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
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).
Radiation Oncology Physician providers in Minnesota
There are 160 radiation oncology physician records in Minnesota.
Other radiation oncology physician records in Minnesota
- Nelson Adamson, MDShakopee, MN1720155336
- Nils Arvold, M.D.Duluth, MN1962607499
- Khaled Aziz, MD, PHDRochester, MN1881213007
- Justin Barnes, MD, MSRochester, MN1356968069
- Margaret Barnes, M.D.Fergus Falls, MN1699726349
- Ellen Bellairs, M.D.Maplewood, MN1952378044
- Alexandra Bennett, MDRochester, MN1174264832
- Jenna BorkenhagenFridley, MN1114345279
- Charilaos Harry Brastianos, MD PHDRochester, MN1053076695
- William Breen, MDRochester, MN1437683562
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.