Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana Renee Czech

Social Worker in Naperville, IL · enumerated 2023.

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

National Provider Identifier

1124719661

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Registry record

Entity type Individual (Type 1)

Name Diana Renee Czech

Sex Female

Practice address 230 Martin Ave, Naperville, IL, 60540

Phone (630) 848-1200

Fax (630) 848-1208

Enumeration date May 16, 2023

Last updated in NPPES Sep 24, 2025

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 150.107537 (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 1124719661 active?

Yes, as of the latest NPPES snapshot, NPI 1124719661 is active (record last updated 2025-09-24).

How do I verify Diana Czech's NPI record?

Cross-check NPI 1124719661 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 2025-09-24.