the Brookings Institution, where he was director of the Health Care Innovation and Value Initiatives and led the Richard Merkin Initiative on Payment Reform and Clinical Leadership. He also has a highly distinguished record in public service and in academic research. Dr. McClellan is a former administrator of the Centers for Medicare & Medicaid Services (CMS) and former commissioner of the U.S. Food and Drug Administration (FDA), where he developed and implemented major reforms in health policy such as Medicare and Medicaid payment reforms, the FDA’s Critical Path Initiative, and public-private initiatives to develop better information on the quality and cost of care. He is the founding chair and a current board member of the Reagan-Udall Foundation for the FDA, is a member of the National Academy of Medicine and chairs the Academy’s Leadership Council for Value and Science-Driven Health care, co-chairs the guiding committee of the Health Care Payment Learning and Action Network, and is a research associate at the National Bureau of Economic Research. He has also previously served as a member of the President’s Council of Economic Advisers and senior director for health care policy at the White House, and as Deputy Assistant Secretary for Economic Policy at the Department of the Treasury. As a previous associate professor of economics and medicine with tenure at Stanford University, he has twice received the Kenneth Arrow Award for Outstanding Research in Health Economics.