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CMS nursing home ownership data
CMS publishes an ownership record for every Medicare-certified provider. WhoOwnsCare has loaded 193,801 ownership relationships covering 10,280 distinct organisations and 16,019 providers across California, Texas, Florida, Ohio, Illinois, Pennsylvania and New York.
The files are free, public domain, and almost unusable in raw form: they name legal entities rather than companies, mix owners with lenders and vendors in one table, and provide no grouping at all.
What the files contain
Each row links a provider to a disclosed party: an organisation or an individual, with a role, an ownership percentage where applicable, and an association date. The role field is the important one and the most misread.
| CMS file | Filename | Published | Original |
|---|---|---|---|
| Home Health Agency All Owners | HHA_All_Owners_2026.07.17.csv | 2026-08-19 | Download from CMS |
| Home Health Agency Enrollments | HHA_Enrollments_2026.07.17.csv | 2026-07-27 | Download from CMS |
| Hospice All Owners | Hospice_All_Owners_2026.07.17.csv | 2026-08-19 | Download from CMS |
| Hospice Enrollments | Hospice_Enrollments_2026.07.17.csv | 2026-07-27 | Download from CMS |
| Skilled Nursing Facility All Owners | SNF_All_Owners_2026.07.31.csv | 2026-08-17 | Download from CMS |
| Skilled Nursing Facility Change of Ownership | SNF_CHOW_2026.07.17.csv | 2026-07-27 | Download from CMS |
| Skilled Nursing Facility Change of Ownership - Owner Information | SNF_CHOW_Owners_2026.07.17.csv | 2026-07-27 | Download from CMS |
| Skilled Nursing Facility Enrollments | SNF_Enrollments_2026.07.31.csv | 2026-08-17 | Download from CMS |
What the role field actually means
The roles that indicate control are direct and indirect ownership interests, general and limited partnership interests, and operational or managerial control. The roles that do not are security interests, mortgage interests and trustee roles — those are lenders — and the catch-all additional disclosable party, which covers vendors, management companies and professional advisers.
Treating the catch-all as ownership is the single most consequential error in this data. It once put a national accounting firm at the head of a 790-facility “chain” in our own build.
Known limitations
- No grouping. Nothing in the file says two entities are the same company.
- Individuals are disclosed by name, which is why we publish ownership at the organisation level only.
- Passive institutional shareholders appear as indirect owners of listed operators, which is true and useless.
- Operational/managerial control is self-reported and is filed against banks, auditors and, in at least one case, a newspaper company.
- Home health and hospice records carry no chain designation at all.
How WhoOwnsCare uses it
We normalise entity names, type every relationship as control, property, capital or service, then resolve organisations into corporate families using shared registered identifiers, shared officers, declared parents and portfolio containment. Every family carries a confidence level and the evidence behind it. Full methodology, and the resolution report comparing our groupings with CMS's own chain designation.
Common questions
Is CMS nursing home ownership data free?
Yes. It is published as a US Government work in the public domain and may be redistributed, including commercially.
Why does CMS ownership data not name the company that runs a nursing home?
Because it names legal entities. A single operator commonly files as a separate company per building, so the operating group has no row of its own.
How often is it updated?
CMS republishes on a rolling basis. The file vintage in use is shown at the top of every page on this site.