How to use the NPI Registry API
Whether you call CMS directly or through a productized wrapper, the happy path is the same: pass a ten-digit NPI, handle 404 as “not in registry,” and map the response into your provider model.
Teams that want less glue code use Bearer API keys, OpenAPI, request IDs, and normalized name/taxonomy fields so telehealth, credentialing, and billing services share one schema.
After lookup works, add directory search when users type names instead of NPIs—confirm the final selection with a second lookup call.
curl example
curl -sS -H "Authorization: Bearer YOUR_API_KEY" "https://healthproviderapi.com/api/v1/npi/1003000126"Next steps