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

Dr. Rock Edward Svennungsen, O.D.

Optometrist in Shelby, MT · enumerated 2006.

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

National Provider Identifier

1487607404

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Registry record

Entity type Individual (Type 1)

Name Dr. Rock Edward Svennungsen

Credential O.D.

Sex Male

Practice address Shelby, MT, 59474

Phone (406) 434-2763

Fax (406) 434-2904

Enumeration date May 19, 2006

Last updated in NPPES Jul 28, 2009

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 446 (MT) 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
410035739	Other	-	RAILROAD MEDICARE
0480324	Medicaid	MT	-

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 Rock Svennungsen?

Rock Svennungsen 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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Haley Menge Optometrist · Shelby, MT NPI 1477990554

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-28.