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

Thomas Harry Johnson, MD

Individual provider Radiation Oncology Physician · NPI 1083601835

Thomas Harry Johnson, MD is a Radiation Oncology in Portland, Oregon. Graduated from Virginia Commonwealth University, School of Medicine in 1979, 47 years ago. Practices with Kaiser Foundation Health Plan of the Northwest, a 1,811-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
47
Trained at
Virginia Commonwealth University, School of Medicine
Licensed in
OR
In the registry since
2005
Specialties on file
2
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

3620 N Interstate Ave
Portland, OR 97227-1106
Phone: (503) 280-2931
Fax: (503) 280-2938
Show map & directions

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

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence MD13590 (OR)
Therapeutic Radiology Physician Taxonomy 2085R0203X · Licence MD13590 (OR)

Record details

NPI number1083601835
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 5, 2005
Last updated in NPPESDecember 11, 2012

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolVIRGINIA COMMONWEALTH UNIVERSITY, SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Kaiser Foundation Health Plan Of The Northwest — 1811 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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