CMS — Centers for Medicare & Medicaid Services
The Centers for Medicare & Medicaid Services (CMS) is the U.S. federal agency within the Department of Health and Human Services that administers Medicare, Medicaid, the Children's Health Insurance Program (CHIP), the Health Insurance Marketplace, and the broader CMS open-data program. CMS operates one of the largest collections of HL7 FHIR APIs in the U.S. federal government — Blue Button 2.0, BCDA, AB2D, DPC, and the upstream BFD server — alongside the Marketplace API, the data.cms.gov open-data catalog, the Provider Data Catalog, the Quality Payment Program API, and the Medicare Coverage Database.
CMS — Centers for Medicare & Medicaid Services publishes 62 APIs on the APIs.io network, including Articles API, Auth API, Benchmarks API, and 59 more. Tagged areas include Healthcare, Medicare, Medicaid, FHIR, and Bulk Data.
The CMS — Centers for Medicare & Medicaid Services catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.
CMS — Centers for Medicare & Medicaid Services’ developer surface includes authentication, developer portal, support, sandbox, engineering blog, privacy policy, documentation, and 28 more developer resources.
What this lets a business do 3
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
APIs 62
Individual APIs this provider publishes, each with its own machine-readable definition.
CMS — Centers for Medicare & Medicaid Services Articles API
The Articles API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for articles.
CMS — Centers for Medicare & Medicaid Services Auth API
The Auth API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for auth.
CMS — Centers for Medicare & Medicaid Services Benchmarks API
The Benchmarks API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for benchmarks.
CMS — Centers for Medicare & Medicaid Services Bulk Export API
The Bulk Export API from CMS — Centers for Medicare & Medicaid Services — 10 operation(s) for bulk export.
CMS — Centers for Medicare & Medicaid Services Catalog API
The Catalog API from CMS — Centers for Medicare & Medicaid Services — 4 operation(s) for catalog.
CMS — Centers for Medicare & Medicaid Services Coverage API
The Coverage API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for coverage.
CMS — Centers for Medicare & Medicaid Services Data API
The Data API from CMS — Centers for Medicare & Medicaid Services — 4 operation(s) for data.
CMS — Centers for Medicare & Medicaid Services Drugs API
The Drugs API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for drugs.
CMS — Centers for Medicare & Medicaid Services Eligibility API
The Eligibility API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for eligibility.
CMS — Centers for Medicare & Medicaid Services ExplanationOfBenefit API
The ExplanationOfBenefit API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for explanationofbenefit.
CMS — Centers for Medicare & Medicaid Services Geography API
The Geography API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for geography.
CMS — Centers for Medicare & Medicaid Services Group API
The Group API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for group.
CMS — Centers for Medicare & Medicaid Services Issuers API
The Issuers API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for issuers.
CMS — Centers for Medicare & Medicaid Services LCD API
The LCD API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for lcd.
CMS — Centers for Medicare & Medicaid Services Measurements API
The Measurements API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for measurements.
CMS — Centers for Medicare & Medicaid Services MEDCAC API
The MEDCAC API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for medcac.
CMS — Centers for Medicare & Medicaid Services Metadata API
The Metadata API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for metadata.
CMS — Centers for Medicare & Medicaid Services NCD API
The NCD API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for ncd.
CMS — Centers for Medicare & Medicaid Services Organization API
The Organization API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for organization.
CMS — Centers for Medicare & Medicaid Services Patient API
The Patient API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for patient.
CMS — Centers for Medicare & Medicaid Services Plans API
The Plans API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for plans.
CMS — Centers for Medicare & Medicaid Services Practitioner API
The Practitioner API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for practitioner.
CMS — Centers for Medicare & Medicaid Services Providers API
The Providers API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for providers.
CMS — Centers for Medicare & Medicaid Services Scoring API
The Scoring API from CMS — Centers for Medicare & Medicaid Services — 1 operation(s) for scoring.
CMS — Centers for Medicare & Medicaid Services Submissions API
The Submissions API from CMS — Centers for Medicare & Medicaid Services — 2 operation(s) for submissions.
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 1. Export API
API through which an authenticated and authorized PDP sponsor may request a bulk-data export from a server.
Centers for Medicare and Medicaid Services 2. Status API
API to determine the status of the job, the files to download once the job is complete and an endpoint to cancel a job
Centers for Medicare and Medicaid Services 3. Download API
After creating a job, the API to download the generated bulk download files
Centers for Medicare and Medicaid Services 4. Capabilities API
Provide the standard required FHIR capability statement
Centers for Medicare and Medicaid Services Admin API
The admin-api API from Centers for Medicare and Medicaid Services — 5 operation(s) for admin-api.
