NPPES NPI Registry
Centers for Medicare & Medicaid Services
The public registry of every US healthcare provider and organization with a National Provider Identifier, searchable via API and downloadable as monthly bulk files. The foundation layer for US provider directories and healthcare B2B data products.
Category
Open dataset
Access
Open access
Cost
Free
Region
US
Coverage
All NPI-registered US providers and organizations
Size
7M+ provider records
License / terms
Public domain (US government)
Data types
provider identifiers, specialties, practice addresses, organizations