Lawrence Casalino, MD, PhD, is the Livingston Farrand Professor of Public Health and Chief of the Division of Health Policy and Economics in the Weill Cornell Medical School Department of Population Health Sciences. His research focuses on the intended and unintended effects of public and private policies on the types of provider organization that exist, on the processes they use to provide care, and on the quality and cost of care. His work also focuses on the impact of policies and organizational processes on socioeconomic and racial/ethnic disparities. Dr. Casalino currently serves as a Medicare Payment and Advisory Commission (MedPAC) Commissioner and as a member of the Panel of Health Advisors for the Congressional Budget Office, and has served as a senior advisor to the Director of the US Agency for Healthcare Research and Quality (AHRQ), as the Chair of the AcademyHealth Annual Research Meeting, on the National Advisory Committee for the Robert Wood Johnson Investigators in Health Policy Research Program, and on many other national committees, technical advisory panels and nonprofit boards of directors. Dr. Casalino worked full-time as a primary care physician for 20 years.