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 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.
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.
The substrate, by the numbers
The federal OIG LEIE covers exclusions from federal health programs. State Medicaid programs keep their own exclusion lists — and many state-excluded providers never appear on the federal list. Of 5,124 NPI-bearing providers on the state Medicaid exclusion lists Fonteum mirrors today, 3,388 (66%) do not appear on the federal LEIE by NPI — the exact gap a federal-only screen returns as a false clean. Aggregate-level, framed as a screening aid; cross-check any single record against the publishing agency.
Overlap is matched by NPI. The federal LEIE records an NPI on only a minority of its entries (entity records typically lack one by source convention), so the federal-only figure is a floor on the true overlap, not a ceiling — the state-only share is therefore a conservative estimate of what a federal-only NPI screen misses.
22,602 state Medicaid exclusion records across 10 states · captured 2026-06-14. Each state page mirrors the published list as a screening aid, with NPI-matched records linked to their provider profile.
| Washington | 244 | 210 |
| Mississippi | 193 | 140 |
| Montana | 174 | 42 |
| North Carolina | 166 | 152 |
Coverage expands as additional state Medicaid exclusion lists are onboarded. A state with too few records to substantiate a dataset is held back from the index until its list is fully captured.