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How it worksCatalogProvenanceWhy defensible

Data · Federal Sources

2,714,876 rows. 23 federal source families.

14 dataset pages — each with FHIR R4 resource, 14-tuple field-level provenance, and a published freshness cadence. U.S. Government Works.

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DatasetAgencySynced
Daily Nurse StaffingCMS2026-05-25
OIG ExclusionsHHS-OIG2026-05-01
SNF Ownership RecordsCMS2026-04-15
Care Compare Nursing HomesCMS2026-04-01
Care Compare Home HealthCMS2026-04-01
Care Compare HospiceCMS2026-04-01
Care Compare DialysisCMS2026-04-01
Provider of ServicesCMS2026-05-07
2,714,876 rows ingested·23 federal source families·14-tuple field-level provenance·FHIR R4 on every dataset

Published cadence

Every dataset refreshed on a documented schedule tied to CMS release dates.

Row-level provenance

14 provenance fields per value. Source, snapshot date, methodology, confidence — all survive export.

FHIR R4 resource

Every dataset is exposed as a USCDI v3 FHIR R4 resource for agent and EHR integrations.

How it works

Federal data → field-level provenance → your agent.

Every row Fonteum returns is traceable back to the exact federal release that produced it. No opaque pipeline. No synthetic fills.

01

Federal source pull

Inngest workers pull from CMS, HHS-OIG, HRSA, BLS, and BEA on each agency's published release cadence. Every pull is SHA-256 attested.

02

14-tuple provenance binding

Each field is bound to source, snapshot date, methodology version, confidence tier, and eleven more fields. All travel with exports and API responses.

03

FHIR R4 + CSV delivery

Every dataset is available as a USCDI v3 FHIR R4 resource and as a gzipped CSV with SHA-256 integrity header. Request access for the pilot API key.

All datasets

14 dataset pages.

CMS and HHS-OIG sources. Nursing facilities, provider performance, sanctions, hospital financials, and care quality.

Request access →Freshness ledger →
DatasetAgencyCategorySynced
Daily Nurse StaffingCMSNursing facilities2026-05-25
OIG ExclusionsHHS-OIGSanctions and exclusions2026-05-01
SNF Ownership RecordsCMSOwnership networks2026-04-15
Care Compare Nursing HomesCMSNursing facilities2026-04-01
Care Compare Home HealthCMSCare quality2026-04-01
Care Compare HospiceCMSCare quality2026-04-01
Care Compare DialysisCMSCare quality2026-04-01
Provider of ServicesCMSNursing facilities2026-05-07
Hospital Cost ReportsCMSHospital financials2026-05-01
Open PaymentsCMSProvider performance2026-04-30
QPP Individual ScoresCMSProvider performance2026-05-24
Care Compare ASCsCMSCare quality2026-04-01
PECOS Ordering & ReferringCMSProvider performance2026-05-01
Hospital Price Transparency EnforcementCMSHospital compliance2026-06-06

Row-level provenance on every field

A 14-tuple provenance contract.

Every value Fonteum returns is bound to fourteen provenance fields. All fourteen survive export — a buyer who receives a Fonteum record can trace any field back to the exact federal release that produced it.

Full methodology →SHA-256 integrity check →
01

Federal source pull

SHA-256 attested snapshot of the raw agency file. Snapshot date and file hash recorded in ingestion_runs.

02

Column → field mapping

Every source column is mapped to a canonical field with a typed parser. Mapping version is pinned in _methodology.

03

14-tuple binding

Each field gets _source, _snapshot, _confidence, and eleven more. All fields travel with FHIR meta.tag and CSV export.

Why it's defensible

The moat compounds with every source family.

Federal data is public. The moat is the engineering layer on top of it — provenance depth, schema consistency, and FHIR compatibility that only compound over time.

⛓

Cross-source joins

CCN identity backbone (CMS POS) lets us join nursing home, dialysis, hospice, and staffing data deterministically. Competitors who start fresh pay 18+ months to get there.

🔬

Methodology versioning

Every column mapping is a versioned artifact. When CMS changes a schema, we ship a new methodology version — prior snapshots remain traceable to the version that produced them.

📡

FHIR R4 from day one

USCDI v3 resource mapping for all five provider resource types. Agents and EHRs that speak FHIR get a zero-translation integration path.

📦

Public-domain foundation

U.S. Government Works upstream. No NMLS. No state bar. No ABMS. No data that can be yanked by a licensor. The raw data is yours too — what you're licensing is the provenance layer.

Get access

23 federal sources. Row-level provenance. Ready for your agent.

Pilot access is operator-approved. Reviewed within one business day. No charge during the pilot period.

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

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