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
| Dataset ID | cms-nppes |
| Captured At | 2026-01-01T00:00:00+00:00 |
| Source URL | https://download.cms.gov/nppes/NPPES_Data_Dissemination_January_2026.zip |
| Methodology Version | 2026.05.28 |
| Confidence | 1 |
| Data Availability | present |
| License | public_domain |
Run this command and compare the SHA-256 output to the expected value below.
curl -L "https://fonteum.com/api/snapshots/cms-nppes/2026-01-01" | sha256sum
2625999a2b1b227fb798f645e06ba42575f68ae47e819475256dd07711f4629b| Record Count | — |
| Archive Size | 1.03 GB |
| SHA-256 | 2625999a2b1b227fb798f645e06ba42575f68ae47e819475256dd07711f4629b |
| Created At | 2026-05-28T06:05:48.304147+00:00 |