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FonteumThe Graph

The capability layer

APIREST + bulk accessMCP serverCallable by AI agentsFHIR R4 APIBulk exportAttestation & audit packReconciliationSource-vs-source diffsEntity graphSnapshotsPoint-in-time, bitemporal

By use case

Exclusion & sanctions screeningCredentialing & provider-data enrichmentAudit evidence & defensible programsProvider data for AI / RAGM&A & network diligence

By buyer

Compliance & riskDevelopers & AI teams

The differentiator

Coverage & sourcesThe catalogFreshnessMethodologyCare CompareFacility qualityBrowse all datasets →
Research

The dev on-ramp

DocsAPI referenceMCPQuickstartStatusChangelogSDKs & integrations
Pricing
Sign inTry the FHIR sandbox →Request access →

Platform

APIMCP serverFHIR R4 APIBulk exportAttestation & audit packReconciliationEntity graphSnapshots

Solutions

Exclusion & sanctions screeningCredentialing & provider-data enrichmentAudit evidence & defensible programsProvider data for AI / RAGM&A & network diligenceCompliance & riskDevelopers & AI teams

Data

Coverage & sourcesFreshnessMethodologyCare CompareBrowse all datasets →
Research

Developers

DocsAPI referenceMCPQuickstartStatusChangelogSDKs & integrations
Pricing
Sign inTry the FHIR sandbox →Request access →

GUIDES · TOPICAL PILLARS

Four guides to provable healthcare data.

Each guide is a topical home that routes to the studies, datasets, glossary terms, and use-case pages behind one question. Start with the pillar closest to your job, or browse the data catalog and the research bureau.

Request accessScreen a roster →

The pillars

Pick the topic, follow it to every page beneath it

Pillar · Provider data

Healthcare provider data

Where U.S. provider data comes from — NPPES, PECOS, taxonomy, and the federal source families behind every NPI — and how it resolves into one graph.

Open the guide →
Pillar · Screening

Exclusion & sanctions screening

The cross-vertical hub: OIG LEIE, SAM.gov, and state Medicaid lists for healthcare, plus federal-contracting debarment — screened, dated, and traced to source.

Open the guide →
Pillar · Credentialing

Provider credentialing data

The federal records behind a credentialing file — NPI, Medicare enrollment, taxonomy, and exclusion status — and how to pull them from one API.

Open the guide →
Pillar · AI & RAG

Healthcare data for AI / RAG

How to ground an LLM or agent in citable provider data — over MCP, FHIR R4, and bulk export — with a source chain every answer can point back to.

Open the guide →
START HERE

Resolve, screen, and attest on public federal data.

Pick a guide above, or request access to call the API and pull a signed, source-traced record.

Add Fonteum to your agent →Request pilot access

Built on the authoritative federal record

The primary sources, named on every page.

These are the federal agencies whose public datasets Fonteum ingests and attributes — the issuing authorities, not customers or partners. Every figure on the site links back to one of them.

  • CMS
  • HHS-OIG
  • HRSA
  • FDA
  • NLM
  • NUCC
  • Census
  • BLS
  • BEA

See the full source registry, with license and refresh cadence for each →

Reproducible by design

Every figure traces to its federal source.

14-tuple provenance

Every rendered fact ties to a source URL, dataset ID, snapshot date, row key, and SHA-256 — the full chain-of-custody record.

Reproducible SQL

Each study ships the exact query behind its figures, run against the cited federal snapshot. Re-run it yourself.

Daily reconciliation

Published counts are reconciled against the upstream federal datasets on a daily cadence, with drift logged.

Named medical review

Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.

Read the full provenance and attestation methodology →

Two doors

Use the free API and open data

Query providers, facilities, sanctions, and quality scores — each field carrying its federal source. Self-serve, no call to start.

Explore the API →Browse the data catalog →

Talk to us

Managed pilots, enterprise terms, and audit-ready, signed attestation packages for compliance, risk, and research teams.

Talk to us →
Fonteum
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Research & guides
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Trust & legal
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Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.

© 2026 Fonteum LLC. All rights reserved.

·hello@fonteum.com

The U.S. healthcare graph AI can cite — every fact carries its source.

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The substrate, by the numbers

9.2Mgraph entitiesProviders, organizations, owners, and facilities
15.7Mlinked identifiersNPIs, CCNs, LEIs and more, resolved to entities
5Mgraph edgesSource-attested relationships between entities
44federal source familiesDistinct CMS, OIG, HRSA, FDA and peer datasets
35dataset pagesCitable, downloadable /data catalog pages
67reproducible studiesEach shipping the SQL behind its figures