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Mario C. Yu MD PC

Specialist in Oak Brook, IL · enumerated 2008 · authorized official Vivien Yu, Office Manager.

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

National Provider Identifier

1285800409

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Registry record

Entity type Organization (Type 2)
Legal business name Mario C. Yu MD PC
Practice address 1919 Midwest Rd, Suite 100, Oak Brook, IL, 60523
Phone (630) 629-8282
Fax (630) 629-8318
Enumeration date May 7, 2008
Last updated in NPPES May 7, 2008

Taxonomy & classification

174400000X Specialist Other Service Providers · License 036061620 (IL) Primary

Authorized official

Name Vivien Yu
Title Office Manager
Phone (630) 629-8282

Other identifiers

Identifier Type State Issuer
036061620 Medicaid IL -

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 Mario C. Yu MD PC?
Mario C. Yu MD PC is registered in NPPES as a Specialist (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 2008-05-07.