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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Piekarz, APN

Pediatric Nurse Practitioner in Elgin, IL · enumerated 2016 · practices at Greater Family Health.

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

National Provider Identifier

1265898928

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Registry record

Entity type Individual (Type 1)
Name Katherine Piekarz
Credential APN
Sex Female
Practice address 450 Dundee Ave, Elgin, IL, 60120
Phone (844) 599-3700
Fax (847) 608-4767
Enumeration date Jan 12, 2016
Last updated in NPPES May 31, 2022

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 041.413438 (IL) Secondary
363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209.013709 (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.

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Frequently asked questions

How do I verify Katherine Piekarz's NPI record?
Cross-check NPI 1265898928 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1265898928 active?
Yes, as of the latest NPPES snapshot, NPI 1265898928 is active (record last updated 2022-05-31).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-31.