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Full detail: Where this data comes from
Epic Systems Corporation is a privately held electronic health record (EHR/EMR) software company founded in 1979 and headquartered in Verona, Wisconsin, United States. Its "Epic on FHIR" developer program (fhir.epic.com / open.epic.com) exposes a standards-based HL7 FHIR interoperability surface for patient- and provider-facing apps, with live public sandbox endpoints across FHIR R4 (4.0.1), STU3 (3.0.1), and DSTU2 (1.0.2), SMART on FHIR / OAuth 2.0 authorization, FHIR Bulk Data ($export), and CDS Hooks. Epic is a core node of the U.S. healthcare interoperability landscape shaped by the ONC/CMS 21st Century Cures Act information-blocking rules and TEFCA.
APIs.json: https://raw.githubusercontent.com/api-evangelist/epic-systems/refs/heads/main/apis.yml
- Healthcare
- United States
- EHR
- EMR
- FHIR
- HL7
- Interoperability
- SMART on FHIR
- US Core
- Clinical Data
- Created: 2026-07-24
- Modified: 2026-07-24
Epic's HL7 FHIR R4 (4.0.1) REST API, aligned to the US Core implementation guides, exposing 59 resource types with read, search, create, and update interactions, authorized with SMART on FHIR / OAuth 2.0.
- Human URL: https://fhir.epic.com/Specifications
- Base URL:
https://fhir.epic.com/interconnect-fhir-oauth/api/FHIR/R4
- CapabilityStatement — harvested verbatim from the live R4
metadataendpoint - SMART Configuration
- Documentation
- API Reference
- Authentication
Epic's HL7 FHIR STU3 (3.0.1) REST API for clinical and administrative resources, authorized with SMART on FHIR / OAuth 2.0.
- Human URL: https://fhir.epic.com/Specifications
- Base URL:
https://fhir.epic.com/interconnect-fhir-oauth/api/FHIR/STU3
- CapabilityStatement — harvested verbatim
- Documentation
- API Reference
Epic's HL7 FHIR DSTU2 (1.0.2) REST API, published as a FHIR Conformance resource covering the legacy DSTU2 resource set.
- Human URL: https://fhir.epic.com/Specifications
- Base URL:
https://fhir.epic.com/interconnect-fhir-oauth/api/FHIR/DSTU2
- Conformance — harvested verbatim
- Documentation
- API Reference
Epic's SMART on FHIR / OAuth 2.0 authorization surface backing the FHIR APIs, with EHR and standalone launch, confidential/asymmetric clients, OpenID Connect, and SMART v1/v2 permission scopes.
- Human URL: https://fhir.epic.com/Documentation?docId=oauth2
- Base URL:
https://fhir.epic.com/interconnect-fhir-oauth/oauth2
- SMART Configuration — harvested verbatim
- Documentation
- Authentication
Epic's implementation of the HL7 FHIR Bulk Data Access (Flat FHIR) $export operation for backend, system-level population export, authorized with OAuth 2.0 client-credentials (asymmetric client authentication).
- Human URL: https://fhir.epic.com/Documentation?docId=bulkdataaccesstutorial
- Base URL:
https://fhir.epic.com/interconnect-fhir-oauth/api/FHIR/R4
Epic's support for the CDS Hooks specification, letting external clinical decision support services return cards and SMART app launch links at documented workflow hook points inside the Epic EHR.
- Website
- Developer Portal
- Documentation
- API Reference
- Getting Started
- Authentication
- Sign Up / Client Registration
- Terms of Service (API License Agreement)
FN: Kin Lane Email: kin@apievangelist.com