NPPES file of Aug 9, 2026

Walter G. Larsen, M.D.

Specialist · Portland, OR

Walter G. Larsen, M.D. is a specialist with a practice address in Portland, Oregon, and NPI 1982670162, issued on Feb 27, 2006. Check the license (Oregon OR 6013, as entered in NPPES) with the Oregon board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1982670162
Name
Walter G. Larsen
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
OR 6013 OR
Self-reported in NPPES; status is on the state search
Practice location
1414 NW Northrup St, Portland, OR 97209
Phone
(503) 223-3104
Enumerated
Feb 27, 2006
Record last updated
Jul 19, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(503) 223-4619
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 1414 NW Northrup St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Cornelius Dial, RPHPharmacist1356444582

Verify Walter G. Larsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oregon board licenses this profession
    Search for license OR 6013    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Oregon license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Specialist providers in Oregon

There are 1,085 specialist records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,085 in Oregon → Every provider in Portland →

Other specialist records in Oregon

  1. Taylor AbrigoPortland, OR1487438586
  2. Jeffrey Absalon, MDBend, OR1225003833
  3. Christopher Adams, CRMAlbany, OR1972213577
  4. Ross Adams, LMTAshland, OR1477088524
  5. Daryl Adamson, MDPortland, OR1366445868
  6. Maria AddessiSalem, OR1124351010
  7. Alma AguirreKlamath Falls, OR1821474685
  8. Sheila Ahern, CPEPortland, OR1356709448
  9. Kyra Ahlstrom, LMTPortland, OR1649577073
  10. Lynn AkerBeaverton, OR1447700547

Common questions

What is Walter G. Larsen, M.D.'s NPI number?

Walter G. Larsen, M.D.'s National Provider Identifier (NPI) is 1982670162, issued on Feb 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Walter G. Larsen, M.D. located?

The NPPES record lists a practice address at 1414 NW Northrup St, Portland, OR, 97209. Phone: (503) 223-3104. Providers update this record themselves, so call before visiting.

How can I verify Walter G. Larsen, M.D.'s license?

NPPES lists Oregon license number OR 6013, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.