Some states have not adopted the Affordable Care Act (ACA) Medicaid expansions due to concerns that the expansions may impair access to care and utilization for those who are already insured. We investigate such negative spillovers using a large panel of Medicare beneficiaries. Across many subgroups and outcomes, we find no evidence that the expansions reduced utilization among Medicare beneficiaries and can rule out all but very small changes in utilization or spending. These results indicate that the expansions in Medicaid did not impair access to care or utilization for the Medicare population.
Carey, Colleen M., Sarah Miller, and Laura R. Wherry.
"The Impact of Insurance Expansions on the Already Insured: The Affordable Care Act and Medicare."
American Economic Journal: Applied Economics,
Insurance; Insurance Companies; Actuarial Studies
National Government Expenditures and Health
Health Insurance, Public and Private
Health: Government Policy; Regulation; Public Health
Welfare, Well-Being, and Poverty: Government Programs; Provision and Effects of Welfare Programs