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SiteCheck NPI Registry Lookup
x402
SiteCheck NPI Registry Lookup is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).
Looks up US healthcare providers by NPI number, name, or state using the NPPES NPI Registry
Price / call$0.001
Success—
StatusUnknown
How this service works
US healthcare providers from the NPPES NPI Registry: look up one by its 10-digit NPI (check digit verified) or search by name with an optional state. Each provider gives type, name, credential, status, primary taxonomy and practice address. Information only, not medical advice.
Output
Returns a JSON object with the matched provider's NPI, full name, provider type (individual or organization), active status, practice address (street, city, state, postal code), phone number, taxonomy/specialty, and credential, along with the query parameters used and a timestamp. Attribution to the NPPES NPI Registry is included.
Example use cases
Verify provider NPI before billing
“I need to confirm that NPI 1063837144 is active and get the provider's full name and taxonomy before we submit the insurance claim.”
Find licensed social workers in California
“Can you search the NPI registry for clinical social workers named Kelley in California and give me their practice addresses and phone numbers?”
Enrich patient referral with provider details
“We're sending a referral to a provider but only have the name 'Smith' in Texas — can you pull up their NPI registry info including specialty and office address?”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/npi?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to look up or verify US healthcare provider information from the official NPPES NPI Registry, including active status, specialty taxonomy, credentials, and practice location. Ideal for billing validation, provider enrichment, referral workflows, or compliance checks where authoritative government data is required. Prefer this over general web searches when you need structured, reliable NPI data with attribution.
Side effects
- No provider found matching the given NPI, name, or state — returns empty providers array
- Invalid NPI format (must be 10-digit number) — may return validation error or empty result
- Ambiguous name search returns many results or too many to return cleanly
- NPPES upstream API unavailability causing timeout or error
- State code not recognized if not two-letter uppercase format
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"query": {
"name": null,
"state": null,
"number": "1063837144"
},
"source": "https://npiregistry.cms.hhs.gov/api/ (NPPES NPI Registry v2.1)",
"checkedAt": "2026-10-14T07:00:43.329Z",
"providers": [
{
"npi": "1063837144",
"name": "JACKELYN RAE KELLEY",
"type": "individual",
"status": "active",
"practice": {
"city": "SAN FRANCISCO",
"phone": "724-544-3437",
"state": "CA",
"address": "1001 POTRERO AVE WARD 93",
"postalCode": "941103518"
},
"taxonomy": "Social Worker, Clinical",
"credential": "LCSW"
}
],
"attribution": "NPPES NPI Registry (US government data)"
}
}Tags
x402
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