Nicolaas W. De Wette, M.D.
Radiation Oncology Physician · Portland, OR
Nicolaas W. De Wette, M.D. is a radiation oncology physician with a practice address in Portland, Oregon, and NPI 1689677692, issued on May 23, 2005. Check the license (Oregon MD23344, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nicolaas W. De Wette
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- MD23344 OR
Self-reported in NPPES; status is on the state search - Practice location
- 265 N Broadway St, Portland, OR 97227
- Phone
- (503) 280-1223
- Enumerated
- May 23, 2005
- Record last updated
- Jun 8, 2026
- Fax
- (503) 528-5252
- Medicaid IDs
- 1016363 WA
287436 OR - Medicare enrollment
- Enrolled (PECOS I20070831000660); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 115 in Oregon → Look up another NPI →
Also registered at 265 N Broadway St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Christiansen, P.A.Surgical Physician Assistant1851394878
- Lisa Clark, FNPFamily Nurse Practitioner1942276282
- Tony Ho, MDHematology & Oncology Physician1417949124
- Angela Kalisiak, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1386647147
- Jody Kujovich, MDHematology & Oncology Physician1972562809
- Regan Look, M.D.Medical Oncology Physician1821091604
Verify Nicolaas W. De Wette in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD23344Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average radiation oncology physician in 2024
57 Medicare Part D claims for 32 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl25 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.
Industry payments in 2024: $179.20
5 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 4 group practices
- AsanteMedford, OR
- Central Washington Health Services AssociationMoses Lake, WA
- Northwest Cancer Specialists PCVancouver, WA
- Sky Lakes Medical Center IncKlamath Falls, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicolaas W. De Wette among 115 radiation oncology physician records in Oregon
Nicolaas W. De Wette, 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
- Graduated1988 · median 2006 among the 85 with a school on file
- Record last updated2026 · 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
- Kathleen Jaffe, M.D., MPHPortland, OR 972271386031649
- Thomas Johnson, M.D.Portland, OR 972271083601835
- 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 Nicolaas W. De Wette, M.D.'s NPI number?
Nicolaas W. De Wette, M.D.'s National Provider Identifier (NPI) is 1689677692, issued on May 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nicolaas W. De Wette, M.D. located?
The NPPES record lists a practice address at 265 N Broadway St, Portland, OR, 97227. Phone: (503) 280-1223. Providers update this record themselves, so call before visiting.
How can I verify Nicolaas W. De Wette, M.D.'s license?
NPPES lists Oregon license number MD23344, 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 Nicolaas W. De Wette, M.D. prescribe under Medicare Part D?
In 2024, Nicolaas W. De Wette, M.D. had 57 Medicare Part D claims for 32 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.