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2s.io US Healthcare Provider NPI Lookup
x402
2s.io US Healthcare Provider NPI Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.0012/call, status unknown (last checked 2026-09-14).
Looks up US healthcare providers (doctors, nurses, dentists, hospitals, pharmacies, etc.) by NPI number or name/state from the CMS NPPES NPI Registry
Price / call$0.0012
Success—
StatusUnknown
How this service works
US healthcare provider lookup (NPPES NPI Registry). Every US doctor, nurse, dentist, hospital, lab, pharmacy has an NPI — this returns the canonical record. Lookup by 10-digit NPI for a precise match, or by firstName + lastName + state for fuzzy search. Each record includes name + credentials, status, enumeration date, primary + secondary specialty taxonomies (with state license numbers), practice + mailing addresses, phone, and any cross-issuer identifiers (Medicaid, Medicare, etc.). Public-domain CMS data, free. For all three NPI datasets merged (identity + industry payments + Medicare billing) in one call, see /api/health/provider-profile.
Output
A canonical NPPES provider record including: provider name with credentials, NPI status, enumeration date, primary and secondary specialty taxonomies with associated state license numbers, practice and mailing addresses, phone number, enumeration type (individual or organization), and any cross-issuer identifiers such as Medicaid and Medicare IDs.
Example use cases
Example prompt
“Can you look up the NPI record for Dr. John Smith in Texas — I need his credentials, specialty taxonomy, practice address, and any Medicaid or Medicare identifiers?”
Technical details
Endpoint
GEThttps://2s.io/api/license/medicalWhen to prefer
Use this endpoint when you need authoritative, CMS-sourced provider records for any US-licensed healthcare professional or organization. It is the canonical source for NPI data, specialty taxonomies, and license numbers. Prefer this over general web searches when you need structured, machine-readable provider data for credentialing, verification, billing, or enrichment workflows. It is free (public domain CMS data) with a minimal per-call fee and supports both precise NPI lookup and fuzzy name+state search.
Side effects
- NPI not found: returns empty results or 404 if the 10-digit NPI does not exist in the registry
- Ambiguous name search: multiple providers with same name and state returned; caller must refine query
- Invalid NPI format: non-10-digit or non-numeric NPI returns an error
- Missing required parameters: request with neither npi nor name fields fails validation
- State filter missing: name-only searches without state may return too many results or timeout
- Payment failure: x402 payment not accepted results in 402 response
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "Johnson",
"limit": 10,
"state": "CA"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"ok": true,
"meta": {
"query": {
"npi": null,
"name": "Johnson",
"skip": 0,
"limit": 10,
"state": "CA",
"lastName": null,
"firstName": null,
"enumerationType": null
},
"returned": 10
},
"items": [
{
"npi": "1700235454",
"name": {
"last": "ACCARDO",
"first": "SHANNON",
"middle": "ANNALEE",
"credential": "LMFT",
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "FRESNO",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "659 W SHAW AVE STE C",
"address2": null,
"telephone": "559-519-4525",
"postalCode": "937042442"
},
{
"fax": null,
"city": "FRESNO",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "6051 N FRESNO ST STE 103",
"address2": null,
"telephone": "559-226-2273",
"postalCode": "937105280"
}
],
"taxonomies": [
{
"code": "106H00000X",
"desc": "Marriage & Family Therapist",
"primary": true,
"licenseState": "CA",
"licenseNumber": "106079"
}
],
"identifiers": [],
"lastUpdated": "2025-11-20",
"enumerationDate": "2016-06-03",
"enumerationType": "individual"
},
{
"npi": "1659748671",
"name": {
"last": "ACOSTA",
"first": "KAREN",
