Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Alexander Wisniewski

Behavior Technician in Gurnee, IL · enumerated 2018.

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

National Provider Identifier

1538651922

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Alexander Wisniewski

Sex Male

Practice address Gurnee, IL, 60031

Phone (224) 545-0125

Enumeration date Jun 1, 2018

Last updated in NPPES Jun 1, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

106S00000X Behavior Technician Behavioral Health & Social Service Providers · License RBT-17-45142 (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

How do I verify Alexander Wisniewski's NPI record?

Cross-check NPI 1538651922 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1538651922 active?

Yes, as of the latest NPPES snapshot, NPI 1538651922 is active (record last updated 2018-06-01).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-01.