NPI Provider Registry
Complete US healthcare provider directory, updated weekly
Full NPPES National Provider Identifier database covering 9M+ healthcare providers across all 50 states. Includes provider demographics, specialties, practice locations, and taxonomy codes. Updated weekly from CMS.
Also available with Verilex Professional Unlimited NPI lookups with your Pro subscription — from $14.95/mo
View Pro Plans x402 API — $0.018/query Snowflake — $0.027/query Databricks — $0.0216/query
Use cases
- ✓ Provider network adequacy analysis
- ✓ Claims processing and fraud detection
- ✓ HCP targeting and territory alignment
- ✓ Provider directory accuracy
Sample data
Example responses from the API. Each query returns structured JSON.
GET /api/v1/npi?state=TX&limit=1
{
"npi": "1528067512",
"name": "MARTINEZ, ELENA R",
"credential": "MD",
"taxonomy_code": "207R00000X",
"taxonomy_desc": "Internal Medicine",
"address": "4521 Medical Dr, Houston, TX 77004",
"enumeration_date": "2008-03-14"
}GET /api/v1/npi/1234567890
{
"npi": "1234567890",
"entity_type": "individual",
"name": "JOHNSON, MICHAEL A",
"credential": "DO",
"taxonomy_code": "208000000X",
"taxonomy_desc": "Pediatrics",
"address": "900 Elm St, Suite 210, Dallas, TX 75201",
"phone": "214-555-0142"
}GET /api/v1/npi/stats
{
"total_records": 8243671,
"last_updated": "2025-12-01",
"states_covered": 56,
"entity_types": { "individual": 6891243, "organization": 1352428 }
}Data fields
| Field | Type | Description |
|---|---|---|
| npi | string | 10-digit National Provider Identifier |
| provider_first_name | string | Provider first name (individuals) |
| provider_last_name_legal_name | string | Provider last name or organization legal name |
| provider_organization_name | string | Organization name (entity type 2) |
| provider_business_practice_location_address_state_name | string | Two-letter state code |
| taxonomy_code | string | Healthcare taxonomy code (primary) |
| enumeration_date | date | Date NPI was assigned |
Example queries
Find cardiologists in California
GET /api/v1/npi?state=CA&specialty=CardiologyReturns all providers in CA with cardiology taxonomy
Look up a specific provider
GET /api/v1/npi/1234567890Returns full profile for a single NPI number
Browse free sample data
GET /api/v1/npi/sampleReturns 100 California providers (free, no auth)
Data source
CMS NPPES
Update frequency: Weekly