HL7/fhir
Nov 2024 – Apr 2026
12 Months active
Languages Used
JavaTextXMLHTMLUnknown
Technical Skills
API DevelopmentBackend DevelopmentData ModelingDocumentationFHIRFHIR Standards
JohnMoehrke
PROFILE
Johnmoehrke
Over the past year, contributed to the HL7/fhir repository by delivering 57 features and resolving 38 bugs, focusing on healthcare data standards, security, and interoperability. Work included refining FHIR resource definitions, enhancing provenance and audit logging, and improving imaging data workflows. Leveraged Java, XML, and HTML to implement robust data modeling, validation, and documentation updates, ensuring compliance with evolving standards. Emphasized security best practices through permission management and digital signature enhancements. Maintained code quality with targeted bug fixes, configuration management, and build stability improvements, supporting reliable deployments and clear guidance for implementers across the healthcare interoperability ecosystem.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
188Total
Bugs
38
Commits
188
Features
57
Lines of code
9,062
Activity Months12
Your Network
56 peopleShared Repositories
56
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ajuliansrMember
khalifa-alyMember
Benjamin FlessnerMember
Bas van den HeuvelMember
brian_posMember
Bryn RhodesMember
Bryn RhodesMember
Chris CioffiMember
Work History
April 2026
30 Commits • 11 Features
Apr 1, 2026April 2026 (2026-04) monthly summary for HL7/fhir repo. Delivered a combination of feature enhancements, provenance improvements, and security/maintenance work that improves interoperability, traceability, and security posture for implementers and vendors. The work emphasizes normative alignment, better governance of provenance data, and stabilized CI/build pipelines to accelerate delivery.
30 Commits • 11 Features
Apr 1, 2026April 2026 (2026-04) monthly summary for HL7/fhir repo. Delivered a combination of feature enhancements, provenance improvements, and security/maintenance work that improves interoperability, traceability, and security posture for implementers and vendors. The work emphasizes normative alignment, better governance of provenance data, and stabilized CI/build pipelines to accelerate delivery.
April 2026
March 2026
15 Commits • 4 Features
Mar 1, 2026March 2026 monthly summary for HL7/fhir: Delivered comprehensive enhancements across documentation, provenance handling, DocumentReference behavior, and XML mappings. The work emphasizes security, non-repudiation, provenance integrity, and interoperability, with targeted fixes to improve guidance, robustness, and search semantics. The updates align with ballot guidance and build stability, delivering clearer rules and mappings for implementers and auditors.
March 2026
15 Commits • 4 Features
Mar 1, 2026March 2026 monthly summary for HL7/fhir: Delivered comprehensive enhancements across documentation, provenance handling, DocumentReference behavior, and XML mappings. The work emphasizes security, non-repudiation, provenance integrity, and interoperability, with targeted fixes to improve guidance, robustness, and search semantics. The updates align with ballot guidance and build stability, delivering clearer rules and mappings for implementers and auditors.
November 2025
18 Commits • 3 Features
Nov 1, 2025Month: 2025-11 — HL7/fhir. Focused on strengthening provenance auditing and security labeling to improve compliance, interoperability, and developer clarity. Delivered four major contributions across documentation, vocabularies, and standards, representing 18 commits. Key outcomes include: enhanced AuditEvent and Consent provenance documentation with normative language and new examples; comprehensive security vocabulary and labeling updates with renamed files, updated URLs, and several examples; provenance standards and status flags updated for production readiness; and targeted typos fixes in security labeling and provenance references. These changes improve auditability, reduce implementation risk, and align with FHIR standards and FMG guidance. Technologies demonstrated include provenance modeling, value-set management, XML normative updates, documentation QA, and changelog discipline.
