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Mark A Stefaniuk, M.D.

Family Medicine Physician in Glenview, IL · enumerated 2006 · practices at Pioneer Concierge Medicine, Pllc.

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

National Provider Identifier

1013932409

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Registry record

Entity type Individual (Type 1)
Name Mark A Stefaniuk
Credential M.D.
Sex Male
Practice address 3633 W Lake Ave Ste 108, Glenview, IL, 60026
Phone (847) 510-2805
Fax (847) 510-2806
Enumeration date Jul 13, 2006
Last updated in NPPES Nov 14, 2022

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 89349 (ID#) (NC) Secondary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036-109698 (IL) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036109698 (IL) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036-109698 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
036109698-4 Medicaid IL -
036109698 Medicaid IL -

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

Is NPI 1013932409 active?
Yes, as of the latest NPPES snapshot, NPI 1013932409 is active (record last updated 2022-11-14).
How do I verify Mark Stefaniuk's NPI record?
Cross-check NPI 1013932409 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-14.