Registries

Each registry is mirrored through its own adapter. The canonical record shape is registry-neutral, so adding a country adds an adapter rather than changing the API.

US National Plan and Provider Enumeration System us-nppes

• Country: US
• Authority: Centers for Medicare & Medicaid Services
• Identifier: National Provider Identifier (NPI)
• Publication cadence: Monthly full replacement published around the middle of the month, weekly increments published each Monday, and a monthly deactivation report.
• Records: 29,158
• Breakdown: 28,463 active · 694 deactivated · 22,779 individuals · 5,685 organizations

Datasets

Dataset	Mode	Cadence	Latest release	Freshness
Monthly full replacement full	full	monthly	—	Unknown
Weekly incremental update weekly	incremental	weekly	2026-09-07..2026-09-13	Current
Monthly deactivation report deactivation	archive-only	monthly	—	Unknown

Use constraints

• CMS publishes NPPES data under the Freedom of Information Act. Records describe named individuals and organizations and are mirrored here verbatim.
• Issuance of an NPI does not establish that a provider is licensed or credentialed. Licence numbers are self-reported to CMS and are not verified by this service.
• Deactivated records are redacted at source: CMS blanks the entity type, names, and addresses and retains only the identifier and deactivation date.
• Employer Identification Numbers and parent organization taxpayer identifiers are excluded from ingestion and are never served.
• This description is metadata, not a legal determination. Consult the upstream terms before redistributing.

Planned

These registries carry no data. They are listed so integrators can see intended coverage.

• Canadian health care provider registries ca-cihi: Canada enumerates providers provincially rather than federally, so support requires one adapter per college and a cross-province identity edge model.
• NHS Organisation Data Service gb-nhs-ods: Organization-level only. Individual practitioners are held by the separate professional regulators and would be modeled as additional registries.
• Australian Health Practitioner Regulation Agency register au-ahpra: Published as a searchable register rather than a bulk download; support depends on an agreed bulk extract.