Centers for Medicare and Medicaid Services Attribution API
The attribution API from Centers for Medicare and Medicaid Services — 2 operation(s) for attribution.
Centers for Medicare and Medicaid Services Auth API
The auth API from Centers for Medicare and Medicaid Services — 3 operation(s) for auth.
Centers for Medicare and Medicaid Services Capabilities API
Provide the standard required FHIR capability statement
Centers for Medicare and Medicaid Services Data API
The data API from Centers for Medicare and Medicaid Services — 1 operation(s) for data.
Centers for Medicare and Medicaid Services Download API
After creating a job, the API to download the generated bulk download files
Centers for Medicare and Medicaid Services Export API
API through which an authenticated and authorized PDP sponsor may request a bulk-data export from a server.
Centers for Medicare and Medicaid Services Group API
The group API from Centers for Medicare and Medicaid Services — 2 operation(s) for group.
Centers for Medicare and Medicaid Services Health API
The health-api API from Centers for Medicare and Medicaid Services — 1 operation(s) for health-api.
Centers for Medicare and Medicaid Services Job API
The job API from Centers for Medicare and Medicaid Services — 4 operation(s) for job.
Centers for Medicare and Medicaid Services Maintenance Mode API
The maintenance-mode-api API from Centers for Medicare and Medicaid Services — 1 operation(s) for maintenance-mode-api.
Centers for Medicare and Medicaid Services Metadata API
The metadata API from Centers for Medicare and Medicaid Services — 3 operation(s) for metadata.
Centers for Medicare and Medicaid Services Status API
API to determine the status of the job, the files to download once the job is complete and an endpoint to cancel a job
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Open Collections 36
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONCMS AB2D API
OPEN COLLECTIONCMS AB2D Articles API
OPEN COLLECTIONCMS AB2D Articles Auth API
OPEN COLLECTIONCMS Beneficiary Claims Data API (BCDA)
OPEN COLLECTIONCMS AB2D Articles Benchmarks API
OPEN COLLECTIONCMS Beneficiary FHIR Data Server (BFD)
OPEN COLLECTIONCMS Blue Button 2.0 API
OPEN COLLECTIONCMS AB2D Articles Bulk Export API
OPEN COLLECTIONCMS AB2D Articles Catalog API
OPEN COLLECTIONCMS AB2D Articles Coverage API
OPEN COLLECTIONCMS AB2D Articles Data API
OPEN COLLECTIONCMS Data at the Point of Care API (DPC)
OPEN COLLECTIONCMS AB2D Articles Drugs API
OPEN COLLECTIONCMS AB2D Articles Eligibility API
OPEN COLLECTIONCMS AB2D Articles ExplanationOfBenefit API
OPEN COLLECTIONCMS AB2D Articles Geography API
OPEN COLLECTIONCMS AB2D Articles Group API
OPEN COLLECTIONCMS AB2D Articles Issuers API
OPEN COLLECTIONCMS AB2D Articles LCD API
OPEN COLLECTIONCMS Marketplace API
OPEN COLLECTIONCMS Medicare Coverage Database API
OPEN COLLECTIONCMS AB2D Articles Measurements API
OPEN COLLECTIONCMS AB2D Articles MEDCAC API
OPEN COLLECTIONCMS AB2D Articles Metadata API
OPEN COLLECTIONCMS AB2D Articles NCD API
OPEN COLLECTIONCMS Open Data API (data.cms.gov)
OPEN COLLECTIONCMS AB2D Articles Organization API
OPEN COLLECTIONCMS AB2D Articles Patient API
OPEN COLLECTIONCMS AB2D Articles Plans API
OPEN COLLECTIONCMS AB2D Articles Practitioner API
OPEN COLLECTIONCMS Provider Data Catalog API
OPEN COLLECTIONCMS AB2D Articles Providers API
OPEN COLLECTIONCMS Quality Payment Program API
OPEN COLLECTIONCMS AB2D Articles Scoring API
OPEN COLLECTIONCMS AB2D Articles Submissions API
OPEN COLLECTIONScroll for all 36
Rate Limits 1
Documented rate limits and quota policies.
Cms Gov Rate Limits
RATE LIMITSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Cms Gov Context
JSON-LDSpectral Rules 2
Spectral governance rulesets for linting and validating these APIs.
JSON Schema 3
Standalone JSON Schema definitions for this provider's data models.
Examples 4
Example request and response payloads for these APIs.
Cms Gov Bcda Job Example
EXAMPLECms Gov Patient Example
EXAMPLESecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 6
Portal, sign-up, and the first successful call
Documentation 5
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 8
Status, limits, changes, and where to get help
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Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
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