hapifhir/hapi-fhir

Health v2 · maintenance only

Adoption not part of the score

2390 stars · 1494 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

HAPI FHIR is a complete open-source Java implementation of the HL7 FHIR standard for healthcare data interoperability, providing APIs for building FHIR clients and servers. It includes a JPA-backed storage server, plain REST server, fluent/annotation clients, parsers/serializers, terminology support, and features like MDM, multitenancy, and batch processing.

Use cases

• build a FHIR server in Java
• parse and serialize FHIR resources
• call a FHIR API from a Java client
• store healthcare data with a JPA FHIR server
• implement HL7 FHIR interoperability
• support FHIR R4, R4B, and R5 versions
• run a multitenant FHIR repository
• validate and expand terminology ValueSets

When to choose

• you need a mature, spec-compliant FHIR implementation on the JVM
• you want a full JPA-backed FHIR server with search, terminology, and MDM out of the box
• you are building Java healthcare integrations and need client and server support in one library
• you need Apache-licensed software with long-term active maintenance

When to avoid

• your stack is not Java/JVM-based
• you only need lightweight JSON handling of FHIR without server or client infrastructure
• you need a non-FHIR healthcare standard like HL7 v2 (see hapi-hl7v2 instead)

Facets

library · maturity stable

api-framework http-server http-client serialization parser orm database search-engine sdk healthcare apis web-development backend jvm cross-platform self-hosted fhir hl7-fhir hl7 healthcare-interoperability jpa-server rest-server clinical-data mdm terminology apache-license interoperability

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