care_site

Each FHIR Organization maps to one OMOP care_site row representing a healthcare facility or department. Organization.name becomes care_site_name, Organization.type maps to place_of_service_concept_id via OrganizationType vocabulary, and Organization.address resolves to a location row linked via location_id. FHIR Location can also contribute care_site rows in some implementations (see Location__care_site edge). FHIR Organization.partOf hierarchy is flattened -- each level becomes a separate care_site row with no parent linkage.

Secondary pattern: some implementations (notably fhir-to-omop-demo) create a care_site row from each FHIR Location resource, in addition to the primary care_site row from Organization. The Location-derived care_site row carries the location_id (linking to the location row from the same Location resource) while the Organization-derived row carries the name and place_of_service. The two rows share the same care_site_id and must be merged downstream. This pattern is NOT used by omoponfhir-v54, ETL-German, or NACHC.