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Provider directory

provider records

Every record traces to a federal source.

Search by NPI, specialty, or state. Each field carries its source name, snapshot date, methodology version, and limitation. No pay-to-rank. No editorial curation of who appears.

Look up an NPI →
22federal source familiesPublic-record families powering the provider graph.
26registered sourcesSources with a detail page on /sources.
13dataset pagesLive at /data with schema + download.
Look up a provider

Find a provider by NPI.

Enter a 10-digit National Provider Identifier to see CMS NPPES enrollment data, MIPS quality scores, and OIG exclusion status — each field shown with its source and date.

NPI lookup tool →
Browse the directory

Browse providers by specialty or state.

  • Specialty index

    By specialty

    Every NPPES taxonomy specialty, from allergy & immunology to wound care — each with its own source-provenanced hub.

    Browse specialties →

  • State index

    By state

    All 50 states and the District of Columbia, drawn from the national provider registry.

    Browse states →
Top specialties
dermatologypsychiatrycardiologyobgynpediatricsneurologyoncologyorthopedic surgeryophthalmologygastroenterologyurologyotolaryngologyplastic surgerypulmonologyendocrinologyrheumatologynephrologyinfectious diseasegeriatricschiropractic
Top states
californiatexasfloridanew yorkpennsylvaniaillinoisohiogeorgianorth carolinamichigannew jerseyvirginiawashingtonarizonamassachusettstennesseeindianamissourimarylandwisconsin
Data infrastructure

How the provider graph is built.

  • /data → Dataset catalog with schema and downloads.
  • /sources → The source registry: tier, refresh cadence, limitations.
  • /methodology → Network-wide sourcing and corrections policy.
  • /chain → Snapshot integrity and witness co-signatures.

Snapshot: 2026-05-25 · Source: CMS NPPES weekly full-replacement file · source registry

Compliance posture

Methodology · Corrections log · Editorial policy

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Sourced from federal agencies. Fonteum, Inc., Delaware C-corp. © 2026.

Fonteum is a US healthcare provenance registry.

About Fonteum ›

Fonteum is a US healthcare provenance registry that publishes signed, chain-of-custody-attested research and data pages on Medicare, Medicaid, and federal regulator datasets, drawing from 22 federal source families across CMS, OIG, HRSA, AHRQ, and HHS.

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1,322,867 nurse-staffing records · CMS PBJ