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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

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The differentiator

Coverage & sourcesThe catalogFreshnessMethodologyCare CompareFacility qualityBrowse all datasets →
Research

The dev on-ramp

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

Changelog

Changelog.

What we shipped, week by week. RSS feed →

2026-W22

May 25, 2026
#347Foundation Surgery: framer-motion ban + ProvenanceLink consolidation + canonical lint
#346Dedup architectural fix: scope dataset_snapshots dedup to (dataset_id, captured_at)
#345Clock-skew fix for snapshot replay
#3448→14 tuple doctrine compliance sweep
#343Snapshot replay API + public /snapshots index
#342R2 historical backfill scaffolding
#341dataset_snapshots 14-tuple schema
#340pecos_providers foundation
#312Design-discipline pipeline: post-tool hook, v6-design skill, slash commands, lint
#311Legacy page deletions + gate-patch for 5 stranded launch-gate checks
#310Migrate gate references to canonical surfaces; repoint launch gate
#309Flip production homepage to v6 design chassis; delete /preview/v6
#308Wave-flow automation: --brief flag + wave-cleanup.sh
#307Research hub inventory: publish/cull 40 research pages to canon
#306Delete /solutions orphan route
#305Tiered pricing surface: Starter $2K/mo · Pro $8K/mo · Enterprise
#304SOC 2 timeline visibility + AI-citation surface + federal-only moat doctrine
#303Care compare + provider routes: hero copy audit sweep
#302Marketing pages hero copy audit — 4Z.4a
#301/sources hero copy audit
#300/research hero copy audit
#299/api hero copy audit
#298CMS Care Compare Dialysis + ASCs DB ingest (Sprint 1 #8 + #9)
#297Formalize parallel-wave worktree convention via worktree-spawn.sh
#296DOCTRINE.md §4 sync — remove studies from source family enumeration
#295AGENTS.md cleanup: dedup Sprint 2 deferrals, add HCRIS/Open Payments
#294YC polish: locked H1 + canonical CTA enforcement across all marketing pages
#293Tier 4 secondary page sweep — canonical source-family count
#292AGENTS.md dedup
#291Freshness-watchdog registry + 2 env var docs
#290Trust backend: sandbox HMAC + real CmpExposureCalculator + freshness watchdog
#289Sitewide source-family copy sweep per AGENTS.md §6
#288Correct source-family count per AGENTS.md §6
#287Test stabilization: 1048/1048 gate, 0 test failures
#286Tier 3 body copy sweep: doctrine + pronouns + structural data (11 brand pages)
#285Performance + AI Discoverability improvements
#284Cross-model ambiguity sweep: H2s, eyebrows, CTAs
#283Hero ambiguity sweep: 6 swaps + 1 SQL fix (4-model council)
#282Backend truth: 5 flagship endpoints wired to Supabase
#281H1 swap: 'callable by agents' → 'callable by AI agents'

2026-W21

May 18, 2026
#279QA + polish pass: doctrine clean, gate repair, /data route fix
#278Rebuild /trust, /methodology, /audit-pack, /data, /api
#2774 buyer routes + 6 AI-supporting pages (the moat)
#276Federal Monograph homepage rebuild (F1-F8 fixes + design system + SignatureMoment)
#273AI discoverability foundation v2
#272Live FHIR demo server component on homepage
#271ScholarlyArticle JSON-LD on 4 dedicated research pages
#270Pricing nav, hero CTA, pricing H1+contrast, homepage trust panel
#269§ sweep, FL DBPR removal (9 files), attestations guard, sources count
#268FHIR docs base URL fix + verified 4-step quickstart
#267Purge OwnListed pivot narrative from about, contact, dermatology pages
#266/coverage + /directories redirect to /data-platform; add /compare index
#265Replace 26,417 legacy banner with accurate federal counts
#264Organization JSON-LD on /about; 22-source ledger
#263B2B nav with dropdowns + 4-column footer
#262Purge old-model OwnListed framing from brand-hub pages
#261Remove Yelp-era consumer disclaimer from ComplianceFooterBand
#260Purge GBP sources and pivot narrative from /trust and /methodology

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

© 2026 Fonteum LLC. All rights reserved.

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
65reproducible studiesEach shipping the SQL behind its figures