Brian Marshall
Internal Medicine Physician · Corvallis, OR
Brian Marshall is an internal medicine physician with a practice address in Corvallis, Oregon, and NPI 1407475007, issued on Apr 13, 2020. Check the license (Oregon DO216717, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Brian Marshall
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- DO216717 OR
199461 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3600 NW Samaritan Dr, Corvallis, OR 97330
- Phone
- (541) 768-4906
- Enumerated
- Apr 13, 2020
- Record last updated
- Aug 17, 2023
- Medicare enrollment
- Enrolled (PECOS I20230718003355); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 3600 NW Samaritan Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Edosasere Amayo, MDOrthopaedic Surgery Physician1467398859
- Levana Amrock, MDAnesthesiology Physician1699160184
Verify Brian Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license DO216717Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
302 Medicare Part D claims for 91 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Carvedilol13 claims
- Gabapentin13 claims
- Quetiapine Fumarate12 claims
- Allopurinol11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Good Samaritan Hospital CorvallisCorvallis, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Marshall among 2,116 internal medicine physician records in Oregon
Brian Marshall is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2020 · median 2008 among the 1,232 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
129 internal medicine physician records list a practice address in Corvallis
They are 129 of the 4,096 NPPES records with a practice address in Corvallis, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Corvallis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Steven Athay, M.D.Corvallis, OR 973301477502375
- Lynn Bentson, M.D, MACPCorvallis, OR 973301619916483
- Charlene Carroll, M.D.Corvallis, OR 973301275577769
- Brian Curtis, M.D.Corvallis, OR 973301245289115
- Ulrike Guempel, M.D.Corvallis, OR 973301912956897
- Kien Huynh, M.D.Corvallis, OR 973301619918034
- Janel Lawrence, M.D.Corvallis, OR 973301184673998
- Libor Pavlosek, M.D.Corvallis, OR 973301376510420
Common questions
What is Brian Marshall's NPI number?
Brian Marshall's National Provider Identifier (NPI) is 1407475007, issued on Apr 13, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Brian Marshall located?
The NPPES record lists a practice address at 3600 NW Samaritan Dr, Corvallis, OR, 97330. Phone: (541) 768-4906. Providers update this record themselves, so call before visiting.
How can I verify Brian Marshall's license?
NPPES lists Oregon license number DO216717, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian Marshall prescribe under Medicare Part D?
In 2024, Brian Marshall had 302 Medicare Part D claims for 91 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Brian Marshall's MIPS final score?
The 2023 MIPS final score is 86.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.