CMS SNF All Owners (PE / REIT / Chain Layer)

How this source shows up on Fonteum.

Drives the brand-hub `/ownership` surface. Direct backbone for the published flagship study at /research/private-equity-nursing-home-ownership-analysis. Fonteum surfaces missingness via DataAvailabilityState: OWNERSHIP_PCT_MISSING — the gap is the data product.

Research and data questions this source supports.

• 01Map private equity ownership of nursing homes by identifying affiliated entity chains across the SNF All Owners dataset.
• 02Build an ownership concentration study showing what percentage of nursing home beds are controlled by the top 10 ownership chains.
• 03Cross-reference SNF All Owners data with PBJ staffing and CMS Care Compare star ratings to analyze whether ownership type predicts quality.
• 04Support M&A diligence on nursing home chains by enumerating all facilities under a specific affiliated entity ID.
• 05Power a policy research study on private equity in nursing home ownership using publicly available CMS ownership disclosure data.

Dataset size: 15,600+ SNF ownership records (quarterly snapshot)

Per-field display contract.

Every field below has a `display_allowed` flag in the §94 provenance schema. Write-locked fields are captured to provenance for audit but never rendered on profile pages.

What we can’t infer from this source.

• Ownership percentages missing for 82.40% of top-10-chain owners + 55.21% of all U.S. facility owners (Chen/Grabowski/Konetzka, Health Affairs March 2024).
• PE/REIT flags reflect voluntary CMS self-reporting; many facilities have not filed under the December 2025 revalidation suspension.
• Independent and CMS-derived PE-ownership estimates differ ~2.6× (PESP 13% vs. GAO 5%).
• 5% disclosure threshold creates structural undercounting for layered LLC ownership cascades.
• Fonteum does not fabricate, interpolate, or estimate missing ownership percentages.

Authority, license, refresh cadence.

What the source allows.

U.S. government public-domain works. PDC publishes the dataset at data.cms.gov with explicit redistribution rights.

What a single field looks like in the graph.

A worked example. Every field surfaced from this source carries this shape of provenance line — source · last checked · display rule · confidence (when applicable).

Official API, bulk download, and Fonteum endpoints.

Common questions about CMS SNF All Owners.

What is the CMS SNF All Owners dataset?

The SNF All Owners dataset is a CMS public disclosure of the ownership information for all Medicare- and Medicaid-certified skilled nursing facilities. Derived from PECOS (Provider Enrollment, Chain, and Ownership System), it includes the names and roles of all ownership entities — from individual owners to management companies to private equity holding structures — for each facility. CMS added the SNF All Owners file to improve transparency about nursing home ownership following Congressional scrutiny.

Why does CMS require nursing homes to disclose ownership?

The Affordable Care Act (ACA) §6101 expanded CMS's authority to require disclosure of ownership and management relationships in nursing facilities to improve accountability and quality oversight. Federal research has linked private equity ownership in nursing homes with lower staffing levels, higher deficiency citation rates, and higher short-term mortality in some studies. The SNF All Owners dataset operationalizes that disclosure requirement.

How do I identify private equity-owned nursing homes using this data?

Identifying private equity ownership requires tracing the Affiliated Entity ID field across multiple ownership layers — a nursing home may have a direct owner (management company), which is itself owned by a holding entity, which traces to a private equity fund. CMS provides the chain of ownership in the dataset. Fonteum's ownership surface at fonteum.com/ownership aggregates this chain for public query.

Where can I download the CMS SNF All Owners data?

CMS publishes the SNF All Owners dataset at data.cms.gov/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-all-owners. It is updated quarterly and is U.S. government public-domain data available as CSV downloads at no cost.

How does the Affiliated Entity ID work in SNF ownership data?

The Affiliated Entity ID is a CMS-assigned identifier that groups related nursing facilities under a common ownership chain. A private equity firm acquiring a chain of 50 nursing homes would have a single Affiliated Entity ID linking all 50 CCNs. The field enables quantification of chain size and concentration. Fonteum uses the Affiliated Entity ID to compute chain-level quality aggregations.

Where this source already shows up.

Research studies citing this source

• Federal Data Gap on Nursing Home Ownership Won't Close — and Fonteum Maps What CMS Doesn't →

Related sources in the graph

• /sources/cms-pos →
• /sources/cms-pbj →
• /sources/cms-care-compare →
• /sources/cms-nh-deficiencies →

Per-source methodology: /methodology/cms-snf-all-owners →

• /sources → The full source library — every dataset Fonteum cites.
• /data-provenance → The provider graph — pipeline diagram, source-family clusters, field-level provenance examples, display rules.
• /methodology → Network-wide sourcing, refresh cadence, and corrections policy.
• /editorial-policy → Independence, sourcing, conflicts, corrections, retractions.