Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Patricia J Karstaedt, M.D.

Diagnostic Radiology Physician in Chicago, IL · enumerated 2005 · practices at Robert H. Lurie Comprehensive Cancer Center of Northwestern University.

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

National Provider Identifier

1891779328

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Registry record

Entity type Individual (Type 1)

Name Dr. Patricia J Karstaedt

Credential M.D.

Sex Female

Practice address 250 E Superior St, Lynn Sage Breast Center, 4th Floor, Chicago, IL, 60611

Phone (312) 472-0436

Enumeration date Nov 29, 2005

Last updated in NPPES Oct 28, 2011

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 036122593 (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
86080015085260A040	Other	AZ	TRIWEST
300077586	Other	AZ	RR MEDICARE
389694	Medicaid	AZ	-
86080015085259A369	Other	AZ	TRIWEST

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 Patricia Karstaedt's NPI record?

Cross-check NPI 1891779328 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891779328 active?

Yes, as of the latest NPPES snapshot, NPI 1891779328 is active (record last updated 2011-10-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-28.