NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Robert J. Wilkemeyer, O.D., Ltd

Optometrist in Hinsdale, IL · enumerated 2008 · authorized official Robert Wilkemeyer, Doctor/Owner.

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

National Provider Identifier

1558506345

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Robert J. Wilkemeyer, O.D., Ltd
Practice address 777 N York Rd, Hinsdale, IL, 60521
Phone (630) 323-0523
Fax (630) 323-0673
Enumeration date Dec 8, 2008
Last updated in NPPES Dec 8, 2008

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 046008055 (IL) Primary

Authorized official

Name Robert Wilkemeyer
Title Doctor/Owner
Phone (630) 323-0523

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 Robert J. Wilkemeyer, O.D., Ltd?
NPPES lists Robert Wilkemeyer (Doctor/Owner) as the authorized official for this organization.
What is the NPI number for Robert J. Wilkemeyer, O.D., Ltd?
The NPI for Robert J. Wilkemeyer, O.D., Ltd is 1558506345, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-12-08.