Skip to content
FonteumThe Graph

By use case

Exclusion & monitoring (self-serve)Free roster screen — no accountExclusion & sanctions screeningCredentialing & provider-data enrichmentAudit evidence & defensible programsProvider data for AI / RAGM&A & network diligence

By buyer

Compliance & riskJournalists & newsroomsDevelopers & AI teams

By industry

HealthcareProviders & facilitiesSanctionsOFAC / EU / UK / UN / OIG / SAMFederal contractingSAM · USASpending · FAPIIS

The capability layer

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

The differentiator

Coverage & sourcesThe catalogFreshnessMethodologyCare CompareFacility qualityCompare grounded answersBrowse all datasets →
Research

The dev on-ramp

DocsAPI referenceMCP — connect your agentOne-paste installFHIR sandboxLive API surfaceQuickstartStatusChangelogSDKs & integrations
Pricing
Sign inFree roster screen →Get a signed certificate →

Solutions

Exclusion & monitoring (self-serve)Exclusion & sanctions screeningCredentialing & provider-data enrichmentAudit evidence & defensible programsProvider data for AI / RAGM&A & network diligenceCompliance & riskJournalists & newsroomsDevelopers & AI teamsHealthcareSanctionsFederal contracting

Platform

APIMCP serverFHIR R4 APIBulk exportAttestation & audit packReconciliationGrounded answersEntity graphSnapshots

Data

Coverage & sourcesFreshnessMethodologyCare CompareCompare grounded answersBrowse all datasets →
Research

Developers

DocsAPI referenceMCP — connect your agentFHIR sandboxQuickstartStatusChangelogSDKs & integrations
Pricing
Sign inFree roster screen →Get a signed certificate →
Data Platform/Audit Pack/Nursing-Home Quality by State (CMS Care Compare)
AUDIT PACK · v2026.05.0

Nursing-Home Quality by State (CMS Care Compare)

State-level rollups of CMS Care Compare nursing-home overall quality ratings.

Methodology versionv2026.05.0
Last snapshot2026-04-01
Refresh cadenceQuarterly (matches CMS Care Compare release cadence).
Spatial resolutionFacility (point) + state rollups
Records14,000 facilities
State coverage51 states + DC
Download Audit Pack (PDF) →Download Audit Pack (JSON) →Free. No login. Versioned. Cite in your audit response.

Looking for the public per-dataset methodology page (citations + version history) to link from your product? /methodology/nursing-home-quality →

What's in this pack

  • Source families: CMS Care Compare datasets (public)
  • Spatial resolution: Facility (point) + state rollups.
  • Temporal coverage: CMS quarterly Care Compare release (current snapshot 2026-04-01).
  • Refresh cadence: Quarterly (matches CMS Care Compare release cadence).
  • Scope: 14,000 facilities across 51 states + DC. Snapshot date: 2026-04-01.

Per-field provenance map

Every field surfaced from this dataset, with source attribution, refresh cadence, and confidence score. Verbatim source values are confidence 1.0; Fonteum-derived metrics (per-100k, ranks) are 0.95 with the derivation logic in the reproducibility statement below.

FieldSourceRefreshConfidence
facility_ccn
CMS Certification Number — facility identifier on the CMS dataset.
CMS Care Compare — Nursing Home CompareQuarterly1.00 ✓
state
Facility state (USPS code).
CMS Care Compare — Nursing Home CompareQuarterly1.00 ✓
overall_rating
CMS Five-Star Quality Rating (1-5) for the facility.
CMS Care Compare — Nursing Home Compare
CMS publishes its own confidence bands and known measurement caveats per the rating methodology.
Quarterly1.00 ✓
rating_date
CMS-published rating publication date.
CMS Care Compare — Nursing Home CompareQuarterly1.00 ✓

Reproducibility statement

A buyer should be able to rerun the methodology against the same public source data and reconcile counts. Discrepancies belong in the corrections log; we publish them when they arise.

1. Pull the CMS Care Compare Nursing Home Compare dataset from data.cms.gov/provider-data/dataset/4pq5-n9py.
2. Filter to records with non-null overall_rating.
3. Bucket by state (USPS code).
4. Compute per-state distribution: count, mean overall_rating, share at each star level.
5. Publish state rollups alongside the methodology link to the original CMS dataset.

CMS publishes quarterly; Fonteum snapshot follows the most recent CMS release.

