Zirui Song, MD, PhD is a resident at Massachusetts General Hospital. He graduated from Harvard Medical School magna cum laude and from the Ph.D. Program in Health Policy (Economics track) at Harvard University. His research has focused on health care spending and quality under global payment, impact of Medicare fee changes on physician behavior, and effect of federal benchmark changes on insurer behavior in the Medicare Advantage program. He is a recipient of the AcademyHealth Article-of-the-Year award and a member of the Forbes 30 Under 30 for Science and Healthcare. Before residency, he served on the Massachusetts Medical Society Task Force on Health Care Reform and was a pre- and post-doctoral Fellow in Aging and Health Economics at the National Bureau of Economic Research. He received his B.A. in Public Health Studies with honors from Johns Hopkins University.