Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Kristen Joanne Olszewski, APN-CNP

Nurse Practitioner in Oswego, IL · enumerated 2017.

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

National Provider Identifier

1922533397

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Registry record

Entity type Individual (Type 1)

Name Mrs. Kristen Joanne Olszewski

Credential APN-CNP

Sex Female

Practice address 4789 Route 71, Oswego, IL, 60543

Phone (630) 692-5730

Fax (630) 692-5731

Enumeration date Apr 24, 2017

Last updated in NPPES May 5, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 277001562 (IL) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 277001562 (IL) Primary

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

Is NPI 1922533397 active?

Yes, as of the latest NPPES snapshot, NPI 1922533397 is active (record last updated 2026-05-05).

How do I verify Kristen Olszewski's NPI record?

Cross-check NPI 1922533397 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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