WintEHR: A FHIR-Native Electronic Medical Record System for Educational Informatics

<div> Objective: We introduce WintEHR, a novel, open-source, educational EHR system designed to address the limitations of current training instruments. We present this platform for medical and health informatics education to train both clinicians and informaticists in standards usage, clinical workflow simulation, and clinical decision support.&nbsp; </div> <div> <br> </div> <div> Methods: WintEHR is built on a modern, container-based architecture using a React frontend and a FastAPI backend. Its design is "FHIR-First", leveraging a FHIR client and HAPI FHIR for resource storage and interaction. The development process was accelerated using an LLM for code generation, planning, and debugging. Clinical data was generated using Synthea to populate the EHR with patient histories. </div> <div> <br> </div> <div> Results: A FHIR-native EHR featuring a clinical workspace, comprehensive FHIR R4 API and interactive educational interface, real-time updates, DICOM viewer, and CDS Hooks for clinical decision support. The system is deployable using Docker, making it an accessible tool for education, research, testing, and development. </div> <div> <br> </div> <div> Conclusion: WintEHR directly addresses educational and interoperability gaps left by legacy systems and existing open-source alternatives. Through a standards-compliant, user-friendly environment, it serves as a training tool for clinicians and informaticists. The agile architecture positions it as a platform to accelerate testing, adoption, and instruction of proof-of-concept development for informatics innovation. By leveraging existing standards and LLM-powered development, it is possible to create user-centric tools that can prepare the next generation of clinicians and informaticists, ultimately serving the evolving needs of the healthcare ecosystem. </div>