CMS Change of Ownership (CHOW)

Recorded transfers of provider ownership, giving an effective date, an acquiring entity and a prior entity.

Publisher: Centers for Medicare & Medicaid Services
Official source: https://data.cms.gov/provider-characteristics/
Licence: U.S. Government Work, public domain
Edition in use: 2026-07-27
Grain: One row per recorded ownership transfer
Used by: WhoOwnsCare

Key fields

CCN
Effective date
Acquiring entity
Prior entity
State

Known limits

These are the specific ways this file is misread. We list them because a limit you do not know about is indistinguishable from a finding.

A CHOW records a change in the enrolled entity. It does not by itself establish that a commercial sale occurred, nor on what terms.
Financial periods straddling a CHOW date cannot be attributed to either party, and are left unattributed rather than split.

Reproduced, not verified. Values in this file are submitted by the filer. We verify that we have read and linked them correctly. We cannot verify that the filer was accurate, and we do not claim to. See how this is labelled on every published value.

How we use it

Values taken straight from this file are published as Primary filing. Anything derived by linking it to another file is published as Resolved, with the linking rule and its inputs shown alongside the result. Full methodology.

Corrections

If you believe we have misread this file, email corrections@techstackllc.io with the record identifier and the edition. Every request is logged and answered within two business days.