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

Dr. Ronald Robin Mathisen, OD

Optometrist in Buffalo, MN · enumerated 2006 · practices at Mathisen Optometry,LLC.

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

National Provider Identifier

1437188182

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Registry record

Entity type Individual (Type 1)

Name Dr. Ronald Robin Mathisen

Credential OD

Sex Male

Practice address Buffalo, MN, 55313

Phone (763) 682-9052

Fax (763) 782-8100

Enumeration date Jul 2, 2006

Last updated in NPPES Jul 9, 2007

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 2147 (MN) Primary

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

Other identifiers

Identifier	Type	State	Issuer
2217160	Other	MN	MEDICA #
HP19896	Other	MN	HEALTHPARTNERS
08F74MA	Other	MN	BCBS OF MN
107309	Other	MN	UCARE MN#
23667	Other	MN	AMERICA'S PPO
1000891	Other	MN	PREFERRED ONE
5439394	Other	MN	AETNA INS

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 specialty is Ronald Mathisen?

Ronald Mathisen 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.

Other providers at this practice address

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Mathisen Optometry,LLC Pediatric Optometrist · Buffalo, MN NPI 1730319021

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.