John A. Graves, Ph.D. is Professor at Vanderbilt University School of Medicine, where he holds appointments in the Department of Preventive Medicine and the Department of Medicine. He is also an affiliate of the Institute of Medicine and Public Health and the Center for Health Services Research, both at Vanderbilt University Medical Center.

Graves' research spans the intersection of health policy, health economics, statistics and health services research. His primary research focus is on the development, implementation and evaluation of health care reforms at the state and federal level. In addition, his current research portfolio also includes projects on insurance dynamics, microsimulation methods for state and federal budgeting, and on estimating the returns to medical spending in the United States.