William Shrank, MD, MSHS, is an Assistant Professor of Medicine at Harvard Medical School and Director of Rapid Cycle Evaluation at the Center for Medicare and Medicaid Innovation. As Director of Rapid Cycle Evaluation, he leads the evaluation of all payment and health-system delivery reform programs supported by the Innovation Center and all congressionally mandated demonstration programs. In this role, he also promotes continuous quality improvement and rapid spread of effective, scientifically rigorous programs. He was the founder and principal investigator of the CVS Caremark Harvard Partnership for Improving Medication Adherence, a multi-disciplinary research initiative to improve how patients take medication, as well as the Pharmacy Care Research Institute, also funded by CVS Caremark. Shrank serves or has served on national advisory committees for the Food and Drug Administration, Centers for Medicare and Medicaid Services, Department of Health and Human Services, Agency for Healthcare Research and Quality, the Society of General Internal Medicine, the American College of Physicians Foundation, and the U.S Pharmacopeia. Shrank received his undergraduate degree from Brown University, his medical degree from Cornell University, and his master's degree in health policy and management from the University of California, Los Angeles.