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Janusz Mejer MD, Sc.

Legal Medicine in Mt Prospect, IL · enumerated 2007 · authorized official Aneta Perez, Manager.

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

National Provider Identifier

1568667582

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Registry record

Entity type Organization (Type 2)
Legal business name Janusz Mejer MD, Sc.
Practice address 770 E Northwest Hwy, Mt Prospect, IL, 60056
Phone (312) 375-2942
Enumeration date Jun 19, 2007
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

173000000X Legal Medicine Other Service Providers Primary

Authorized official

Name Aneta Perez
Title Manager
Phone (847) 444-0553

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

What is the NPI number for Janusz Mejer MD, Sc.?
The NPI for Janusz Mejer MD, Sc. is 1568667582, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Janusz Mejer MD, Sc.?
NPPES lists Aneta Perez (Manager) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.