Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Janet Lynn Dudzinski, MS, CCC-SLP/L

Speech-Language Pathologist in Elmhurst, IL · enumerated 2021.

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

National Provider Identifier

1801566831

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Registry record

Entity type Individual (Type 1)

Name Ms. Janet Lynn Dudzinski

Credential MS, CCC-SLP/L

Sex Female

Practice address 888 N Wilson St, Elmhurst, IL, 60126

Phone (630) 832-8601

Enumeration date Sep 21, 2021

Last updated in NPPES Sep 21, 2021

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 146.009499 (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.

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Frequently asked questions

Where does Janet Dudzinski practice?

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

What is the NPI number for Janet Dudzinski?

The National Provider Identifier (NPI) for Janet Dudzinski is 1801566831, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-21.