Centers for Medicare and Medicaid Services

aid: cms
name: Centers for Medicare and Medicaid Services
description: 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.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/cms/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Medicare
- Medicaid
- Healthcare
- Health Insurance
- FHIR
- Federal Government
- Drug Spending
- Provider Data
- Quality Measures
- Claims Data
apis:
- name: CMS Marketplace API
  description: Delivers data that helps users find and evaluate health care insurance plans, providers, and coverage information
    on the ACA Health Insurance Marketplace. Powers Healthcare.gov and third-party services with plan search, eligibility
    estimates, drug and provider coverage lookups, and out-of-pocket cost calculations.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.cms.gov/marketplace-api/
  baseURL: https://marketplace.api.healthcare.gov/api/v1
  tags:
  - Health Insurance
  - ACA
  - Marketplace
  - Plan Search
  - Drug Coverage
  - Provider Coverage
  properties:
  - type: Documentation
    url: https://developer.cms.gov/marketplace-api/
  - type: OpenAPI
    url: https://developer.cms.gov/marketplace-api/api-spec
  - type: Authentication
    url: https://developer.cms.gov/marketplace-api/key-request.html
  contact:
  - FN: CMS Marketplace API Support
    email: marketplace-api@cms-provider-directory.uservoice.com
- name: CMS Blue Button 2.0 API
  description: A standards-based API that delivers Medicare Part A, B, and D claims data for over 60 million Medicare beneficiaries.
    Uses HL7 FHIR standard for beneficiary data and OAuth 2.0 for authorization, enabling beneficiaries to connect their claims
    data to applications and research programs they trust.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://bluebutton.cms.gov/
  baseURL: https://api.bluebutton.cms.gov
  tags:
  - Medicare
  - Claims Data
  - FHIR
  - OAuth2
  - Beneficiary
  - Part A
  - Part B
  - Part D
  properties:
  - type: Documentation
    url: https://bluebutton.cms.gov/api-documentation
  - type: OpenAPI
    url: https://sandbox.bluebutton.cms.gov/docs/openapi
  - type: Sandbox
    url: https://sandbox.bluebutton.cms.gov/v1/accounts/login
  - type: GitHubRepository
    url: https://github.com/CMSgov/bluebutton-web-server
  contact:
  - FN: Blue Button Developer Group
    url: https://groups.google.com/g/developer-group-for-cms-blue-button-api
- name: CMS Beneficiary Claims Data API (BCDA)
  description: Enables Medicare Accountable Care Organizations (ACOs) and alternative payment model participants to retrieve
    Medicare Part A, B, and D claims data for their attributed enrollees. Implements the HL7 Bulk FHIR Implementation Guide
    and delivers NDJSON formatted claims data updated at least weekly.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://bcda.cms.gov/
  baseURL: https://bcda.cms.gov
  tags:
  - Medicare
  - ACO
  - Claims Data
  - FHIR
  - Bulk Data
  - Part A
  - Part B
  - Part D
  properties:
  - type: Documentation
    url: https://bcda.cms.gov/api-documentation.html
  - type: GitHubRepository
    url: https://github.com/CMSgov/bcda-app
  contact:
  - FN: BCDA Developer Community
    url: https://groups.google.com/g/bc-api
- name: CMS AB2D API (Claims Data to Part D Sponsors)
  description: 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 NDJSON format. Authenticates via Okta-based OAuth
    2.0 bearer tokens.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://ab2d.cms.gov/
  baseURL: https://api.ab2d.cms.gov
  tags:
  - Medicare
  - Part D
  - Claims Data
  - FHIR
  - Bulk Data
  - Prescription Drug Plans
  properties:
  - type: Documentation
    url: https://ab2d.cms.gov/api-documentation
  - type: AdvancedGuide
    url: https://ab2d.cms.gov/advanced-user-guide.html
- name: CMS Data at the Point of Care (DPC) API
  description: 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 of patient medical histories to improve care coordination
    and reduce redundant testing.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://dpc.cms.gov/
  baseURL: https://sandbox.dpc.cms.gov
  tags:
  - Medicare
  - FHIR
  - Provider
  - Point of Care
  - Claims Data
  - Care Coordination
  properties:
  - type: Documentation
    url: https://dpc.cms.gov/docsV1
  - type: GitHubRepository
    url: https://github.com/CMSgov/dpc-app
  contact:
  - FN: DPC API Developer Group
    url: https://groups.google.com/d/forum/dpc-api
- name: CMS Finder API
  description: 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 plan searches, and geographic lookups by ZIP code.
    Rate limited to 1000 requests per minute.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.cms.gov/finder-api/
  baseURL: https://finder.healthcare.gov
  tags:
  - Health Insurance
  - Plan Finder
  - Individual Plans
  - Small Group Plans
  - Healthcare.gov
  properties:
  - type: Documentation
    url: https://finder.healthcare.gov/#services
  - type: Authentication
    url: https://developer.cms.gov/finder-api/key-request.html
- name: CMS Procedure Price Lookup (PPL) API
  description: Provides bulk cost data including AMA procedure descriptions and Medicare cost data for approximately 4,000
    CPT/HCPCS medical procedure codes in hospital outpatient settings and ambulatory surgical centers. Requires both an AMA
    license and a CMS API key.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developer.cms.gov/ppl-api/
  baseURL: https://developer.cms.gov/ppl-api
  tags:
  - Procedure Pricing
  - CPT Codes
  - HCPCS
  - Medicare
  - Cost Data
  - Hospital Outpatient
  properties:
  - type: Documentation
    url: https://developer.cms.gov/ppl-api/
  - type: OpenAPI
    url: https://developer.cms.gov/ppl-api/api-spec
- name: CMS Quality Payment Program (QPP) Submissions API
  description: Enables QPP participants to submit quality performance data and receive real-time performance scoring feedback.
    Supports Merit-based Incentive Payment System (MIPS) and Advanced Alternative Payment Model (APM) data submissions for
    Medicare quality reporting.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://cmsgov.github.io/qpp-submissions-docs/
  baseURL: https://qpp.cms.gov/api
  tags:
  - Quality Payment Program
  - QPP
  - MIPS
  - APM
  - Medicare Quality
  - Performance Scoring
  properties:
  - type: Documentation
    url: https://cmsgov.github.io/qpp-submissions-docs/
common:
- type: Portal
  url: https://developer.cms.gov/
- type: DataPortal
  url: https://data.cms.gov/
- type: ProviderDataCatalog
  url: https://data.cms.gov/provider-data/
- type: GitHubOrganization
  url: https://github.com/cmsgov
- type: InteroperabilityGuidance
  url: https://www.cms.gov/priorities/burden-reduction/overview/interoperability/implementation-guides-standards/application-programming-interfaces-apis-relevant-standards-implementation-guides-igs
- type: PublicDatasets
  url: https://www.cms.gov/data-research/cms-data/data-available-everyone
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com