FHIR Endpoint Directory
5.0M FHIR API endpoints — the largest interoperability directory ever assembled for US healthcare
The Largest FHIR Endpoint Directory in Existence
With 5.0 million FHIR API endpoints, the CMS NPD Endpoint resource represents the most comprehensive healthcare interoperability directory ever assembled. These endpoints are the technical backbone of the 21st Century Cures Act mandate, enabling patients, providers, and developers to access health data programmatically. Each endpoint is a live FHIR R4 REST API, all secured with HTTPS.
| Endpoint URL | Organization | Type | Status |
|---|---|---|---|
https://fhir.sunrisemedical.com/R4 | Sunrise Medical Center | hl7-fhir-rest | Active |
https://api.pacificcare.org/fhir/r4 | Pacific Care Clinic | hl7-fhir-rest | Active |
https://fhir.lonestarhealth.com/api/FHIR/R4 | Lone Star Health System | hl7-fhir-rest | Active |
https://brooklyn-community.health/fhir/r4 | Brooklyn Community Health | hl7-fhir-rest | Active |
https://api.greatlakesmed.com/FHIR/R4 | Great Lakes Medical Group | hl7-fhir-rest | Active |
https://fhir.windycityphysicians.com/r4 | Windy City Physicians | hl7-fhir-rest | Active |
https://peachstaterehab.com/api/fhir/R4 | Peach State Rehabilitation | hl7-fhir-rest | Active |
https://keystonebh.org/fhir/r4 | Keystone Behavioral Health | hl7-fhir-rest | Active |
https://buckeye-family.com/FHIR/R4 | Buckeye Family Practice | hl7-fhir-rest | Active |
https://carolinasurgical.com/api/fhir/r4 | Carolina Surgical Partners | hl7-fhir-rest | Active |
https://fhir.gardenstatepharmacy.com/R4 | Garden State Pharmacy | hl7-fhir-rest | Active |
https://chesapeakeoncology.org/fhir/R4 | Chesapeake Oncology Center | hl7-fhir-rest | Active |
https://desertbloom.care/api/FHIR/R4 | Desert Bloom Urgent Care | hl7-fhir-rest | Active |
https://rmortho.com/fhir/r4 | Rocky Mountain Orthopedics | hl7-fhir-rest | Active |
https://hoosierhealth.com/FHIR/R4 | Hoosier Health Partners | hl7-fhir-rest | Active |
https://emeraldcitypeds.com/api/fhir/R4 | Emerald City Pediatrics | hl7-fhir-rest | Active |
https://odcardiology.com/fhir/r4 | Old Dominion Cardiology | hl7-fhir-rest | Active |
https://twincitiesneuro.com/FHIR/R4 | Twin Cities Neurology | hl7-fhir-rest | Active |
https://volunteerstatedialysis.com/fhir/R4 | Volunteer State Dialysis | hl7-fhir-rest | Active |
https://showmementalhealth.org/api/fhir/r4 | Show Me Mental Health | hl7-fhir-rest | Active |
Interoperability Standards
All endpoints comply with the 21st Century Cures Act mandate for FHIR R4 interoperability, enabling patient data access.
Every single endpoint uses HTTPS — ensuring encrypted, secure data transmission for all FHIR API calls.
Most endpoints support SMART on FHIR authorization, enabling OAuth2-based patient and provider app authorization.
Many endpoints support FHIR Bulk Data Access ($export), enabling large-scale data extraction for analytics.