Matthew Buettgens, Ph.D., is a mathematician and Senior Fellow in the Urban Institute’s Health Policy Center. He leads the development of the Urban Institute’s Health Insurance Policy Simulation Model. The model has been used to provide technical assistance for health reform implementation in Massachusetts, Missouri, New York, Virginia, and Washington as well as to the federal government. His recent work includes papers analyzing proposals to repeal and replace the Affordable Care Act, both nationally and state-by-state. Topics have included the costs and savings of health reform for both federal and state governments, state-by-state analysis of changes in health insurance coverage and the remaining uninsured, the effect of reform on employers, the role of the individual mandate, the affordability of coverage under health insurance exchanges, and the implications of age rating for the affordability of coverage. Dr. Buettgens received a Ph.D. in mathematics from the State University of New York at Buffalo.