The Centers for Medicare and Medicaid Services (CMS) is the federal agency that provides health coverage to more than 160 million Americans through Medicare, Medicaid, the Children's Health Insurance Program (CHIP), and the Health Insurance Marketplace. CMS operates one of the largest public API programs in the U.S.
cms marketplace open-data interoperability healthcare fhir medicaid federal-government socrata medicare bcda dpc claims apis-json blue-button naftiko provider-data
-
Updated
May 11, 2026