✛ Live API · try it before you sign up

API Playground

Pick an endpoint, edit the value, hit Run, and see the real response. No account needed — this is the API itself, not a screenshot of it.

Endpoint+ 15 more data types →
GET
https://api.fhirfly.io/v1/npi/
Request
curl "https://api.fhirfly.io/v1/npi/1023011178" \
  -H "x-api-key: $FHIRFLY_KEY"
Response
Press Run to call the live endpoint
No sign-up, no key — this calls the live public API. A free key unlocks all 21+ data types, batch lookups, and search.
Get your own key — free →

NPI runs live against the public, no-auth endpoint (rate-limited per IP). The other data types are key-only, so they show a representative response (marked sample) — grab a free key to call all 21+ for real.

© 2026 FHIRfly.io LLC. All rights reserved. · Terminology data sourced from official registries, updated daily.