Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Agnieszka Nieciunski, APN

Adult Health Nurse Practitioner in Long Grove, IL · enumerated 2018.

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

National Provider Identifier

1376024976

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Registry record

Entity type Individual (Type 1)

Name Agnieszka Nieciunski

Credential APN

Sex Female

Practice address 3880 Salem Lake Dr Ste F, Long Grove, IL, 60047

Phone (847) 719-2220

Fax (847) 719-2265

Enumeration date Aug 22, 2018

Last updated in NPPES Jul 11, 2023

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209017915 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
209017915	Medicaid	IL	-
2018001749	Other	IL	ANCC CERTIFICATION

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

How do I verify Agnieszka Nieciunski's NPI record?

Cross-check NPI 1376024976 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1376024976 active?

Yes, as of the latest NPPES snapshot, NPI 1376024976 is active (record last updated 2023-07-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-11.