ABOUT
A federal-data research bureau for the AI era
Fonteum is a US healthcare provenance registry that publishes signed, chain-of-custody-attested research and data pages on Medicare, Medicaid, and federal regulator datasets, drawing from 44 federal source families across CMS, OIG, HRSA, AHRQ, and HHS.
When a model reasons about a hospital, a physician, or a patient population, it usually does so over an opaque data lake it cannot cite. The result is healthcare answers that sound authoritative and are quietly wrong: a closed facility marked open, an exclusion that was lifted years ago, a specialty inferred from a stale aggregator. The cost of that error is not a bad search result. It is a clinical or financial decision made on a number nobody can trace. Agents do not need another aggregator. They need a citation.
Fonteum resolves every claim over 44 federal source families, each value snapshot-pinned to the exact dataset release it came from, assigned a DOI so it can be cited the way a paper is cited, and signed so the snapshot cannot be silently altered. The same federal record is public to everyone; the moat is not access. The moat is reproducibility — the ability to hand any reader, regulator, or downstream agent the exact path from a published claim back to the byte it was drawn from.
We do not sell the data. The federal record belongs to the public. What we sell is the proof: a fourteen-field provenance contract on every value, a methodology published in full and version-pinned, and a signed snapshot chain so any claim can be reproduced by someone who has never spoken to us. That is the wedge. Anyone can scrape a federal file. Almost no one can show their work.
Every claim is reproducible
We publish the methodology, version every snapshot, and assign DOIs so any figure can be cited and re-derived from its source.
Every source is federal
We do not aggregate proprietary or scraped data. We resolve over public federal records: NPPES, OIG LEIE, CMS PECOS, CMS Care Compare, and CMS Open Payments, plus HRSA, BLS, and BEA.
Every response is signed
Cryptographic attestation via SLSA L3 and SHA-256 snapshots, so an agent's citation can be audited downstream.
Jennifer Montecillo, MD
Co-Founder & Head of Research · press@fonteum.com
Jennifer Montecillo, MD, co-founded Fonteum and leads its research and medical-editorial work. A physician trained at Gullas College of Medicine, she moved from clinical training into healthcare-data research — the discipline of turning the government’s scattered, hard-to-trust health datasets into something a researcher, journalist, or clinician can actually rely on.
At Fonteum she owns the standard every study and data page is held to: each figure traced to its exact federal source, claims framed as correlation rather than causation, and nothing published that can’t be reproduced from public data. Before a research study goes live, it passes her medical-editorial review — the reason Fonteum’s pages read as evidence, not commentary.
Her work is built on a simple conviction: the most important health data in the country is already public, but it’s effectively unusable — buried across dozens of federal agencies in inconsistent formats. Making it accurate, sourced, and citable is what turns open data into something the public, the press, and AI systems can trust.
Founder & CEO — leadership inquiries: press@fonteum.com
Press press@fonteum.com · Partnerships partners@fonteum.com · Pilot inquiries pilot@fonteum.com