THE PROVABLE PUBLIC-RECORDS PLATFORM
Public records you can prove.
Fonteum turns scattered U.S. government records into one signed, source-traced API — replay any record exactly as it stood on any past date. Proof you can hand an auditor, not data you take on faith. 9M+ healthcare providers live; federal contractors next.
OIG & SAM exclusion screening · no account
REST · FHIR R4 · MCP
✓ No credit card✓ MCP-ready✓ Bitemporal
Sourced from 44 federal source families
- NPPES
- CMS PECOS
- OIG-LEIE
- SAM.gov
- NUCC
- HRSA HPSA
- CMS Care Compare
- State boards
✓Every field signed & source-dated✓ Point-in-time reproducible✓ Updated daily Fonteum does not currently hold SOC 2
NPI · PECOS · OIG-LEIE exclusions · CMS Care Compare · HRSA HPSA
Most data asks you to take it on faith — you can’t re-check it, re-run it, or defend it in an audit. Fonteum is built the opposite way: every record signed, traced to its source, and reproducible to the day. Don’t trust us. Re-check us.
Not a black box.
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
Every record traceable to its government source.
44 federal source families resolved into one graph. Click the number to inspect its 14-field provenance record.
Browse the full source registry →Or see a full reconciliation, field by field: See the reconciliation proof →
One query. One defensible record.
A developer queries it; a compliance team defends it. The same resolved record carries its government source on every field.
Record resolution · NPI 1689603763
- NPPESregistry identity
- OIG-LEIEexclusion screen
- CMS-PECOSMedicare enrollment
Why not just download NPPES yourself?
| 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 |
Built for teams that need a citable record.
Data that can be cited, audited, and produced in discovery is more valuable than data that can only be queried.
AI & data teams
Wire federal provider records into your agent, RAG pipeline, or data product. FHIR R4 endpoints. MCP server. Row-level provenance on every response.
See how →Compliance & risk
Screen sanctioned providers before they enter your network. OIG-LEIE + PECOS enrollment + facility quality scores in one API call.
See how →M&A diligence
Audit a target's provider relationships and facility quality standing with data traceable to the primary government record.
See how →Why it’s hard to replicate.
Building on federal sources is straightforward. Building a signed, time-stamped, entity-resolved graph across 44 of them is not.
One ID per entity.
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.
Signed provenance.
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.
Point-in-time history.
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.
AI-native from the start.
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.
Start with the government record.
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