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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mason Ronald Wilner, O.D.

Optometrist in Fargo, ND · enumerated 2008.

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

National Provider Identifier

1295991396

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Registry record

Entity type Individual (Type 1)
Name Dr. Mason Ronald Wilner
Credential O.D.
Sex Male
Practice address Fargo, ND, 58103
Phone (701) 293-8101
Fax (701) 293-7998
Enumeration date Jul 29, 2008
Last updated in NPPES Jul 29, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 661 (ND) 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

What is the NPI number for Mason Wilner?
The National Provider Identifier (NPI) for Mason Wilner is 1295991396, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mason Wilner practice?
The practice location on file with NPPES is in Fargo, ND. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-29.