18 Commits • 3 Features
Nov 1, 2025Month: 2025-11 — HL7/fhir. Focused on strengthening provenance auditing and security labeling to improve compliance, interoperability, and developer clarity. Delivered four major contributions across documentation, vocabularies, and standards, representing 18 commits. Key outcomes include: enhanced AuditEvent and Consent provenance documentation with normative language and new examples; comprehensive security vocabulary and labeling updates with renamed files, updated URLs, and several examples; provenance standards and status flags updated for production readiness; and targeted typos fixes in security labeling and provenance references. These changes improve auditability, reduce implementation risk, and align with FHIR standards and FMG guidance. Technologies demonstrated include provenance modeling, value-set management, XML normative updates, documentation QA, and changelog discipline.
November 2025
October 2025
21 Commits • 5 Features
Oct 1, 2025October 2025 monthly summary for HL7/fhir repository focusing on delivering robust imaging data handling, improved mapping robustness, and build/documentation hygiene. Notable work reduced data inconsistencies and improved interoperability by tightening references, validation, and QA processes.
October 2025
21 Commits • 5 Features
Oct 1, 2025October 2025 monthly summary for HL7/fhir repository focusing on delivering robust imaging data handling, improved mapping robustness, and build/documentation hygiene. Notable work reduced data inconsistencies and improved interoperability by tightening references, validation, and QA processes.
September 2025
1 Commits
Sep 1, 2025September 2025 focused on stabilizing HL7/fhir behavior by addressing a regression (IST-7). Delivered a targeted bug fix with a minimal three-line change, and validated across affected flows to ensure interoperability and minimize user impact.
1 Commits
Sep 1, 2025September 2025 focused on stabilizing HL7/fhir behavior by addressing a regression (IST-7). Delivered a targeted bug fix with a minimal three-line change, and validated across affected flows to ensure interoperability and minimize user impact.
September 2025
August 2025
19 Commits • 8 Features
Aug 1, 2025August 2025 was focused on strengthening security, improving data integrity, and increasing system robustness in the HL7/fhir repository. Delivered targeted features including allergy versioning, release-wide August updates, optional ImagingSelection modality, and stabilization of IST-7/IST-6 with improved documentation. These changes improve security, interoperability with updated standards, and maintainability, enabling safer deployments and faster issue resolution.
August 2025
19 Commits • 8 Features
Aug 1, 2025August 2025 was focused on strengthening security, improving data integrity, and increasing system robustness in the HL7/fhir repository. Delivered targeted features including allergy versioning, release-wide August updates, optional ImagingSelection modality, and stabilization of IST-7/IST-6 with improved documentation. These changes improve security, interoperability with updated standards, and maintainability, enabling safer deployments and faster issue resolution.
July 2025
4 Commits • 1 Features
Jul 1, 2025July 2025 performance summary for HL7/fhir repo. This month focused on improving data integrity, search reliability, and domain-specific NLP capabilities in alignment with governance and patient data safety requirements. Delivered targeted improvements with concise commits and clear business value, while maintaining code quality and maintainability across critical components.
4 Commits • 1 Features
Jul 1, 2025July 2025 performance summary for HL7/fhir repo. This month focused on improving data integrity, search reliability, and domain-specific NLP capabilities in alignment with governance and patient data safety requirements. Delivered targeted improvements with concise commits and clear business value, while maintaining code quality and maintainability across critical components.
July 2025
March 2025
4 Commits • 3 Features
Mar 1, 2025Month 2025-03 — HL7/fhir: Delivered targeted improvements in data integrity, interoperability, and build hygiene. Key features delivered include invariant testing for the FHIR data model, and digital signature documentation and interoperability enhancements (detached signatures, XAdES/JAdES profiles, cross-format signing for XML/JSON). A UI bug fix improved Consent page rendering. Also performed spell-check dictionary cleanup to prevent build-time issues. These efforts improve data quality, interoperability with signing workflows, UI reliability, and maintainability. Technologies demonstrated include test automation for data models, XML/JSON cross-format signing, and documentation-driven security practices.
