Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Donald V Maduzia Od PC

Optometrist in Clarendon Hills, IL · enumerated 2011 · authorized official Donald Maduzia, Optometrist/President.

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

National Provider Identifier

1033417845

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Registry record

Entity type Organization (Type 2)

Legal business name Donald V Maduzia Od PC

Practice address 203 Railroad Ave, Clarendon Hills, IL, 60514

Phone (630) 323-3202

Fax (630) 321-0512

Enumeration date Mar 2, 2011

Last updated in NPPES Mar 2, 2011

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 046-007789 (IL) Primary

332H00000X Eyewear Supplier Suppliers · License 046.007789 (IL) Secondary

Authorized official

Name Donald Maduzia

Title Optometrist/President

Phone (630) 323-3202

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-03-02. Verify at npiregistry.cms.hhs.gov.

Where is Donald V Maduzia Od PC located?

The practice location on file with NPPES is in Clarendon Hills, IL.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-02.