Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Mark Alan Gilbert, OD OPTOMETRIST
Optometrist in West Bend, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1518064344
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Registry record
Entity type Individual (Type 1)
Name Mr. Mark Alan Gilbert
Credential OD OPTOMETRIST
Sex Male
Practice address 1515 W Paradise Dr, West Bend, WI, 53095
Phone (262) 334-8001
Fax (262) 334-8028
Enumeration date Sep 20, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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.
Frequently asked questions
What specialty is Mark Gilbert?
Mark Gilbert is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.