James M. Heun, M.D.
Hematology & Oncology Physician · Platteville, WI
James M. Heun, M.D. is a hematology & oncology physician with a practice address in Platteville, Wisconsin, and NPI 1497713697, issued on May 4, 2006. Check the license (Wisconsin 49672-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- James M. Heun
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 49672-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Eastside RD, Platteville, WI 53818
- Phone
- (608) 348-2331
- Enumerated
- May 4, 2006
- Record last updated
- Oct 21, 2025
- Medicare enrollment
- Enrolled (PECOS I20111010000083); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 295 in Wisconsin → Look up another NPI →
Also registered at 1400 Eastside RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley Adams, DPTPhysical Therapist1659164499
- Samantha AlbrigtsonOccupational Therapist1043975758
- Mackenzie AndersonPhysician Assistant1437813680
- Matti Asuma, MDOrthopaedic Surgery Physician1235529702
- Bruce Bartels, CRNACertified Registered Nurse Anesthetist1801869979
- Cody BertramPhysical Therapist1629761028
Verify James M. Heun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49672-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,478 Medicare Part D claims for 223 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 77 claims were for opioids.
Most prescribed
- Prednisone214 claims
- Abiraterone Acetate183 claims
- Omeprazole52 claims
- Prochlorperazine Maleate49 claims
- Revlimid49 claims
- Anastrozole40 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
- Southwest Health Center IncPlatteville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James M. Heun among 295 hematology & oncology physician records in Wisconsin
James M. Heun, M.D. is one of 295 hematology & oncology physician records with a practice address in Wisconsin. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2005 · median 2004 among the 217 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Wisconsin
There are 295 hematology & oncology physician records in Wisconsin.
All 295 in Wisconsin → Every provider in Platteville → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Soham AliMadison, WI 537921437891793
- Matthew Brunner, M.D.Madison, WI 537921568858264
- Thomas Enright, MDMadison, WI 537921659011609
- Jeremy Kratz, MDMadison, WI 537921417344177
- Vincent Ma, MDMadison, WI 537921437530722
- Devon MillerMadison, WI 537921174152821
- Monica Patel, M.D.Madison, WI 537921881004356
- Peyton Reves, MDMadison, WI 537921639631146
Common questions
What is James M. Heun, M.D.'s NPI number?
James M. Heun, M.D.'s National Provider Identifier (NPI) is 1497713697, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James M. Heun, M.D. located?
The NPPES record lists a practice address at 1400 Eastside RD, Platteville, WI, 53818. Phone: (608) 348-2331. Providers update this record themselves, so call before visiting.
How can I verify James M. Heun, M.D.'s license?
NPPES lists Wisconsin license number 49672-20, 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.
How much does James M. Heun, M.D. prescribe under Medicare Part D?
In 2024, James M. Heun, M.D. had 1,478 Medicare Part D claims for 223 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.