Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Trauma and Surgical Specialists of Dupage, LLC

Surgery Physician in Downers Grove, IL · enumerated 2007 · authorized official Michael Iwanicki, Owner.

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

National Provider Identifier

1003968157

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Registry record

Entity type Organization (Type 2)

Legal business name Trauma and Surgical Specialists of Dupage, LLC

Practice address 3815 Highland Ave, Tower 2, Suite 107, Downers Grove, IL, 60515

Phone (630) 275-7800

Fax (630) 810-9240

Enumeration date Jan 17, 2007

Last updated in NPPES Oct 14, 2011

Taxonomy & classification

208600000X Surgery Physician Allopathic & Osteopathic Physicians Primary

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Michael Iwanicki

Title Owner

Phone (603) 275-3892

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 type of organization is Trauma and Surgical Specialists of Dupage, LLC?

Trauma and Surgical Specialists of Dupage, LLC is registered in NPPES as a Surgery Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-14.