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Walter G. Larsen, M.D.

Specialist in Portland, OR · enumerated 2006 · practices at Portland Dermatology Clinic, LLP.

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

National Provider Identifier

1982670162

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Registry record

Entity type Individual (Type 1)
Name Walter G. Larsen
Credential M.D.
Sex Male
Practice address 1414 Nw Northrup St, Suite 600, Portland, OR, 97209
Phone (503) 223-3104
Fax (503) 223-4619
Enumeration date Feb 27, 2006
Last updated in NPPES Jul 19, 2010

Taxonomy & licenses

174400000X Specialist Other Service Providers · License OR 6013 (OR) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Walter Larsen?
The National Provider Identifier (NPI) for Walter Larsen is 1982670162, a Type 1 (individual) record in the CMS NPPES registry.
Where does Walter Larsen practice?
The practice location on file with NPPES is in Portland, OR. 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 2010-07-19.