Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karolyn M Ivanovic, M.D.

Diagnostic Radiology Physician in Mequon, WI · enumerated 2005.

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

National Provider Identifier

1457337867

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Registry record

Entity type Individual (Type 1)

Name Karolyn M Ivanovic

Credential M.D.

Sex Female

Practice address 12936 N Cobblestone Ct, Mequon, WI, 53097

Phone (612) 573-2200

Fax (612) 573-2274

Enumeration date Dec 16, 2005

Last updated in NPPES Dec 5, 2024

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 52808 (WI) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 47884 (MN) 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
1457337867	Medicaid	WI	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Karolyn Ivanovic practice?

The practice location on file with NPPES is in Mequon, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Karolyn Ivanovic?

The National Provider Identifier (NPI) for Karolyn Ivanovic is 1457337867, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-05.