NPPES file of Aug 9, 2026

Jason S. Duelge, MD

Radiation Oncology Physician · Marshfield, WI

Jason S. Duelge, MD is a radiation oncology physician with a practice address in Marshfield, Wisconsin, and NPI 1326032509, issued on Sep 2, 2005. Check the license (Wisconsin 42634-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326032509
Name
Jason S. Duelge
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License numbers
42634-020 WI
4301093795 MI
Self-reported in NPPES; status is on the state search
Practice location
1000 N Oak Ave, Marshfield, WI 54449
Phone
(715) 387-5511
Enumerated
Sep 2, 2005
Record last updated
Jan 6, 2026
Medicare enrollment
Enrolled (PECOS I20141108000172); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 1999
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1000 N Oak Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sheetal Aatrai, MDInternal Medicine Physician1417568965
  2. Sukaina AbbasPediatrics Physician1407529191
  3. Chady Abboud Leon, M.D.Hematology & Oncology Physician1770737744
  4. Ihab Abdalrahman, MDHospitalist Physician1497855134
  5. Raquel Abengozar Mingorance, MDStudent in an Organized Health Care Education/Training Program1609437755
  6. Aanuoluwa Abiola, M.DGeriatric Medicine (Internal Medicine) Physician1598117574

Verify Jason S. Duelge in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 42634-020    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through 3 group practices

  1. Dickinson County Healthcare SystemIron Mountain, MI
  2. Lakeview Medical Center Inc OF Rice LakeRice Lake, WI
  3. Mchs Hospitals IncMarshfield, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Radiation Oncology Physician providers in Wisconsin

There are 153 radiation oncology physician records in Wisconsin.

All 153 in Wisconsin → Every provider in Marshfield →

Other radiation oncology physician records in Wisconsin

  1. Now Bahar Alam, MDEau Claire, WI1508363532
  2. Bethany Anderson, M.D.Madison, WI1629001417
  3. Richard Auchter, MDMadison, WI1366404329
  4. Musaddiq Awan, M.D.Milwaukee, WI1205279957
  5. James Baer, MDEau Claire, WI1275531493
  6. Patricia Barrett, MDMadison, WI1184690836
  7. Darryl BartonWausau, WI1609822774
  8. Andrew BaschnagelMadison, WI1578793048
  9. Michael BassettiMadison, WI1639332158
  10. Kenneth Bastin, MDMilwaukee, WI1457393431

Common questions

What is Jason S. Duelge, MD's NPI number?

Jason S. Duelge, MD's National Provider Identifier (NPI) is 1326032509, issued on Sep 2, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Jason S. Duelge, MD located?

The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 387-5511. Providers update this record themselves, so call before visiting.

How can I verify Jason S. Duelge, MD's license?

NPPES lists Wisconsin license number 42634-020, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.