NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Slawomir M Soja, DN

Naprapath in Downers Grove, IL · enumerated 2012 · practices at Maximus Health, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669739934

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Registry record

Entity type Individual (Type 1)
Name Slawomir M Soja
Credential DN
Sex Male
Practice address Downers Grove, IL, 60516
Enumeration date Apr 11, 2012
Last updated in NPPES Jun 27, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

172M00000X Mechanotherapist Other Service Providers · License 227007732 (IL) Secondary
172P00000X Naprapath Other Service Providers · License 181000400 (IL) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Slawomir Soja's NPI record?
Cross-check NPI 1669739934 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1669739934 active?
Yes, as of the latest NPPES snapshot, NPI 1669739934 is active (record last updated 2022-06-27).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-27.