# Centers for Medicare and Medicaid Services **Canonical:** https://apis.io/providers/cms/ **Website:** https://www.cms.gov/ **APIs profiled:** 26 The Centers for Medicare and Medicaid Services (CMS) provides a suite of public REST APIs enabling developers to access Medicare provider data, quality measures, drug spending, health plan finder, beneficiary claims, and public health insurance datasets. CMS APIs support interoperability standards including HL7 FHIR and OAuth 2.0 to power healthcare applications across the US health system. ## Kin Score — 85.7 / 100 (exemplar) Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 85.7). | Facet | Score | |---|---| | Discoverability | 83.3 | | Contract Quality | 62.3 | | Governance | 55.3 | | Contract Governance | 55.3 | | Operational Transparency | 84.2 | | Developer Ergonomics | 82.7 | | Commercial Clarity | 89.5 | | Access Clarity | 89.5 | Regulatory layer — **Health**: 83.8 (matched via tags). ## Agent readiness — 42.9 (agent-ready) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | derived | | Reversibility Documented | no | | MCP Server | no | | Auth Clarity | yes | | Idempotency | no | | Error Semantics | verified | | OpenAPI Examples | partial | | Rate Limit Signal | verified | | Event Surface Described | no | | Agent Skills | derived | | Well Known Catalog | no | | Consent Identity | no | | Agent Card | no | | Dry Run Mode | no | ## Access Free · Open access — onboarding: open, pricing: free, trial: no (confidence: high). ## APIs (26) - **CMS Beneficiary Claims Data API (BCDA)** — Enables Medicare Accountable Care Organizations (ACOs) and alternative payment model participants to retrieve Medicare Part A, B, and D claims data for their attributed enrollee... - **CMS AB2D API (Claims Data to Part D Sponsors)** — Enables stand-alone Medicare Part D Prescription Drug Plan sponsors to retrieve bulk Medicare Part A and B claims data for their active beneficiaries using the FHIR standard in ... - **CMS Data at the Point of Care (DPC) API** — Provides Original Medicare claims data to fee-for-service Medicare providers in a structured, standardized FHIR format at the point of care. Helps providers gain complete views ... - **CMS Finder API** — The API behind Finder.Healthcare.gov that helps users find private health plans available outside the Health Insurance Marketplace. Supports individual plan lookups, small group... - **CMS Quality Payment Program (QPP) Submissions API** — Enables QPP participants to submit quality performance data and receive real-time performance scoring feedback. Supports Merit-based Incentive Payment System (MIPS) and Advanced... - **Centers for Medicare and Medicaid Services API Reference API** — Information about the state of Marketplace API. - **Centers for Medicare and Medicaid Services Bulk Data API** — Information about the bulk data json files maintained by Marketplace API. - **Centers for Medicare and Medicaid Services Code Search API** — Search CPT/HCPCS codes by procedure codes or terms describing medical procedures. Get code details for a given procedure code. - **Centers for Medicare and Medicaid Services Cost Search API** — For a given procedure code or entire set of codes, get national averages for the amount Medicare pays hospitals or surgical centers, and the national average copay amounts. - **Centers for Medicare and Medicaid Services Enrollments API** — Enrollment grouping validation and information. - **Centers for Medicare and Medicaid Services Geography API** — Geographic data, including information on states, counties, and zipcodes. - **Centers for Medicare and Medicaid Services Households & Eligibility API** — Household specific calculations, including eligibility information, out of pocket costs, poverty levels, and cost benchmarks. - **Centers for Medicare and Medicaid Services Insurance Issuers API** — Data related to health insurance issuers on the marketplace. - **Centers for Medicare and Medicaid Services Insurance Plans API** — Data on both health and dental insurance plans. - **Centers for Medicare and Medicaid Services Plans API** — The Plans API from Centers for Medicare and Medicaid Services — 1 operation(s) for plans. - **Centers for Medicare and Medicaid Services Provider & Drug Coverage API** — Lookup information on providers, drugs, and what is covered under what plans. - **CMS Socrata Open Data API (data.cms.gov)** — data.cms.gov hosts hundreds of CMS datasets including Medicare Fee-for-Service utilization and payment data, Provider of Services files, Medicare Part B/D Prescriber summaries, ... - **CMS Provider Data Catalog API (Care Compare)** — The Provider Data Catalog API (formerly Hospital Compare) exposes the Medicare.gov Care Compare datasets including Hospital, Nursing Home, Home Health, Hospice, Physician, Long-... - **NPPES NPI Registry API** — The NPPES NPI Registry API provides free public access to look up active National Provider Identifier records for individual and organizational healthcare providers, supporting ... - **Healthcare.gov Marketplace API** — The Healthcare.gov Marketplace API and accompanying Open Data Plan Finder exposes Qualified Health Plan (QHP) details, plan attributes, provider networks, and formularies for th... - **CMS Quality Payment Program (QPP) Measures API** — The Quality Payment Program Measures Data repository and REST API publish machine-readable specifications of MIPS quality, promoting interoperability, improvement activities, an... - **Medicare Coverage Database (MCD) API** — The Medicare Coverage Database publishes National Coverage Determinations (NCDs), Local Coverage Determinations (LCDs), articles, and coding guidance used to determine Medicare ... - **Centers for Medicare and Medicaid Services Capability API** — FHIR server capability statements and metadata. - **Centers for Medicare and Medicaid Services Coverage API** — Beneficiary coverage records. - **Centers for Medicare and Medicaid Services ExplanationOfBenefit API** — Medicare claims expressed as ExplanationOfBenefit resources. - **Centers for Medicare and Medicaid Services Patient API** — Beneficiary (Patient) resources. ## MCP servers (1) - **Centers for Medicare and Medicaid Services MCP Server** ## Agentic access (1) - **Cms Agentic Access** — 94 operations · 21 acting · 1 human-in-the-loop ## Security (4) - **Cms Authentication** — apiKey/http (bearer)/http (basic)/oauth2 · 9 schemes - **Cms Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC - **Cms Vulnerability Disclosure** — disclosure policy published - **Cms Trust Center** — trust center published ## Plans (2) - **Cms Plans Pricing** - **Plans** ## Tags Medicare, Medicaid, Healthcare, Health Insurance, FHIR, Federal-Government, Drug Spending, Provider Data, Quality Measures, Claims Data --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/cms/). Scores are computed from the provider's own public artifacts under a published rubric.