"middle": null,
"credential": null,
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "PASADENA",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "PO BOX 31001-0698",
"address2": null,
"telephone": "602-200-5383",
"postalCode": "911100698"
},
{
"fax": null,
"city": "PHOENIX",
"state": "AZ",
"country": "US",
"purpose": "LOCATION",
"address1": "4212 N 16TH ST",
"address2": null,
"telephone": "602-200-5383",
"postalCode": "850165319"
}
],
"taxonomies": [
{
"code": "163W00000X",
"desc": "Registered Nurse",
"primary": true,
"licenseState": "AZ",
"licenseNumber": "RN168651"
}
],
"identifiers": [],
"lastUpdated": "2015-08-25",
"enumerationDate": "2015-08-25",
"enumerationType": "individual"
},
{
"npi": "1437634912",
"name": {
"last": "ALEXANDER",
"first": "BROOKE",
"middle": "JOHNSON",
"credential": "MS CF-SLP",
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "BRENTWOOD",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "8660 BRENTWOOD BLVD",
"address2": null,
"telephone": "925-626-7474",
"postalCode": "945135655"
},
{
"fax": null,
"city": "BRENTWOOD",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "8660 BRENTWOOD BLVD",
"address2": null,
"telephone": "925-626-7474",
"postalCode": "945135655"
}
],
"taxonomies": [
{
"code": "390200000X",
"desc": "Student in an Organized Health Care Education/Training Program",
"primary": false,
"licenseState": "SC",
"licenseNumber": "6698"
},
{
"code": "246Q00000X",
"desc": "Spec/Tech, Pathology",
"primary": true,
"licenseState": "CA",
"licenseNumber": "31961"
}
],
"identifiers": [],
"lastUpdated": "2021-07-13",
"enumerationDate": "2018-10-01",
"enumerationType": "individual"
},
{
"npi": "1013406313",
"name": {
"last": "ALEXANDER",
"first": "JAMIE",
"middle": "LYN",
"credential": null,
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "WOODLAND HILLS",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "21600 OXNARD ST STE 1800",
"address2": null,
"telephone": "818-345-2345",
"postalCode": "913677807"
},
{
"fax": null,
"city": "TUCSON",
"state": "AZ",
"country": "US",
"purpose": "LOCATION",
"address1": "1200 N EL DORADO PL STE G700",
"address2": null,
"telephone": "520-526-0052",
"postalCode": "857154637"
}
],
"taxonomies": [
{
"code": "103K00000X",
"desc": "Behavior Analyst",
"primary": true,
"licenseState": "AZ",
"licenseNumber": "1-18-31273"
}
],
"identifiers": [],
"lastUpdated": "2021-09-23",
"enumerationDate": "2018-05-02",
"enumerationType": "individual"
},
{
"npi": "1689673154",
"name": {
"last": "ALLEN",
"first": "MARIA",
"middle": "ELAINE",
"credential": "PT",
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": "805-237-2416",
"city": "PASO ROBLES",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "1414 PARK ST",
"address2": null,
"telephone": "805-237-0272",
"postalCode": "934462160"
},
{
"fax": "805-237-2416",
"city": "PASO ROBLES",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "1414 PARK ST",
"address2": null,
"telephone": "805-237-0272",
"postalCode": "934462160"
}
],
"taxonomies": [
{
"code": "225100000X",
"desc": "Physical Therapist",
"primary": true,
"licenseState": "CA",
"licenseNumber": "PT11833"
}
],
"identifiers": [],
"lastUpdated": "2007-07-08",
"enumerationDate": "2005-07-18",
"enumerationType": "individual"
},
{
"npi": "1558772251",
"name": {
"last": "AROS",
"first": "JENNIFER",
"middle": null,
"credential": "BCBA",
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "ROHNERT PARK",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "2 PADRE PKWY STE 101",
"address2": null,
"telephone": "707-553-1784",
"postalCode": "949282114"
},
{
"fax": null,
"city": "ROHNERT PARK",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "2 PADRE PKWY STE 101",
"address2": null,
"telephone": "707-553-1784",
"postalCode": "949282114"
}
],
"taxonomies": [
{
"code": "103K00000X",
"desc": "Behavior Analyst",
"primary": false,
"licenseState": "CA",
"licenseNumber": null
},
{
"code": "103K00000X",
"desc": "Behavior Analyst",
"primary": true,
