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

Daniel Joseph Izewski

Physician Assistant in Downers Grove, IL · enumerated 2020.

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

National Provider Identifier

1134749294

Verified

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Registry record

Entity type Individual (Type 1)

Name Daniel Joseph Izewski

Sex Male

Practice address Downers Grove, IL, 60515

Phone (639) 391-8322

Enumeration date Apr 19, 2020

Last updated in NPPES Oct 30, 2020

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

Taxonomy & licenses

261QU0200X Urgent Care Clinic/Center Ambulatory Health Care Facilities · License 085.008027 (IL) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085.008027 (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

What is the NPI number for Daniel Izewski?

The National Provider Identifier (NPI) for Daniel Izewski is 1134749294, a Type 1 (individual) record in the CMS NPPES registry.

Where does Daniel Izewski practice?

The practice location on file with NPPES is in Downers Grove, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-30.