Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas M Kazmierczak Jr., DO

Obstetrics & Gynecology Physician in Morris, IL · enumerated 2005 · practices at Elite Gynecology S.C..

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

National Provider Identifier

1225033871

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Registry record

Entity type Individual (Type 1)

Name Thomas M Kazmierczak Jr.

Credential DO

Sex Male

Practice address 936 W Us Route 6, Morris, IL, 60450

Phone (815) 942-0525

Fax (815) 942-3501

Enumeration date Jun 20, 2005

Last updated in NPPES Aug 9, 2023

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 036107879 (IL) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
259912	Other	IL	HEALTHLINK
3229984	Other	IL	BCBS
020438	Other	IL	HEALTH ALLIANCE
036107897	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 1225033871 active?

Yes, as of the latest NPPES snapshot, NPI 1225033871 is active (record last updated 2023-08-09).

How do I verify Thomas Kazmierczak's NPI record?

Cross-check NPI 1225033871 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Peter Vienne Obstetrics & Gynecology Physician · Morris, IL NPI 1518962174 Elite Gynecology S.C. Obstetrics & Gynecology Physician · Morris, IL NPI 1871793646

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-09.