DATASET · CMS
280,207 ownership records.
Direct and indirect ownership stakes by entity, with effective dates and percentage interest.
Refreshed quarterly · FHIR Organization · SLA: Within 48h of quarterly CMS release
FHIR Organization · sample record
What a record looks like in the API response.
{
"resourceType": "Organization",
"id": "snf-owner-015009-entity-1",
"_source": "cms-snf-owners",
"_methodology": "snf-owners/v1",
"name": "Example SNF Operating LLC",
"extension": [{ "url": "ownershipPercentage", "valueDecimal": 0.51 }]
}Every record carries _source, _methodology, snapshot date, and confidence tier. These fields survive export and API delivery.
Sample query
One cURL call returns a provenanced record.
curl -H "Authorization: Bearer $FONTEUM_KEY" \ "https://api.fonteum.com/fhir/r4/Organization?_source=snf-owners" \ | jq '._source, ._methodology, .meta.tag'
Response includes the FHIR resource body plus Fonteum provenance metadata on every record.
Dataset stats
Dataset: SNF Ownership Records Agency: CMS Category: Ownership networks Records: 280,207 ownership records Last sync: 2026-04-15 Refresh cadence: Quarterly Freshness SLA: Within 48h of quarterly CMS release FHIR resource: Organization Methodology: /methodology
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