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.

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

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=Cardiology

Returns all providers in CA with cardiology taxonomy

Look up a specific provider

GET /api/v1/npi/1234567890

Returns full profile for a single NPI number

Browse free sample data

GET /api/v1/npi/sample

Returns 100 California providers (free, no auth)

Data source

CMS NPPES

Update frequency: Weekly