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Start with the Centers for Medicare & Medicaid Services (CMS) Provider Characteristics catalog and choose the All Owners dataset for the facility type you are checking. Then use PECOS and NPPES to confirm that names and locations refer to the same provider. For nonprofit hospitals, check IRS filings; for a public-company parent, check SEC EDGAR. These sources document different parts of an ownership trail, but none is a universal, independently verified directory of every provider’s ultimate owner.
Start with the right CMS ownership dataset
CMS publishes All Owners data for specific Medicare-enrolled facility categories. The available datasets include hospitals, skilled nursing facilities, hospices, home health agencies, federally qualified health centers, and rural health clinics. Coverage and release schedules vary, so search the Provider Characteristics catalog for the facility category rather than assuming one file covers every kind of provider.
What the files can tell you
The Hospital All Owners dataset includes owner name, ownership type, ownership address, and effective date. CMS says it is drawn from PECOS, updated monthly, and self-reported by the entity. The page showed May 2026 as its latest release when checked. The Home Health Agency All Owners dataset has similar owner fields for home health agencies currently enrolled in Medicare; CMS describes it as PECOS-derived and self-reported, typically updated quarterly. Its page showed Q2 2026 as the latest data.
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How to use a CMS All Owners file
- Search the CMS catalog for the provider category and open its specific dataset page.
- Note the release month or quarter and the dataset’s stated update schedule.
- Match the facility using its name, address, and available identifier. Check whether a brand name differs from the legal entity name.
- Read the owner name, type, address, and effective date in the matching record, and preserve those details with the dataset release date.
These files are useful disclosures, not independent verification of ultimate control. They are limited to specified Medicare facility categories, are self-reported, and may not reveal every ownership tier. A listed owner or landlord should not automatically be described as the provider’s ultimate owner unless other records establish that relationship.
Use PECOS and NPPES to match the provider
Ownership records are only useful if you have matched the right facility or practice. PECOS—the Medicare Provider Enrollment, Chain, and Ownership System—supports enrollment and updates to enrollment information. CMS also publishes a public subset of PECOS enrollment data, which can help identify a Medicare provider or supplier and its associations with groups or organizations.
Use PECOS public enrollment information to check whether similar names refer to the same organization, whether a practitioner is associated with a group, and whether the enrolled legal business name differs from the name patients see. The public files are enrollment-focused; they are not a complete ownership disclosure for every healthcare business. CMS describes the public enrollment files as directly sourced from PECOS in its PECOS public enrollment data fact sheet. For enrollment resources, see CMS’s PECOS page.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallThe NPPES download page provides National Provider Identifier (NPI) registry files and reference files, including additional names and non-primary practice locations for individual and organization NPIs. CMS recommends Version 2 files for current downloads; the page listed September 14, 2026 as a Version 2 dissemination update. An NPI can help disambiguate a clinician or organization and connect names or locations across records. It is an identifier, not an ownership record, license, accreditation, or proof of current practice at a listed address. CMS also cautions that issuance of an NPI does not validate licensure or credentialing.
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For nonprofit hospitals, check IRS filings
The IRS Tax Exempt Organization Search (TEOS) provides tax-exempt status information and filings, including Form 990-series returns. Search by employer identification number (EIN) when you have it. A familiar hospital or system brand may not match the official filed name, so the IRS advises that name searches can return a legal name or filed DBA instead. Use the IRS TEOS to find the organization and its filings.
For a hospital organization, inspect the relevant Form 990 and Schedule H. Schedule H asks for information such as hospital facility names, addresses, and state license numbers, and it covers specified management companies, joint ventures, and certain ownership or profit-share interests involving the organization and specified insiders or physicians. The form’s disclosures are limited to its reporting rules; Schedule H is not a universal commercial ownership registry. Consult the IRS Schedule H instructions to understand what a particular filing is required to report. Record both the tax year and filing date because a return describes a reporting period and may not reflect today’s corporate structure.
For a public-company connection, search SEC EDGAR
If a provider or a parent company is a public reporting company, search its name in SEC EDGAR and review relevant filings. Search any named parent and subsidiaries as well. Filings may describe corporate structure, subsidiaries, acquisitions, and material transactions, helping you trace a reported connection through a public-company group.
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Use provider directories for identity checks, not ownership proof
The CMS Provider Data Catalog makes official data used by Medicare comparison websites available in open formats. Its resources include hospitals, clinicians, nursing homes, and home health agencies. These records can help verify provider identity, location, and type, but they do not replace an All Owners dataset.
CMS’s Physician Compare administrative fact sheet says clinician and group information came primarily from PECOS and describes group practice affiliations and legal business names. Use directory information to check identity or affiliation, not to prove that a parent company owns a practice.
Compare sources by what they establish
| Source | Best for | Main limitation | Date to record |
|---|---|---|---|
| CMS All Owners | Named owner rows for covered Medicare facility categories | Self-reported, category-specific data; not a universal record of ultimate ownership | Dataset month or quarter and owner effective date |
| PECOS public enrollment | Medicare enrollment and associations with organizations | Public subset focused on enrollment | File release date |
| NPPES | Provider identity, NPIs, names, and locations | An NPI is not ownership or credential validation | File dissemination date |
| IRS TEOS and Form 990 Schedule H | Nonprofit status, hospital facilities, and certain related entities and interests | Tax-year reporting with form-specific disclosure requirements | Tax year and filing date |
| SEC EDGAR | Public-company filings and reported corporate structure | Does not cover every private provider entity | Filing date and reporting period |
| CMS Provider Data Catalog and Medicare comparison data | Provider identity, category, location, and some affiliations | Not an all-owner register | Dataset reporting period |
Trace an ownership chain without overstating it
- Identify the exact facility or practice. Capture its legal name, any DBA or consumer-facing brand, address, state, provider type, and NPI or CMS Certification Number if available.
- Find the matching CMS All Owners dataset, if one exists for that provider category. Record its release date, the reported owner name and type, address, and effective date.
- Use PECOS public enrollment information and NPPES to check name variations, identifiers, organizational associations, and practice locations.
- For a nonprofit, search the IRS by EIN and inspect the latest available Form 990 and Schedule H. Follow any relevant parent, facility, management-company, or joint-venture names, while noting the return’s tax year and filing date.
- If a public company appears in the chain, search that company and named subsidiaries in EDGAR. Review filings for reported subsidiaries, acquisitions, and transactions.
- Compare dates before combining findings. Describe what each source reports and when; records from different periods do not automatically form a single current ownership snapshot.
State the evidence precisely. For example: “CMS lists X as an owner in its May 2026 self-reported dataset, with an effective date of [date]” describes a dated disclosure. Saying “X ultimately owns the provider” requires records that establish the full legal chain and relevant control relationship.
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