Centers for Medicare and Medicaid Services

NPPES NPI Registry API

The NPPES NPI Registry API provides free public access to look up active National Provider Identifier records for individual and organizational healthcare providers, supporting FHIR-compatible JSON responses used widely in credentialing, directory, and claims validation workflows.

GitHub

Documentation

📖
Documentation
https://npiregistry.cms.hhs.gov/api-page

Other Resources

🔗
Website
https://npiregistry.cms.hhs.gov/
🔗
Help
https://npiregistry.cms.hhs.gov/help-api/

API entry from apis.yml

apis.yml Raw ↑ 
aid: centers-for-medicare-and-medicaid-services:nppes-npi-registry
name: NPPES NPI Registry API
tags:
- Credentialing
- NPI
- NPPES
- Provider Identifier
- Provider Registry
humanURL: https://npiregistry.cms.hhs.gov/
baseURL: https://npiregistry.cms.hhs.gov/api/
properties:
- url: https://npiregistry.cms.hhs.gov/
  type: Website
- url: https://npiregistry.cms.hhs.gov/api-page
  type: Documentation
- url: https://npiregistry.cms.hhs.gov/help-api/
  type: Help
description: The NPPES NPI Registry API provides free public access to look up active National Provider
  Identifier records for individual and organizational healthcare providers, supporting FHIR-compatible
  JSON responses used widely in credentialing, directory, and claims validation workflows.