Our record beside the raw source — field by field.

Entity graph — canonical entities behind these records

Beyond the CCN→NPI crosswalk above, every identifier resolves to one canonical entity in the entity graph (entity-graph/v1). Counts below are live planner estimates (entity, identifier, and edge totals — marked ≈; the probabilistic-link tally is exact when shown). All current links are deterministic exact-identifier joins at confidence 1.000. Person, organization, and facility entities and payment-relationship edges are populated from the deterministic backfill; the remaining edge classes (operates / owns / member_of_system / ownership) land with later operator-run lanes and read zero until then. Resolve any identifier via GET /api/v1/entity/resolve?scheme=npi&value=….

Sampling methodology

Version

reconciliation-differ/v2

Join key

CMS Certification Number (CCN) — exact 6-digit match, no normalization

Universe

Hospitals present in both the CMS Care Compare Hospital General Information snapshot (2026-05-07) and the CMS Healthcare Cost Report Information System (HCRIS) database, joined by CCN. 5,208 of 5,426 Care Compare hospitals (96.0%) have an HCRIS cost report.

Sample

100 hospitals drawn from the 5,208-hospital join universe. Sorted by CCN ascending; every 52th record selected. Deterministic across deploys — same ordering every render.

Sources

Limitations

• Sample is deterministic, not random. Position in the universe is fixed by CCN sort order, so the distribution may over-represent CCN ranges (state prefixes) with dense HCRIS coverage.
• HCRIS fiscal years vary by hospital (not calendar year). The 'latest_fiscal_year_end' column reflects each hospital's own reporting period.
• A CCN present in HCRIS but absent from the Care Compare snapshot indicates the hospital has not published quality data via Care Compare in the current release — this is not a Fonteum data gap.
• No fuzzy or probabilistic matching is performed in the CCN join. Hospitals that appear in both files under slightly different identifiers are not joined.
• The Entity Links column is tiered: deterministic links (confidence 1.000) come from federal files that carry both CCN and NPI on the same row; probabilistic name/state candidates that have not passed operator review are labeled 'candidate · unreviewed' with their real confidence. Probabilistic links below confidence 0.95 are excluded from this page and the entity API.
• The entity-graph counts reflect the deterministic backfill: person, organization, and facility entities with exact-identifier links at confidence 1.000, plus payment-relationship edges (edge type 'pays', sourced from CMS Open Payments) at confidence 1.000. The remaining edge classes (operates / owns / member_of_system / ownership) are pending operator-run backfill lanes, so those counts read zero until then. All current links are deterministic; probabilistic links, when they land, will always display their real matcher confidence.

Frequently asked questions

What is a reconciliation differ?

A reconciliation differ compares the same entity — here, a Medicare-certified hospital — across multiple federal data files to show what you gain, and what you miss, when you use each file alone. Fonteum's differ joins CMS Care Compare (quality and identity data) with HCRIS (financial data) by the 6-digit CMS Certification Number, then shows freshness, field coverage, and provenance side by side for each hospital.

How are hospitals sampled in this table?

100 hospitals drawn from the 5,208-hospital join universe. Sorted by CCN ascending; every 52th record selected. Deterministic across deploys — same ordering every render.

What is the CCN match rate between Care Compare and HCRIS?

5,208 of 5,426 Care Compare hospitals (96%) have a matching HCRIS cost report when joined by exact CCN. The remaining 218 hospitals have quality data in Care Compare but no current HCRIS cost report, typically because they have not yet submitted or been processed by CMS in the current HCRIS release.

Is probabilistic or fuzzy matching used?

The headline CCN join uses only exact 6-digit matches. The entity-resolution crosswalk (column 5) is tiered: 5,611 deterministic links (confidence 1.000) from CMS Care Compare ASC, which publishes NPI alongside CCN. Each match method's real confidence range is shown in the breakdown above — deterministic links are never blended with probabilistic ones.

What is the entity-resolution column?

The Entity Links column shows the CCN → NPI crosswalk for each hospital, by tier. 5,611 links are deterministic (confidence 1.000) from CMS Care Compare Ambulatory Surgical Centers. Hospitals without a crosswalk entry are marked "Unlinked".

Fonteum is a US public-records evidence platform spanning healthcare, federal procurement, sanctions and watchlists, federal enforcement, intellectual property, securities filings, and global company registers. Production registry status is reported separately from loaded and fresh coverage. Dated platform counts come from the public platform-stats snapshot; source-file hashes are reported where present, and deterministic fact-to-signature linkage is not claimed.

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