Joseph Chin, MD, MS, is the Deputy Director of the Coverage and Analysis Group (CAG) in the Center for Clinical Standards and Quality at the Centers for Medicare and Medicaid Services (CMS). He joined CMS in 1992 as a medical officer in the quality improvement component and transitioned to CAG in 1999, focusing on systematic evidence reviews, Medicare translational science and preventive services. Prior to joining CMS, Dr. Chin practiced full time in occupational and ambulatory medicine. He is board certified in preventive medicine, completed his MD, MS in epidemiology and residency at the University of Maryland School of Medicine, and maintains an active primary care practice in Maryland.