Thomas Harry Johnson, M.D.
Radiation Oncology Physician · Portland, OR
Thomas Harry Johnson, M.D. is a radiation oncology physician with a practice address in Portland, Oregon, and NPI 1083601835, issued on Oct 5, 2005. Check the license (Oregon MD13590, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Harry Johnson
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- MD13590 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3620 N Interstate Ave, Portland, OR 97227
- Phone
- (503) 280-2931
- Enumerated
- Oct 5, 2005
- Record last updated
- Dec 11, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (503) 280-2938
- Medicare enrollment
- Enrolled (PECOS I20070822000010); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 1979
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 115 in Oregon → Look up another NPI →
Also registered at 3620 N Interstate Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vinayak Muralidhar, MDInternal Medicine Physician1811345655
- Jaishanker Nautiyal, M.D.Radiation Oncology Physician1043208820
- Aaron Sabolch, MDRadiation Oncology Physician1033402995
- Nina Scott, MSWCounselor1619213352
- Natasha Tobias-White, REGISTERED NURSEFamily Nurse Practitioner1700453222
- Diane Tsai, M.D.Radiation Oncology Physician1730266966
Verify Thomas Harry Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD13590Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average radiation oncology physician in 2024
69 Medicare Part D claims for 26 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Tamsulosin Hcl22 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.
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF The NorthwestClackamas, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Harry Johnson among 115 radiation oncology physician records in Oregon
Thomas Harry Johnson, M.D. is one of 115 radiation oncology physician records with a practice address in Oregon. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 77% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1979 · median 2006 among the 85 with a school on file
- Record last updated2012 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Oregon
There are 115 radiation oncology physician records in Oregon.
All 115 in Oregon → Every provider in Portland → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Kiri Cook, MDPortland, OR 972271003235110
- Nicolaas De Wette, M.D.Portland, OR 972271689677692
- Kathleen Jaffe, M.D., MPHPortland, OR 972271386031649
- Jaishanker Nautiyal, M.D.Portland, OR 972271043208820
- Gregory Patton, M.D.Portland, OR 972271275536948
- Akanksha Rajeurs, M.D.Portland, OR 972271194110247
- Aaron Sabolch, MDPortland, OR 972271033402995
- Diane Tsai, M.D.Portland, OR 972271730266966
Common questions
What is Thomas Harry Johnson, M.D.'s NPI number?
Thomas Harry Johnson, M.D.'s National Provider Identifier (NPI) is 1083601835, issued on Oct 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Harry Johnson, M.D. located?
The NPPES record lists a practice address at 3620 N Interstate Ave, Portland, OR, 97227. Phone: (503) 280-2931. Providers update this record themselves, so call before visiting.
How can I verify Thomas Harry Johnson, M.D.'s license?
NPPES lists Oregon license number MD13590, 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 Thomas Harry Johnson, M.D. prescribe under Medicare Part D?
In 2024, Thomas Harry Johnson, M.D. had 69 Medicare Part D claims for 26 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.