EHR (Electronic Health Record) Systems

Typical Vendor / Platform	Interoperability Method	FHIR R4 Support	Notes
Epic	SMART on FHIR, FHIR REST API	✅ Native	Supports bulk export, patient access, clinical apps
Cerner (Oracle Health)	SMART on FHIR, FHIR REST API	✅ Native	Broad clinical resource coverage
MEDITECH	FHIR API, HL7v2	✅ Partial	FHIR growing, legacy still common
Allscripts	FHIR API, HL7v2	✅ Partial	Often hybrid deployments
Athenahealth	FHIR API	✅ Native	Good outpatient coverage
eClinicalWorks	FHIR API	✅ Native	Strong ambulatory support
NextGen	FHIR API	✅ Native	Ambulatory workflows