NPI Portal NPI Lookup & Verification

Dr. Mark Brian Colander, O.D,

Dr. Mark Brian Colander is a Optometrist provider (Optometrist) practicing in Worth, IL, registered in the NPPES registry with NPI 1871889196 since 2011. The credential OD stands for Doctor of Optometry.

✓ Active NPI ✓ Valid NPI checksum

NPI 1871889196
Entity type Individual (Type 1)
Name Dr. Mark Brian Colander
Credential O.D,
Sex Male
Practice address 11412 S HARLEM AVE, Worth, IL, 60482
Phone 7084227000
Fax 7084484295
Enumeration date 2011-06-24
Last updated in NPPES 2013-09-14

Taxonomy & licenses

Taxonomy code Specialty Primary License State
152W00000X Optometrist Primary 046010615 IL
152W00000X Optometrist Secondary 18003760A IN

OD — Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Copy-ready billing details
Provider: Mark Colander, O.D,
NPI: 1871889196
Taxonomy: 152W00000X (Optometrist)
Address: 11412 S HARLEM AVE, Worth, IL, 60482

Other providers at this practice address

NPI Name Type Specialty Location
1992704365 J. A. Nolan, Od Ltd Organization Optometrist Worth, IL
1174959662 Forzley-Colander Eye Clinic, Inc Organization Optometrist Worth, IL

Verify this record

Cross-check NPI 1871889196 against the authoritative CMS record: view Dr. Mark Brian Colander on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

How do I verify Mark Colander's NPI record?
Cross-check NPI 1871889196 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1871889196 active?
Yes — as of the latest NPPES snapshot, NPI 1871889196 is active (record last updated 2013-09-14).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-09-14.