Kenneth Dornfeld, MD
Radiation Oncology Physician · Duluth, MN
Kenneth Dornfeld, MD is a radiation oncology physician with a practice address in Duluth, Minnesota, and NPI 1174524300, issued on Aug 10, 2005. Check the license (Minnesota 49970, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Kenneth Dornfeld
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 49970 MN
34808 IA
Self-reported in NPPES; status is on the state search - Practice location
- 400 East 3RD Street, Duluth, MN 55805
- Phone
- (218) 786-8364
- Enumerated
- Aug 10, 2005
- Record last updated
- May 19, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 679487000 MN
- Medicare enrollment
- Enrolled (PECOS I20160602001391); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 160 in Minnesota → Look up another NPI →
Also registered at 400 East 3RD Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kenneth Dornfeld in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 49970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average radiation oncology physician in 2024
386 Medicare Part D claims for 119 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 96 claims were for opioids.
Most prescribed
- Tamsulosin Hcl65 claims
- Oxycodone Hcl61 claims
- Lorazepam30 claims
- Lidocaine Hcl Viscous25 claims
- Prochlorperazine Maleate25 claims
- Oxybutynin Chloride20 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 2 group practices
- Polinsky Medical Rehabilitation CenterDuluth, MN
- The Duluth Clinic LtdDuluth, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kenneth Dornfeld among 160 radiation oncology physician records in Minnesota
Kenneth Dornfeld, MD is one of 160 radiation oncology physician records with a practice address in Minnesota. 79% 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, 84% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1993 · median 2011 among the 119 with a school on file
- Record last updated2011 · 39% 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 Minnesota 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 Minnesota
There are 160 radiation oncology physician records in Minnesota.
All 160 in Minnesota → Every provider in Duluth → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Teresa Easwaran, MD, MSDuluth, MN 558051467018069
- David McNaneyDuluth, MN 558051316971864
- Jessica Sawyer, MDDuluth, MN 558051992935084
- Nils Arvold, M.D.Duluth, MN 558021962607499
- Kai JiangRochester, MN 559021669031423
- Paul Brown, M.D.Rochester, MN 559051861479156
- Chunhee Choo, M.D.Rochester, MN 559051114905353
- Yolanda Garces, M.D.Rochester, MN 559051871571653
Common questions
What is Kenneth Dornfeld, MD's NPI number?
Kenneth Dornfeld, MD's National Provider Identifier (NPI) is 1174524300, issued on Aug 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Dornfeld, MD located?
The NPPES record lists a practice address at 400 East 3RD Street, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Dornfeld, MD's license?
NPPES lists Minnesota license number 49970, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kenneth Dornfeld, MD prescribe under Medicare Part D?
In 2024, Kenneth Dornfeld, MD had 386 Medicare Part D claims for 119 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.