NPI registry (coming soon)
CMS NPPES: every US provider NPI with names, addresses and taxonomy codes.
| Source | CMS NPPES (data dissemination) |
| Source id | nppes |
| Release cadence | Weekly, with a monthly full file |
| License | Public (FOIA-disclosable) |
| Endpoints (planned) | /v1/providers/{npi}, /v1/providers?q=, /v1/providers/{npi}/validate |
The provider endpoints are in progress. Today you can check an NPI's format and check digit with
the MCP tool validate_npi, the SDK helper isValidNpi, or the
free NPI lookup.