March 2025
4 Commits • 3 Features
Mar 1, 2025Month 2025-03 — HL7/fhir: Delivered targeted improvements in data integrity, interoperability, and build hygiene. Key features delivered include invariant testing for the FHIR data model, and digital signature documentation and interoperability enhancements (detached signatures, XAdES/JAdES profiles, cross-format signing for XML/JSON). A UI bug fix improved Consent page rendering. Also performed spell-check dictionary cleanup to prevent build-time issues. These efforts improve data quality, interoperability with signing workflows, UI reliability, and maintainability. Technologies demonstrated include test automation for data models, XML/JSON cross-format signing, and documentation-driven security practices.
February 2025
51 Commits • 13 Features
Feb 1, 2025February 2025 HL7/fhir monthly summary: Delivered a set of feature enhancements, stability fixes, and security hardening across core FHIR profiles, with a focus on provenance accuracy, permission governance, and imaging data quality. Notable work includes agent modeling improvements with event-pattern alignment, provenance correctness updates and crash fixes, backbone-based permission expansion with CRUDE vocabulary corrections, imaging data enhancements (ImagingStudy, DICOM references, and related invariants), and new IG-based permission directory management examples along with diagnostics improvements. The month also included security hardening for the 2025-02 cycle and build-stability fixes to prevent regressions.
51 Commits • 13 Features
Feb 1, 2025February 2025 HL7/fhir monthly summary: Delivered a set of feature enhancements, stability fixes, and security hardening across core FHIR profiles, with a focus on provenance accuracy, permission governance, and imaging data quality. Notable work includes agent modeling improvements with event-pattern alignment, provenance correctness updates and crash fixes, backbone-based permission expansion with CRUDE vocabulary corrections, imaging data enhancements (ImagingStudy, DICOM references, and related invariants), and new IG-based permission directory management examples along with diagnostics improvements. The month also included security hardening for the 2025-02 cycle and build-stability fixes to prevent regressions.
February 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) performance summary for HL7/fhir: Delivered System Status Value Expansion by extending the status enumeration/configuration, enabling its use across modules for improved workflow tracking and reporting. No major bugs fixed this month. Impact includes improved data consistency, streamlined cross-module workflows, and a foundation for future analytics. Demonstrated skills in back-end config/enum design, repository maintenance, and Git-based collaboration.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) performance summary for HL7/fhir: Delivered System Status Value Expansion by extending the status enumeration/configuration, enabling its use across modules for improved workflow tracking and reporting. No major bugs fixed this month. Impact includes improved data consistency, streamlined cross-module workflows, and a foundation for future analytics. Demonstrated skills in back-end config/enum design, repository maintenance, and Git-based collaboration.
December 2024
14 Commits • 6 Features
Dec 1, 2024December 2024: Delivered substantial improvements across data integrity, imaging data management, auditing, and security modeling for the HL7/fhir repository. The work strengthens interoperability, compliance, and data governance while maintaining stability through careful rollbacks and quality improvements.
14 Commits • 6 Features
Dec 1, 2024December 2024: Delivered substantial improvements across data integrity, imaging data management, auditing, and security modeling for the HL7/fhir repository. The work strengthens interoperability, compliance, and data governance while maintaining stability through careful rollbacks and quality improvements.
December 2024
November 2024
10 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary focused on delivering data-model and documentation improvements in HL7/fhir that directly enhance interoperability, data integrity, and developer experience for imaging workflows.
November 2024
10 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary focused on delivering data-model and documentation improvements in HL7/fhir that directly enhance interoperability, data integrity, and developer experience for imaging workflows.
Activity
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Quality Metrics
Correctness87.8%
Maintainability88.0%
Architecture84.6%
Performance82.6%
AI Usage24.8%
Skills & Technologies
Programming Languages
HTMLJavaTextUnknownXML
Technical Skills
API DevelopmentAuditingBackend DevelopmentBug FixingCode CleanupCode RefactoringCode ReversionConfigurationConfiguration ManagementData CleaningData Dictionary ManagementData IntegrityData ManagementData MappingData Modeling
Repositories Contributed To
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