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HAPI FHIR

FHIR Server / Library General Apache License 2.0 Enterprise / On-Premise
2369 GitHub Stars
1511 Open Issues
true Docker Support
2026-07-29 Last Updated

Technical Summary

HAPI FHIR is the most complete, open-source Java implementation of the HL7 FHIR specification. Started in 2014, it serves as the foundational open-source library for many enterprise-grade healthcare applications, cloud providers, and national health networks.

Key Capabilities

  • Comprehensive Standard Support: HAPI FHIR supports all versions of the FHIR standard, including DSTU2, STU3, R4, and the latest R5, making it incredibly versatile for both legacy and modern systems.
  • Plain Server and JPA Server: Developers can use the library to add FHIR APIs to an existing database, or deploy the complete JPA Server to use as a fully-featured standalone Clinical Data Repository (CDR).
  • Validation and Parsers: Includes robust parsers for converting between XML/JSON and Java objects, as well as an advanced validation engine for checking resources against FHIR profiles and IG (Implementation Guides).

Usage in Healthcare

HAPI FHIR is designed for enterprise deployment. It is ideal for health systems building massive data lakes, organizations setting up FHIR facades over legacy EHR databases, and developers requiring deep, specification-compliant FHIR manipulation tools in Java.

Model Card Details

Architecture

Java-based implementation of the HL7 FHIR specification with Spring Boot integration.

Intended Use Cases

Enterprise healthcare interoperability, clinical data repositories, FHIR API gateways.

💻 Quick Developer Integration

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