Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peggy Reu, APN

Clinical Nurse Specialist in Downers Grove, IL · enumerated 2009.

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

National Provider Identifier

1851522247

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Registry record

Entity type Individual (Type 1)

Name Peggy Reu

Credential APN

Sex Female

Practice address 3743 Highland Ave Ste 1002, Downers Grove, IL, 60515

Phone (630) 719-4799

Enumeration date Aug 3, 2009

Last updated in NPPES May 5, 2022

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209002520 (IL) Secondary

364S00000X Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 209-002520 (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 1851522247 active?

Yes, as of the latest NPPES snapshot, NPI 1851522247 is active (record last updated 2022-05-05).

How do I verify Peggy Reu's NPI record?

Cross-check NPI 1851522247 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 2022-05-05.