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Dr. Nancy Duncan Stranz, MD

Obstetrics & Gynecology Physician in Oak Lawn, IL · enumerated 2010 · practices at Southwest Obstetrics and Gynecology, Ltd..

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

National Provider Identifier

1144542382

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Registry record

Entity type Individual (Type 1)
Name Dr. Nancy Duncan Stranz
Credential MD
Sex Female
Practice address 4225 W 95th St, Oak Lawn, IL, 60453
Phone (708) 423-2300
Fax (708) 423-2318
Enumeration date Feb 15, 2010
Last updated in NPPES Feb 11, 2020

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 036.124853 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Nancy Stranz's NPI record?
Cross-check NPI 1144542382 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1144542382 active?
Yes, as of the latest NPPES snapshot, NPI 1144542382 is active (record last updated 2020-02-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-11.