Home › Research › Ownership resolution report
Ownership resolution report
Across 5,875 skilled nursing facilities, CMS's own chain designation and the WhoOwnsCare corporate-family graph are compared row by row. Every disagreement is classified rather than treated as an error.
82 facilities — 1.4% — remain unexplained conflicts. Those are held at noindex and never presented as resolved ownership.
How the two sources compare
| Classification | Facilities | Share |
|---|---|---|
| CMS records a chain we do not connect | 1,712 | 29.1% |
| Neither source groups it | 1,234 | 21.0% |
| CMS joins facilities we keep separate | 861 | 14.7% |
| Identical grouping | 589 | 10.0% |
| We group it; CMS records no chain | 371 | 6.3% |
| Our family is a partial superset | 339 | 5.8% |
| Our family is a superset of CMS's chain | 261 | 4.4% |
| CMS partially joins what we separate | 194 | 3.3% |
| Explained by a change of ownership | 167 | 2.8% |
| Unexplained conflict | 82 | 1.4% |
| Same operator, different label | 53 | 0.9% |
| Property owner versus operator | 6 | 0.1% |
| Governmental licence holder versus operator | 6 | 0.1% |
Confidence across resolved corporate families
| Confidence | Families |
|---|---|
| Verified | 389 |
| Corroborated | 13 |
| Unresolved | 9 |
| Possible | 1 |
What verified means here
A family is only called verified when documentary evidence — a shared registered identifier, a shared officer, or a declared parent relationship — connects at least 80% of its members. A single documentary link in one corner of a large group is not enough, because that is exactly how a confidently wrong grouping is produced.
CMS is a comparison source, not ground truth
No resolution rule has been changed in order to increase agreement with CMS. Where our graph groups facilities CMS records no chain for, that is the point of the exercise. Where CMS groups facilities we keep separate, we say so rather than merging to match.
Common questions
How accurate is this ownership data?
Every grouping carries a confidence level and the evidence behind it. Unexplained conflicts are published as unresolved rather than guessed.
Why does this site sometimes disagree with CMS?
Because CMS's chain designation is self-reported branding, and this graph is resolved from ownership filings. Most differences are explainable — a property company, a statutory licence holder, or a transaction between file dates.