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Aaron R Gruber, O.D.

Optometrist in Appleton, WI · enumerated 2011 · practices at Vision Mart, Inc.

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

National Provider Identifier

1548558869

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Registry record

Entity type Individual (Type 1)
Name Aaron R Gruber
Credential O.D.
Sex Male
Practice address 712 N Casaloma Dr, Appleton, WI, 54913
Phone (920) 832-1202
Fax (920) 832-1229
Enumeration date Jul 20, 2011
Last updated in NPPES Jul 20, 2011

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3238-35 (WI) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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.

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Frequently asked questions

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.
What specialty is Aaron Gruber?
Aaron Gruber 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-20.