Start with the Centers for Medicare & Medicaid Services (CMS) Provider Characteristics catalog and choose an All Owners dataset for the facility type you are investigating. Then use PECOS and NPPES to confirm the provider’s identity, IRS filings for nonprofit hospital relationships, and SEC EDGAR for public-company links. These records can show what an organization reported and when; no single source is a universal directory of ultimate owners.
Which official source should you use?
The right source depends on the kind of provider and the question you need answered. CMS All Owners files are the most direct starting point for covered Medicare-enrolled facilities. Other records help connect names and entities or trace particular kinds of relationships.
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| 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 data | Medicare enrollment and associations with organizations | Public subset focused on enrollment, not exhaustive ownership disclosure | File release date |
| NPPES | Provider identity, NPI, names, and locations | An NPI is not an ownership record or validation of licensure or credentialing | File dissemination date |
| IRS Tax Exempt Organization Search and Form 990 Schedule H | Nonprofit status, hospital facilities, and certain related entities or interests | Tax-year reporting with form-specific disclosure rules | Tax year and filing date |
| SEC EDGAR | Public-company filings and reported corporate structure | Does not cover every private provider entity | Filing date and period covered |
| CMS Provider Data Catalog and Medicare Compare data | Provider identity, type, location, and public performance information | Not an all-owner register | Dataset reporting period |
Start with the CMS All Owners file for the facility type
CMS’s Provider Characteristics catalog lists ownership and enrollment datasets for several facility categories, including hospitals, skilled nursing facilities, hospices, home health agencies, federally qualified health centers, and rural health clinics. Coverage and release schedules differ, so search for the facility’s category rather than assuming one file covers all providers.
What the owner rows tell you
The Hospital All Owners dataset includes owner name, ownership type, address, and effective date. CMS says it is drawn from PECOS, self-reported by the entity, and typically updated monthly. The page showed May 2026 as its latest release when reviewed.
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The Home Health Agency All Owners dataset provides basic owner fields for HHAs 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 when reviewed.
The Skilled Nursing Facility All Owners dataset is also based on self-reported PECOS information. CMS says it includes expanded ownership, management, and related-party disclosures, added to the dataset in 2024.
How to read CMS ownership information
- Search the CMS catalog for the provider category and open the matching dataset page.
- Record the latest release month or quarter and the dataset’s stated update frequency.
- Match the facility using its name, address, and an identifier such as its CMS Certification Number when available.
- Review the owner name, type, address, and effective date, and save the specific release you used.
A listed owner is a documented disclosure in a Medicare enrollment dataset, not independent verification of ultimate control. The files cover defined Medicare facility categories and do not necessarily show every ownership tier. Do not assume a reported landlord, management company, or related party is the legal owner of the provider unless the relationship is established separately.
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Names can vary between a consumer-facing brand, a legal business name, a billing organization, and a parent company. Enrollment and identifier records can help establish whether two similar names refer to the same provider or to related but distinct entities.
PECOS public enrollment data
PECOS is CMS’s Medicare Provider Enrollment, Chain, and Ownership System. CMS makes a public subset of PECOS enrollment information available; those files can identify Medicare providers or suppliers and show associations with groups or organizations. The public enrollment records are useful for checking organization links, but they are enrollment-focused and are not exhaustive ownership disclosures for every kind of healthcare business.
NPPES and National Provider Identifiers
NPPES downloadable files include the National Provider Identifier registry and reference files, with additional names and non-primary practice locations for individual and organization NPIs. CMS recommends Version 2 files for current downloads. Its download page listed a Version 2 dissemination update on September 14, 2026.
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An NPI can help distinguish a clinician or organization and connect names or locations across records. It does not establish ownership, licensure, accreditation, credentialing, or that a provider is still practicing at the listed address.
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Use the IRS Tax Exempt Organization Search to check tax-exempt status and locate Form 990-series returns. Search by EIN when possible. The IRS notes that its records use official filed names, which may differ from a familiar hospital or system brand.
Review the parent organization’s return and Schedule H, then follow any facility, management-company, or joint-venture names relevant to the question. Schedule H calls for information about hospital facilities, including names, addresses, and state license numbers, and covers specified management companies, joint ventures, and certain ownership or profit-sharing interests involving the organization and insiders or physicians. Its disclosures are limited to the form’s rules; it is not a universal commercial ownership filing.
Note both the tax year and filing date. A return describes a reporting period and may not reflect the organization’s current structure.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.For a public-company connection, check SEC EDGAR
If a provider or a company in its ownership chain is a public reporting company, search SEC EDGAR by company name or another available identifier. Search the parent and any subsidiaries named in the records you have already found. Company filings can describe corporate structure, subsidiaries, acquisitions, and material transactions.
EDGAR can help trace a public reporting company, but it is not a complete ownership directory for private medical groups, independent practices, or every provider subsidiary.
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Use Medicare comparison data for identity checks, not ownership proof
The CMS Provider Data Catalog makes public data used by Medicare comparison services available in open formats, including records for hospitals, clinicians, nursing homes, and home health agencies. These resources can help verify a provider’s name, location, and type, but they do not replace an All Owners file.
CMS’s Physician Compare administrative fact sheet says clinician and group information came primarily from PECOS and described group affiliations and legal business names. Treat directory entries as identity or affiliation checks, not proof that a parent company owns a practice.
Quick Recap
Trace the ownership chain without overstating it
- Identify the exact provider. Capture its legal name, any DBA or brand, address, state, provider type, and NPI or CMS Certification Number if available.
- Find the matching CMS dataset. Save its release date and record each owner name, type, address, and effective date.
- Connect name variations. Check PECOS public enrollment data and NPPES for organization identifiers, alternate names, and practice locations.
- Check nonprofit records when relevant. Search IRS filings by EIN and review the most recent Form 990 and Schedule H for the tax year, facilities, and reported related entities.
- Follow public-company names. Search EDGAR for a parent or subsidiary in the chain and inspect filings for reported subsidiaries and transactions.
- Keep dates attached to every link. Compare release dates, effective dates, filing periods, and filing dates. Records from different periods do not automatically describe one current ownership snapshot.
- Describe only what the records establish. For example: “CMS lists X as an owner in its May 2026 self-reported dataset.” Say “X ultimately owns the provider” only when the complete relationship is supported by records.
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