Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Oakbrook Medical & Diagnostic Group

Q: What is the NPI number for Oakbrook Medical & Diagnostic Group?

The NPI for Oakbrook Medical & Diagnostic Group is 1619117165, a Type 2 (organization) record in the CMS NPPES registry.

Neurology Physician in Lombard, IL · enumerated 2009 · authorized official Jonathan Wang, Ceo.

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

National Provider Identifier

1619117165

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Registry record

Entity type Organization (Type 2)

Legal business name Oakbrook Medical & Diagnostic Group

Practice address 2200 S Main St, Suite 214, Lombard, IL, 60148

Phone (630) 364-4114

Fax (866) 868-7320

Enumeration date Feb 24, 2009

Last updated in NPPES Feb 24, 2009

Taxonomy & classification

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 036-111890 (IL) Primary

Authorized official

Name Jonathan Wang

Title Ceo

Phone (630) 364-4114

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

Who is the authorized official for Oakbrook Medical & Diagnostic Group?

NPPES lists Jonathan Wang (Ceo) as the authorized official for this organization.

What is the NPI number for Oakbrook Medical & Diagnostic Group?

The NPI for Oakbrook Medical & Diagnostic Group is 1619117165, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-24.