Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

James Robert Thayer, MD

Individual provider Internal Medicine Physician · NPI 1972551976

James Robert Thayer, MD is an Internal Medicine Physician in Portland, Oregon. Licensed in Oregon. Registered with an NPI since 2006.

Licensed in
OR
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

426 SW Stark St 5th Fl
Portland, OR 97204-2347
Phone: (503) 988-5140
Fax: (503) 988-5180
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD13684 (OR)

Record details

NPI number1972551976
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 4, 2006
Last updated in NPPESAugust 28, 2013
Mailing address421 Sw Oak St, Suite 210, Portland, OR 97204-1817

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