Centers for Medicare and Medicaid Services

The Centers for Medicare and Medicaid Services (CMS) charges fees to external researchers for access to its data, with revenues collected into a user fee fund.

A 2025 Department of Health and Human Services contingency plan estimated that 47% of Centers for Medicare and Medicaid Services (CMS) staff would be furloughed if government funding lapsed on October 1, 2025.

Centers for Medicare and Medicaid Services Administrator Dr. Mehmet Oz stated in 2025 that about 12 million ACA enrollees filed no claims in 2024.