Limitations

  • Each CMS measure carries its own published limitations; readers should review the CMS dataset documentation linked in the methodology for measure-specific caveats. We do not modify CMS's published measure values, only re-aggregate to state-level rollups.
  • Sampling-based measures (e.g. patient-experience surveys) carry confidence bands CMS publishes alongside the values. State-level rollups average across facilities and do not preserve those bands; for facility-specific decisions, reference the original CMS Care Compare record.
  • Date alignment: state rollups are computed from the CMS file's published reporting period, not the file release date. The reporting period typically lags the release date by 6-12 months per CMS convention.

Version history

  1. v2026.05.0 · released 2026-05-06
    Initial Audit Pack release. Methodology, provenance map, reproducibility statement, and limitations stack baselined.

Compliance Q&A

The most common questions a procurement / compliance officer asks during evaluation. Answers cite source links so the response can be lifted directly into your internal audit document.

Q: What is the source of these facility-quality measures?

CMS Care Compare datasets, published quarterly at data.cms.gov/provider-data/. CMS itself publishes the measure definitions, sampling methodology, and known limitations; Fonteum Research re-aggregates state-level rollups without altering the underlying measure values.

Reference: https://data.cms.gov/provider-data/

Q: When was this dataset last updated?

Snapshot date is published per dataset and aligns with the most recent CMS Care Compare release we have ingested. CMS publishes new files quarterly; our cadence matches.

Reference: https://fonteum.com/corrections-log

Q: Are CMS's own published limitations preserved?

Yes. Every limitation CMS calls out in the dataset documentation appears in our Limitations section verbatim or paraphrased with a link to the CMS source. We do not silently strip caveats.

Reference: https://fonteum.com/methodology#limitations

Q: Can I reproduce these counts independently?

Yes — the reproducibility statement above lists the exact CMS dataset(s) ingested and the per-state aggregation logic. A buyer can rerun the methodology against the same Care Compare release and reconcile counts.

Reference: https://fonteum.com/corrections-log

Q: What is the licensing scope of this data?

CMS Care Compare data is public-domain federal information. Fonteum's aggregated rollups are licensed under our editorial-policy terms.

Reference: https://fonteum.com/terms

Need a customer-scoped Audit Pack?

Pilot, Standard, and Enterprise customers receive Audit Packs scoped to their delivery cadence and contracted dataset list. The methodology version is pinned to the snapshot delivered, so the artifact is durable across the contract period. Contact pilot@fonteum.com or request access at /pilot-intake.

Open the parent research study → · ← All Audit Packs

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 count checks

Published counts are checked 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
Platform
Platform overviewAPIMCP serverFHIR R4 APIBulk exportAttestation & audit packReconciliationGrounded answersEntity graphSnapshots
Solutions
All solutionsExclusion & sanctions screeningCredentialing & enrichmentAudit evidenceProvider data for AI / RAGM&A & network diligenceCompliance & riskJournalists & newsroomsDevelopers & AI teams
Data & sources
Coverage & sourcesBrowse all datasetsState Medicaid exclusionsFreshnessMethodologyCare CompareSanctions screeningOIG LEIE listOwnershipStaffingDeficienciesSpecial Focus Facilities
Federal contracting
OverviewAwards during active exclusionFederal debarment scorecardProcurement questionsContractor lookup8(a) certification guide
Developers
Developer hubDocsAPI referenceQuickstartStatusChangelogSDKs & integrationsWebhooks
Research & guides
Research hubGuidesHealthcare provider dataExclusion & sanctions screeningProvider credentialing dataHealthcare data for AIHospital margin gapProvider access gapsGlossaryComparisonsGrounded data vs LLM answersCitationsManifestoWhy Fonteum
Company
AboutPressCustomersPricingContactEditorial policyCorrections
Trust & legal
TrustTrust markQualitySecurityPrivacy policyTerms of serviceAPI & MCP termsMedical disclaimer

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

© 2026 Fonteum LLC. All rights reserved.

·hello@fonteum.com

The U.S. public-records graph AI can cite — every fact carries its source.

Every fact Fonteum serves carries a signed, re-checkable trust mark — source, as-of date, and an Ed25519 signature travel with the data. Re-check any fact at fonteum.com/verify · the trust-mark standard (W3C Verifiable Credentials 2.0, C2PA-aligned).
Request access→

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
70reproducible studiesEach shipping the SQL behind its figures