Mark B. McClellan, MD, PhD, serves as Co-chair of the Health Care Payment Learning & Action Network’s Guiding Committee. He is the Director of the Robert J Margolis Center for Health Policy and a Robert Margolis Professor of Business, Medicine, and Health Policy at Duke University. Previously, he was a senior fellow and Director of the Health Care Innovation and Value Initiative at the Engelberg Center for Health Care Reform at The Brookings Institution. His work focuses on strategies and policy reforms to improve health care, including accountable care, better evidence from real-world practice, and more effective drug and device innovation. Dr. McClellan also served as Commissioner of the United States Food and Drug Administration (FDA) from 2002 through 2004, where he developed and implemented major reforms in health policy, and subsequently as an administrator of the Centers for Medicare and Medicaid Services (CMS) from 2004 through 2006. During 2001 and 2002, Dr. McClellan served on the President’s Council of Economic Advisers where he advised on domestic economic issues. He also served as a senior policy director for health care and related economic issues for the White House. From 1998-1999, McClellan served as Deputy Assistant Secretary of the Treasury for Economic Policy where he supervised economic analysis and policy development on a wide range of domestic policy issues. In 1997, the Journal of Economics and Management Strategy published his paper, Hospital Reimbursement Incentives: An Empirical Analysis, which served as a review and analysis of provider payment incentives resulting from the Medicare prospective payment system. After graduating from the University of Texas, he earned his MD degree from the Harvard-MIT Division of Health Sciences and Technology and his PhD in economics from MIT. He also earned a Master of Public Administration degree from the Harvard University Kennedy School of Government. Dr. McClellan completed his residency training in internal medicine at Brigham and Women’s Hospital, and he is board-certified in internal medicine.