FHIR to OMOP for HIEs and HDUs: One Normalized Data Asset, Many Uses

An introduction to the Vulcan FHIR Accelerator, featuring one of its many work products: the HL7 Vulcan FHIR to OMOP Implementation Guide.

HIEs and HDUs receive the same clinical facts in many forms from many sources. The FHIR to OMOP Implementation Guide gives the exchange community a governed method for reconciling what arrives over FHIR into one population-level dataset in the OMOP Common Data Model, so the asset is built once and reused: payer quality measurement, public health reporting, Medicaid analytics, and the observational studies that already run on OMOP. The guide passed HL7 ballot in September 2026. This session covers where the work came from (the 2021 HL7 and OHDSI agreement and the Vulcan project), what the guide specifies and what it leaves to the implementer, what the July 2026 Connectathon showed across 17 organizations, and a first step any HIE can take this quarter: checking whether the counts at exchange match the counts at the contributor.