taxonomy code lookup API
Taxonomy code lookup via NPI registry records
Taxonomies ride along with each NPI lookup and search hit so you can enforce specialty and license rules in your product.
No credit card on free tierOpenAPI specPostman collectionUS NPI Registry (NPPES) source dataNPI-1 and NPI-2
Why teams choose Health Provider API
Taxonomies ride along with each NPI lookup and search hit so you can enforce specialty and license rules in your product.
- Primary taxonomy highlighted on every provider payload
- Full taxonomy list when you need secondary specialties
- Pair with directory search to filter by name and location
Same registry, better integration surface
Authoritative NPPES data with predictable JSON, auth, and operational headers—so engineering can ship features instead of parsers.