"licenseState": "CA",
"licenseNumber": "1-19-37440"
}
],
"identifiers": [],
"lastUpdated": "2020-12-28",
"enumerationDate": "2014-05-15",
"enumerationType": "individual"
},
{
"npi": "1073208575",
"name": {
"last": "ASHBY",
"first": "PAGE",
"middle": "RENEE",
"credential": null,
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "ANAHEIM",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "1301 E ORANGEWOOD AVE",
"address2": null,
"telephone": null,
"postalCode": "928056807"
},
{
"fax": null,
"city": "SAN DIEGO",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "5755 OBERLIN DR STE 300",
"address2": null,
"telephone": "800-249-1266",
"postalCode": "921214717"
}
],
"taxonomies": [
{
"code": "106S00000X",
"desc": "Behavior Technician",
"primary": true,
"licenseState": null,
"licenseNumber": null
}
],
"identifiers": [],
"lastUpdated": "2023-04-10",
"enumerationDate": "2023-04-10",
"enumerationType": "individual"
},
{
"npi": "1447806369",
"name": {
"last": "AUGUSTIN",
"first": "NIKKI",
"middle": "J",
"credential": "N.P.",
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "VACAVILLE",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "119 SCARLET ST",
"address2": null,
"telephone": "502-681-2942",
"postalCode": "956877628"
},
{
"fax": null,
"city": "SACRAMENTO",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "2825 CAPITOL AVE",
"address2": null,
"telephone": "916-887-0000",
"postalCode": "958166039"
}
],
"taxonomies": [
{
"code": "363LF0000X",
"desc": "Nurse Practitioner, Family",
"primary": true,
"licenseState": "CA",
"licenseNumber": "95012395"
}
],
"identifiers": [],
"lastUpdated": "2019-08-15",
"enumerationDate": "2019-08-15",
"enumerationType": "individual"
},
{
"npi": "1063809218",
"name": {
"last": "BARTON-GRIMLEY",
"first": "JESSICA",
"middle": "NICOLE",
"credential": "LCSW",
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": null,
"city": "LONG BEACH",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "6446 INDIANA AVE",
"address2": null,
"telephone": "562-480-1633",
"postalCode": "908052824"
},
{
"fax": null,
"city": "LONG BEACH",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "6446 INDIANA AVE",
"address2": null,
"telephone": "213-204-6664",
"postalCode": "908052824"
}
],
"taxonomies": [
{
"code": "225400000X",
"desc": "Rehabilitation Practitioner",
"primary": false,
"licenseState": "CA",
"licenseNumber": null
},
{
"code": "1041C0700X",
"desc": "Social Worker, Clinical",
"primary": true,
"licenseState": "CA",
"licenseNumber": "LCSW111386"
}
],
"identifiers": [],
"lastUpdated": "2025-03-06",
"enumerationDate": "2015-04-24",
"enumerationType": "individual"
},
{
"npi": "1760575682",
"name": {
"last": "BECK",
"first": "LISA",
"middle": "ANN",
"credential": "PA-C",
"organizationName": null
},
"status": "A",
"addresses": [
{
"fax": "530-587-4278",
"city": "TRUCKEE",
"state": "CA",
"country": "US",
"purpose": "MAILING",
"address1": "10978 DONNER PASS RD",
"address2": null,
"telephone": "530-582-1212",
"postalCode": "961610433"
},
{
"fax": "530-587-4278",
"city": "TRUCKEE",
"state": "CA",
"country": "US",
"purpose": "LOCATION",
"address1": "10978 DONNER PASS RD",
"address2": null,
"telephone": "530-582-1212",
"postalCode": "961610433"
}
],
"taxonomies": [
{
"code": "363A00000X",
"desc": "Physician Assistant",
"primary": true,
"licenseState": "NV",
"licenseNumber": "PA798"
}
],
"identifiers": [],
"lastUpdated": "2012-02-28",
"enumerationDate": "2006-10-02",
"enumerationType": "individual"
}
],
"total": null,
"source": {
"url": "https://npiregistry.cms.hhs.gov/",
"license": "Public domain (US government work)",
"provider": "NPPES — National Plan & Provider Enumeration System (CMS)"
}
},
"meta": {
"cost": {
"usd": 0.0012,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "license.medical",
"settlement": {
"txHash": "0x987dd9be800f6b0e8f314ae1ca8d579aaffa1f284b7ab118e20790b2ba03d571",
"network": "eip155:8453",
"success": true
}
}
}Tags
x402
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