FHIR to OMOP FHIR IG, published by HL7 International / Biomedical Research and Regulation. This guide is not an authorized publication; it is the continuous build for version 2.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-omop-ig/ and changes regularly. See the Directory of published versions

Acknowledgements

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This Implementation Guide was developed under the auspices of the Vulcan FHIR to OMOP work group.

We extend our heartfelt gratitude to Dr. Christopher Chute, whose vision and leadership made this project possible. Dr. Chute not only conceived and initiated this effort by proposing it to the Vulcan Steering Committee, but also provided unwavering executive sponsorship and representation throughout the entire project lifecycle. We also want to recognize the efforts of Vulcan PMO Director, Filippo Napoli whose skill and dedication were invaluable in helping us achieve this critical project milestone.

Primary Authors

Name	Organization
Davera Gabriel	Evidentli, Inc
Jean Duteau	Dogwood Consulting

STU Ballot

The following acknowledgements pertain to the STU ballot. Primary Authors, listed above, remain the same across both the Informative and STU ballots. Contributors recognized under the Informative ballot are acknowledged in full further below.

Vulcan FHIR to OMOP Working Group Co-Leads (STU Ballot)

Name	Organization
Jean Duteau	Dogwood Consulting
Davera Gabriel	Evidentli, Inc
Chris Roeder	Roeder Informatics, LLC

2026 Vulcan Virtual Connectathon

We are deeply appreciative of all the participants in the July 2026 Connectathon, whose testing and feedback on the technical artifacts materially advanced the FHIR-to-OMOP transformation ahead of the STU ballot. We especially appreciate the contributions of Chris Roeder of Roeder Informatics, LLC, who conceived and developed the FHIR to OMOP 2026 Connectathon Tooling: a containerized reference pipeline that loads this guide's StructureMaps into a FHIR mapping server, resolves clinical codes at runtime against a FHIR terminology server, writes results into an OMOP CDM v5.4 database, and validates them through the OHDSI Data Quality Dashboard and a StructureMap unit-test suite. The tooling served as the gold-standard baseline against which participant workflows were compared at the event, and persists as a resource for the Community at-large.

Suzan Ahmad	Somayeh Abedian
Davera Gabriel	Hannah Vinatzer
Mohammed Irfan	Neha Khairnar
Vanessa Pereira	Thomas Pleli
Mikael Rinnetmäki	Nikolai Ryzhikov
Steven Shi	Ron Sweeney
Stefan Beyer	Jean Duteau
Nilay Virenderkumar Haryal	Ingeborg Holt
Padma Karumuri	Qi Li
Joseph Plasek	Emma Ren
Chris Roeder	Nafeh Shoaib
Asif Syed	Qi Yang
Michael Van Treeck

Informative Ballot Acknowledgements

The following contributors are recognized for their work leading to the Informative ballot of this Implementation Guide.

Primary Authors (Informative Ballot)

Name	Organization
Davera Gabriel	Evidentli, Inc
Jean Duteau	Dogwood Consulting

Primary Editors (Informative Ballot)

Name	Organization
Adam Lee	University of North Carolina
Guy Tsafnat	Evidentli, Inc
Michael Van Treeck	Evidentli, Inc

Vulcan FHIR to OMOP Working Group Co-Leads (Informative Ballot)

Name	Organization
Davera Gabriel	Evidentli, Inc
Catherine Diederich	Duke University
Adam Lee	University of North Carolina
Lukasz Kaczmarek	F. Hoffmann-La Roche AG

Past project FHIR to OMOP transformation maps & technical implementation expertise contributed by

Organization	Contributors
CareEvolution, Inc	Ben Berk Scott Favre
Georgia Tech Research Institute (GTRI)	Myung Choi
Evidentli, Inc	Guy Tsafnat Michael Van Treeck Davera Gabriel
FHIR-OMOP Oncology Use Case Subgroup	Qi Yang (IQVIA) May Terry (MITRE Corp)
National Association of Community Health Centers (NACHC)	John Gresh (Curlew Consulting)
Technische Universitat (TU) Dresden	Elisa Henke Yuan Peng

FHIR - OMOP Collaboration Subgroup Leaders

We also recognize the exceptional contributions of the leaders from the four FHIR - OMOP subgroups that preceded the formation of the Vulcan IG project. These dedicated teams explored critical concepts and established foundational principles that were integrated into this implementation guide.

Data Harmonization Subgroup

Name	Organization
Ben Smith	Principia, Inc
Guy Tsafnat	Evidentli, Inc

Terminology Subgroup

Name	Organization
Davera Gabriel	Johns Hopkins University
Grahame Grieve	Health Intersections, Inc

Oncology Use Case Subgroup

Name	Organization
May Terry	MITRE Corporation
Qi Yang	IQVIA, INC

Digital Quality Measures Use Case

Name	Organization
Floyd Eisenberg	iParsimony, LLC
Ben Hamlin	National Committee for Quality Assurance

2025 Vulcan Virtual Connectathon

We are deeply appreciative of all the participants in the July 2025 Connectathon, whose valuable testing and feedback on the technical artifacts significantly accellerated the development of this implementation guide. We especially appreciate the contributions of Ben Berk and Scott Favre of CareEvolution who conceived and created the FHIR and OMOP Validation Package for the Connectathon, and a persisting resource for the Community at-large.

Rebecca Baker	Abderrazek Boufahja
Benjamin Berk	Myung Choi
Indraneel Dasari	Jean Duteau
Scott Favre	Davera Gabriel
Youngmi Han	Adam Lee
Prasanth Nannapaneni	Filippo Napoli
Chris Roeder	Will Roddy
Guy Tsafnat	Michael Van Treeck

Working Group Calls

Throughout this project, more than 100 individuals from over 70 organizations, representing academia, government, and industry contributed their decades of experience in managing Real-World Data to support the best practices proposed.

We recognize that this guide establishes an important foundation, and also acknowledge that many opportunities for additional data domains and use cases remain. Please eMail the Vulcan PMO with questions or comments falling outside the established HL7 balloting process. We welcome your feedback and encourage continued collaborations to more fully realize the transformative potential that these two complementary standards can bring to advancing human health.