NPPES file of Aug 9, 2026

James G. McMahan, DMD

General Practice Dentistry · La Grande, OR

James G. McMahan, DMD is a general practice dentistry with a practice address in La Grande, Oregon, and NPI 1063412302, issued on Jul 28, 2005. Check the license (Oregon 5974, 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
1063412302
Name
James G. McMahan
Credential
DMD
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
5974 OR
Self-reported in NPPES; status is on the state search
Practice location
504 4TH St, La Grande, OR 97850
Phone
(541) 963-5632
Enumerated
Jul 28, 2005
Record last updated
Jul 13, 2026
Fax
(541) 963-4584
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.
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8 nearest general practice dentistry records → All 1,888 in Oregon → Look up another NPI →

Verify James G. McMahan 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 5974    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

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James G. McMahan among 1,888 general practice dentistry records in Oregon

James G. McMahan, DMD is one of 1,888 general practice dentistry records with a practice address in Oregon. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 85% newer
  • In a Medicare fileNo · 60% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2026 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

6 general practice dentistry records list a practice address in La Grande

They are 6 of the 557 NPPES records with a practice address in La Grande, and 1,888 general practice dentistry records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,888 in Oregon → Every provider in La Grande → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Russell Kilpatrick, DMDLa Grande, OR 978501992811327
  2. Stephen Koza, DMDLa Grande, OR 978501861552085
  3. Brian Kruse, DMDLa Grande, OR 978501851406748
  4. Stephen McLean, DMDLa Grande, OR 978501831384247
  5. Edward Stuedli, DDSLa Grande, OR 978501659546661
  6. Michael Desjardin, D.M.D.John Day, OR 978451720203227
  7. James Klusmier, D.D.S.John Day, OR 978451356360044
  8. Kenneth Peterson, D.M.D.John Day, OR 978451053321497

Common questions

What is James G. McMahan, DMD's NPI number?

James G. McMahan, DMD's National Provider Identifier (NPI) is 1063412302, issued on Jul 28, 2005. An NPI identifies a provider in billing; it is not a license.

Where is James G. McMahan, DMD located?

The NPPES record lists a practice address at 504 4TH St, La Grande, OR, 97850. Phone: (541) 963-5632. Providers update this record themselves, so call before visiting.

How can I verify James G. McMahan, DMD's license?

NPPES lists Oregon license number 5974, 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.