Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Brian Marshall

Individual provider Internal Medicine Physician · NPI 1407475007

Brian Marshall practises Internal Medicine in Corvallis, Oregon. Qualified in 2020, 6 years ago. Practices with Good Samaritan Hospital Corvallis, a 375-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
6
Licensed in
OR
In the registry since
2020
Specialties on file
2
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Practice location Address checks out

3600 NW Samaritan Dr
Corvallis, OR 97330-3737
Phone: (541) 768-4906
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence DO216717 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 199461 (OR)

Record details

NPI number1407475007
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 13, 2020
Last updated in NPPESAugust 17, 2023
Certification dateAugust 17, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Good Samaritan Hospital Corvallis — 375 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients157
Services billed 452 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Good Samaritan Hospital Corvallis

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 375 clinicians in the practice; 12 are shown here.

Other providers in Corvallis