Community Health Systems

Community Health Systems (CHS) is a Fortune 500 hospital operator that owns, leases, and operates general acute care hospitals across the United States. In compliance with the CMS Interoperability and Patient Access Final Rule (CMS-9115-F), CHS publishes FHIR R4 healthcare interoperability APIs that allow third-party applications to access patient demographics and clinical data, adjudicated claims and encounters, formulary information, and provider directory data. The APIs use the HL7 FHIR R4 standard and SMART-on-FHIR authorization for patient-scoped access.

2 APIs 0 Features

CMS-9115-FFHIRHealthcareHospitalsInteroperabilityPatient AccessProvider DirectorySMART-on-FHIRFortune 500

CMSInteroperability

Sources

opencollection: 1.0.0
info:
  name: Community Health Systems Patient Access API
  version: '2026-01-01'
request:
  auth:
    type: oauth2
    flow: authorization_code
    authorizationUrl: https://api.chs.net/oauth2/authorize
    accessTokenUrl: https://api.chs.net/oauth2/token
    credentials:
      clientId: '{{clientId}}'
      clientSecret: '{{clientSecret}}'
items:
- info:
    name: Patient
    type: folder
  items:
  - info:
      name: Search patients
      type: http
    http:
      method: GET
      url: https://api.chs.net/fhir/r4/Patient
      params:
      - name: family
        value: ''
        type: query
      - name: given
        value: ''
        type: query
      - name: birthdate
        value: ''
        type: query
    docs: Search for patient records using FHIR Patient resource.
- info:
    name: Claims
    type: folder
  items:
  - info:
      name: Search claims
      type: http
    http:
      method: GET
      url: https://api.chs.net/fhir/r4/ExplanationOfBenefit
      params:
      - name: patient
        value: ''
        type: query
    docs: Retrieve adjudicated claims data as ExplanationOfBenefit resources.
- info:
    name: Formulary
    type: folder
  items:
  - info:
      name: Search formulary
      type: http
    http:
      method: GET
      url: https://api.chs.net/fhir/r4/MedicationKnowledge
    docs: Retrieve formulary and medication information.
- info:
    name: Practitioner
    type: folder
  items:
  - info:
      name: Search practitioners
      type: http
    http:
      method: GET
      url: https://api.chs.net/fhir/r4/Practitioner
      params:
      - name: name
        value: ''
        type: query
      - name: specialty
        value: ''
        type: query
    docs: Search for provider directory information.
bundled: true

Community Health Systems

APIs

Community Health Systems Patient Access API

Community Health Systems Provider Directory API

Collections

Community Health Systems Patient Access API

Pricing Plans

Community Health Systems Plans Pricing

Rate Limits

Community Health Systems Rate Limits

FinOps

Community Health Systems Finops

Semantic Vocabularies

Community Health Systems Context

API Governance Rules

Community Health Systems API Rules

Press

Press Releases

Community Health Systems and Denim Health Announce a ...

CHS migrates to Google Cloud data platform, adopts ...

Community Health Systems, Inc. Announces Third Quarter ...

Community Health Systems Completes Data Migration and ...

Resources

Sources