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
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Query providers, facilities, sanctions, and quality scores — each field carrying its federal source. Self-serve, no call to start.
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The substrate, by the numbers
NPPES (NPI registry)
94.2%
Completeness 99.1 · Consistency n/a
Match rate n/a · Timeliness 89.3
Updated Jun 15
OIG LEIE exclusions
98.1%
Completeness 99.8 · Consistency n/a
Match rate 98.1 · Timeliness 96.4
Updated May 26
CMS PECOS PPEF
88.0%
Completeness 97.4 · Consistency n/a
Match rate n/a · Timeliness 78.6
Updated Apr 30
CMS Open Payments
83.8%
Completeness 96.2 · Consistency n/a
Match rate n/a · Timeliness 71.4
Updated Apr 15
CMS Care Compare
92.2%
Completeness 98.7 · Consistency n/a
Match rate n/a · Timeliness 85.7
Updated May 25
Methodology
The composite is a weighted mean of four sub-metrics — completeness, consistency, match rate, and timeliness. Versioned, peer-reviewable, snapshot-anchored.
For each source, the median proportion of public-displayable required fields that are non-null and non-empty across rows in the latest snapshot. Snapshots over 100k rows are sampled to 10k uniformly — see methodology.
| Source family | Last snapshot | Row count | Median field completeness |
|---|---|---|---|
| NPPES (NPI registry) | 7.8M | 99.1% | |
| OIG LEIE exclusions | 68K | 99.8% | |
| CMS PECOS PPEF | 2.5M | 97.4% | |
Where two independent federal feeds describe the same NPI, do they agree? Each rate is the share of NPIs whose normalized value matches across both sources. The denominator is the set of NPIs present in both snapshots with a non-null value on each side.
No cross-source consistency rate is published at this snapshot. The originally-specified NPPES ↔ PECOS checks join enrollment-specialty and enrollment-status fields that are not present in the provider schema, so no reproducible figure exists — and we do not publish a number we cannot recompute. The composite below is renormalized over the families that are published. See the methodology for the full correction note.
Wall-clock hours between an upstream publication and Fonteum ingesting it. Computed over the trailing 90 days; the p95 number is the worst-case ninety-fifth percentile, not a synthetic SLA.
| Source family | Median lag | p95 lag | Window |
|---|---|---|---|
| NPPES (NPI registry) | 18 h | 64 h | 90 d |
| OIG LEIE exclusions | 6 h | 22 h | 90 d |
| CMS PECOS PPEF | 36 h | 96 h | 90 d |
| CMS Open Payments | 48 h | 120 h | 90 d |
| SAM.gov entities | 24 h | 72 h | 90 d |
| HRSA HPSA shortage areas | 24 h | 72 h | 90 d |
| CMS Care Compare | 24 h | 96 h | 90 d |
| BLS OEWS wages | 72 h | 168 h | 90 d |
| BEA Regional | 72 h | 168 h | 90 d |
Fonteum's archived copy of the OIG LEIE CSV matched the SHA256 OIG publishes alongside the file in 51 of the last 52 weekly snapshots — a 98.1% byte-level agreement.
98.1%
51 / 52 weekly snapshots · Mondays
The composite is a weighted average — 35% completeness, 30% consistency, 20% timeliness, 15% OIG LEIE byte match — pinned at methodology version quality/v1. A family with no reproducible value (currently consistency) is dropped and the remaining weights are renormalized, so the headline never absorbs a missing family as a zero or leans on a placeholder number. Every number on this page has its formula and denominator published.
Machine-readable twins: /quality.json (schema.org Dataset) · /api/v1/quality · Methodology pointer: https://fonteum.com/quality/methodology
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| CMS Open Payments |
| 13.4M |
| 96.2% |
| SAM.gov entities | 1.2M | 95.3% |
| HRSA HPSA shortage areas | 15K | 99.5% |
| CMS Care Compare | 42K | 98.7% |
| BLS OEWS wages | 4K | 99.8% |
| BEA Regional | 3K | 99.9% |