Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carol Louise Sikorski, WHNP

Obstetrics & Gynecology Nurse Practitioner in South Bend, IN · enumerated 2007.

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

National Provider Identifier

1528109410

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Registry record

Entity type Individual (Type 1)

Name Carol Louise Sikorski

Credential WHNP

Sex Female

Practice address 1901 W Western Ave, South Bend, IN, 46619

Phone (574) 234-0933

Fax (574) 283-0054

Enumeration date Feb 12, 2007

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71001090C (IN) Secondary

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71001090A (IN) Primary

Other identifiers

Identifier	Type	State	Issuer
71001090C	Other	IN	STATE NP LICENSE #

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

What specialty is Carol Sikorski?

Carol Sikorski is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.