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Customers

source-linked facts

We don’t have customer logos. We have the primary sources.

The database snapshot supplies the displayed count. Source-file hashes are reported where present; deterministic fact-to-signature linkage is not claimed.

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111
sources integrated
90
source datasets with data
79
source datasets with positive-data observations within 45 days
13.4M
ingested entity records
9M
providers in the graph
324,126
active federal exclusions

Platform coverage snapshot · as of 2026-07-22 · full breakdown →

Snapshot observation: 90 with data · 79 with positive-data observations within 45 days · 111 integrated

  • NPPES
  • CMS PECOS
  • OIG-LEIE
  • SAM.gov
  • NUCC
  • HRSA HPSA
  • CMS Care Compare

Representative source families only, not the full registry or a statement that every page uses one of these sources. Authority, loaded coverage, freshness, and completeness are source-specific.

Don’t take our word for it

When an attested snapshot exposes an envelope, the page links its source archive, SHA-256, and available Ed25519 chain-head metadata.

Re-check it yourself

Look up a snapshot id to see the source, date, digest, and chain fields that record actually returns. Digest comparison checks archive bytes; signature status is shown separately. No account needed.

snapshot field guide
source shown when returned
date saved shown when returned
sha-256 shown when returned
chain signature shown only when returned

Or run the full flow at /verify · curl /verify/<id>

Citable by machines

Our first “users” are the answer engines. The published crawler policy allows GPTBot, ClaudeBot, and PerplexityBot on routes that are not otherwise disallowed.

  • ✓ Schema.org Dataset JSON-LD on supported dataset pages
  • ✓ llms.txt + ai-summary.json published
  • ✓ Machine-readable agent card at /.well-known/agent.json
  • ✓ MCP server for direct agent grounding

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Where we are, honestly

Pilot intake is open. Fonteum does not currently hold SOC 2. We publish customer evidence as pilots close — and when we do, it will be as re-checkable as everything else here. Until then, the proof is the product.

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What’s on file, by the numbers

Platform snapshot · 2026-07-22

13.4Mproviders & companiesProviders, organizations, owners, and facilities on file
26.2Msource-linked factsSource-linked field facts in the dated platform snapshot
90sources with dataDistinct snapshot source IDs with at least one positive record count
79fresh sourcesDistinct source IDs whose latest positive-data snapshot falls within the preceding 45 days
111sources integratedActive registry rows; integration does not establish a load
13state Medicaid jurisdictionsDistinct states represented in the state-exclusions serving table

Integrated, with-data, and fresh-observation counts are separate. No platform-wide source-completeness count is published. Completeness is source-specific and must be evaluated against the named source's expected scope. State coverage is a separate jurisdiction measure.

Source authority is record-specific

Use the issuer named on the record.

Fonteum spans federal, state, and global public publishers. A source page or returned record identifies its issuer and dataset where that metadata is available. A platform registry count does not assign every page to one authority or establish loaded, fresh, or complete coverage.

Browse source records and their stated limitations →

Reproducible by design

Inspect the evidence each published figure actually supplies.

Source and date

Research pages expose the named public file and observation date where those fields are available. Source-file SHA-256 coverage is separate; facts do not currently link deterministically to signatures.

Available derivation

Studies with a retained release and committed derivation link the SQL or method used. Other studies state the evidence and reproduction limits they actually have.

Daily observations

Dated table row-count observations can detect local drift. They do not imply that an upstream publisher released or Fonteum ingested new data that day.

Named medical review

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

Read the full provenance and attestation methodology →

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