Martha McMahon, PA-C
Surgical Physician Assistant · Portland, OR
Martha McMahon, PA-C is a surgical physician assistant with a practice address in Portland, Oregon, and NPI 1407241490, issued on Apr 6, 2015. Check the license (Oregon PA172159, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Martha McMahon
- Credential
- PA-C
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License numbers
- PA172159 OR
172159 OR
Self-reported in NPPES; status is on the state search - Practice location
- 808 SW 15TH Ave, Portland, OR 97205
- Phone
- (503) 274-4994
- Enumerated
- Apr 6, 2015
- Record last updated
- Oct 22, 2025
- Medicaid ID
- 500698025 OR
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 362 in Oregon → Look up another NPI →
Also registered at 808 SW 15TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Martha McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license PA172159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average surgical physician assistant in 2024
27 Medicare Part D claims, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Atorvastatin Calcium11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Martha McMahon among 362 surgical physician assistant records in Oregon
Martha McMahon, PA-C is one of 362 surgical physician assistant records with a practice address in Oregon. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 60% of them.
- NPI issued2015 · 60% of these records are older, 35% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 78% of these records are
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in Oregon
There are 362 surgical physician assistant records in Oregon.
All 362 in Oregon → Every provider in Portland → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Mathew Buechel, PAPortland, OR 972061265757447
- Michelle Huggins, PHYSICIAN ASSISTANTEPortland, OR 972091255348884
- Barry Jacoshenk, PA-CPortland, OR 972091376600049
- Heather Marsh, PA-CPortland, OR 972091295138048
- Joseph Miller, PA-CPortland, OR 972091750964250
- Francisco Pena, PAPortland, OR 972011710479720
- Rafael RamosPortland, OR 972011205556271
- Justin Thibeault, PA-CPortland, OR 972091376579631
Common questions
What is Martha McMahon, PA-C's NPI number?
Martha McMahon, PA-C's National Provider Identifier (NPI) is 1407241490, issued on Apr 6, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Martha McMahon, PA-C located?
The NPPES record lists a practice address at 808 SW 15TH Ave, Portland, OR, 97205. Phone: (503) 274-4994. Providers update this record themselves, so call before visiting.
How can I verify Martha McMahon, PA-C's license?
NPPES lists Oregon license number PA172159, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Martha McMahon, PA-C prescribe under Medicare Part D?
In 2024, Martha McMahon, PA-C had 27 Medicare Part D claims; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.