Hoangmai Pham, MD, MPH, serves as a member of the Health Care Payment Learning & Action Network’s Population-Based Payment Work Group. She is a general internist and Director of the Seamless Care Models Group at the Center for Medicare & Medicaid Innovation at the Centers for Medicare & Medicaid Services, where she is responsible for overseeing portfolios of demonstrations on accountable care organizations (ACOs) and advanced primary care. The Seamless Care Models Group sponsors the Pioneer ACO Model, the Advance Payment Model, the Comprehensive Primary Care Initiative, and the Comprehensive ESRD Care Initiative, and continues to develop new models. She has published extensively on care fragmentation and coordination, provider market trends, health disparities, primary care, and quality measurement and improvement, and the intersection of each of these with provider payment policy. Dr. Pham also contributed to the design of Medicare demonstrations and programs, including the Physician Quality Reporting System and Resource Use Reports. She practiced for many years at safety net clinics in the Washington DC area. Dr. Pham received her AB degree from Harvard, her MD degree from Temple University, and her MPH degree from Johns Hopkins, where she was also a Robert Wood Johnson Clinical Scholar.