R/attributes-concept.R
providerSpecialtyConcepts.RdWhen JSON has VisitOccurrence.ProviderSpecialty: [{ CONCEPT_ID: ... }], use this
so round-trip preserves the PR.specialty_concept_id in (...) filter.
providerSpecialtyConcepts(...)Integer concept IDs for provider specialty (e.g. 38004463L).
A conceptAttribute with name ProviderSpecialty for use in visit().