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CMS NPI Registry Lookup
x402
CMS NPI Registry Lookup is a paid API for AI agents from x402-data-api-x6da.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Searches the CMS National Plan and Provider Enumeration System (NPPES) NPI Registry to find US healthcare providers by name, NPI number, taxonomy, location, or organization.
Price / call$0.01
Success—
StatusUnknown
How this service works
Jobs from company ATS boards, SEC EDGAR full-text search, domain RDAP/DNS, NHTSA VIN decode + recalls, the CMS NPI Registry and MET Norway weather forecasts. Pay per call in USDC on Solana via x402. Official public sources only.
Output
Returns a list of matching NPI provider records from the CMS NPPES registry, each containing the provider's NPI number, name (or organization name), enumeration type (individual vs. organization), taxonomy classifications, practice location address, phone number, and enumeration date. Results are filtered by the supplied search parameters and capped at max_results.
Example use cases
Verify physician NPI for billing
“Can you look up the NPI number for Dr. Robert Chen in California? His last name is Chen, state TX, specialty is internal medicine — I need this to submit an insurance claim.”
Find local mental health providers
“Search the NPI registry for licensed clinical social workers in Denver, Colorado — use state 'CO', city 'Denver', and taxonomy 'Clinical Social Worker', show me up to 10 results.”
Validate hospital NPI for credentialing
“I need to verify the NPI for Massachusetts General Hospital — search by organization name 'Massachusetts General Hospital' in the NPI registry and return the full provider details.”
Technical details
Endpoint
GEThttps://x402-data-api-x6da.onrender.com/v1/npi?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative NPI data directly from the official CMS NPPES registry source. Prefer this over third-party NPI lookup services when regulatory compliance, credentialing accuracy, or billing verification requires official government data. Best suited for healthcare applications, insurance workflows, provider directory enrichment, and compliance checks where NPI validity must be confirmed against the canonical source.
Side effects
- No matching providers found for the given search criteria — returns an empty result set
- Invalid or malformed NPI number format returns an error
- State or taxonomy values that don't match NPPES conventions may return zero results
- Rate limiting or upstream CMS NPPES API unavailability returns a 5xx error
- Payment failure via x402/USDC returns a 402 Payment Required before data is served
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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