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.
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.
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.
Talk to us
Managed pilots, enterprise terms, and audit-ready, signed attestation packages for compliance, risk, and research teams.
PUBLIC RECORDS · DATED · SOURCED · SIGNED
Every US exclusion, provider, and contractor record — plus the world’s major sanctions lists — free, each fact linked to its live government source with the date we captured it and a signed fingerprint. See what a record showed on a past date we’ve captured, not just today.
SHA-256 + Ed25519 · re-derive it yourself
OIG & SAM exclusion monitoring · no account
Screen every name you bill under against OIG, SAM, and state exclusion lists for billing and program-integrity — every check returns a signed, dated record you can hand an auditor.
Free roster screen →Public-records data your AI can cite — REST, FHIR R4, and an MCP server, every record traceable to its government source with row-level provenance on every response.
Build on the API →A dated, linkable government source behind every figure — cite source-traced datasets and see what a figure showed on any date we've captured, backed by an open methodology you can re-check.
Explore the research →Platform coverage · as of June 21, 2026
Source-traced U.S. government records, refreshed into dated snapshots. Every figure below traces to a signed source snapshot — re-check any of them, any day.
Most data tools ask you to trust the answer. We hand you the government’s — dated, sourced, and signed. Every record links to its live government source with the date we captured it and a signed fingerprint — so you can check it yourself.
Every data point carries 14 fields of provenance — source name, agency, snapshot date, SHA-256 hash, Ed25519 signature, and more. Audit-grade provenance that AI agents can cite and you can check in one click.
Number
68,055
A precise count from the source file — not an estimate, not an aggregate.
Government source
OIG-LEIE · oig.hhs.gov
The exact federal agency and dataset the number came from. Linkable.
Snapshot date
Ingested 2026-05-01
When we fetched it. Every record is time-stamped so you know what was true when.
Signature
SHA-256: a3f7… · Ed25519 attested
A cryptographic hash you can re-derive from the source file to confirm nothing changed.
Live example — click the number
historical records
44 federal source families resolved into one graph. Click the number to inspect its 14-field provenance record.
Browse the full source registry →A developer queries it; a compliance team defends it. The same resolved record carries its government source on every field.
Record resolution · NPI 1689603763
Building on federal sources is straightforward. Building a signed, time-stamped, entity-resolved graph across 44 of them is not.
The NPI is the federal record. Every licensed provider has exactly one. We build on it — not around it. Entity resolution across 44 source families resolves to the same spine.
Every field carries a SHA-256 hash and Ed25519 co-signature. You can re-derive the hash from the source file yourself. Nothing is taken on faith.
Each snapshot is dated, signed, and frozen. You can query what was true on any date — not just what is true now. Usable in litigation, compliance audits, and M&A due diligence.
MCP server for Claude agents. FHIR R4 endpoints for EHR integrators. Bulk NDJSON export for data teams. The same provenance record flows through every interface.
Pilot access covers the full provenance graph — NPPES, PECOS, OIG-LEIE exclusions, CMS Care Compare, HRSA HPSA, and more. Public data only. No PHI. No data-use agreement required to start.
For compliance & risk teams — signed, audit-ready records
✓Signed & re-derivable✓ Point-in-time✓ No credit card
Re-check it yourself
Every snapshot ships with a SHA-256 attestation. Look one up to get its source archive, published hash, and Ed25519 chain head — then re-hash the bytes yourself.
Or run the full flow at /verify · curl /verify/<id>
We don’t have customer logos yet. We have the primary sources.
Sourced from 66 government sources
✓ Refreshed daily counts over 1M are live planner estimates; enforcement datasets are exactFull coverage breakdown →platform-stats JSON →
Or see a full reconciliation, field by field: See the reconciliation proof →
| Capability | Raw NPPES download | Fonteum |
|---|---|---|
| Entity resolution across sources | DIY — match by hand | One resolved record per NPI |
| Field-level source + date | Not in the file | Every field traced to its source |
| Point-in-time / as-of history | Latest snapshot only | Any record as it stood on any date |
| Sanctions, enrollment, quality joined | Separate files, separate keys | One API call |
| Reproducible SHA-256 attestation | None | Re-derive the hash yourself |
The substrate, by the numbers