Michael Y. Hsie, MD
Radiation Oncology Physician · Oshkosh, WI
Michael Y. Hsie, MD is a radiation oncology physician with a practice address in Oshkosh, Wisconsin, and NPI 1265695704, issued on Jul 4, 2008. Check the license (Wisconsin 52572-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael Y. Hsie
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 52572-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 855 N Westhaven Dr, Oshkosh, WI 54904
- Phone
- (920) 456-7900
- Enumerated
- Jul 4, 2008
- Record last updated
- Oct 30, 2025
- Fax
- (920) 456-7900
- Medicaid ID
- 100003522 WI
- Medicare enrollment
- Enrolled (PECOS I20090724000038); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2004
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in Wisconsin → Look up another NPI →
Also registered at 855 N Westhaven Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Y. Hsie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 52572-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average radiation oncology physician in 2024
205 Medicare Part D claims for 99 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 12 claims were for opioids.
Most prescribed
- Tamsulosin Hcl52 claims
- Mometasone Furoate15 claims
- Ssd11 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: $134.53
2 payments; by number, the most common kind was food and beverage; the largest payer was IsoRay, Inc. 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 one group practice
- Radiation Oncology Associates LtdAppleton, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Y. Hsie among 153 radiation oncology physician records in Wisconsin
Michael Y. Hsie, MD is one of 153 radiation oncology physician records with a practice address in Wisconsin. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 43% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2004 · median 2008 among the 119 with a school on file
- Record last updated2025 · 44% 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 Wisconsin 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 Wisconsin
There are 153 radiation oncology physician records in Wisconsin.
All 153 in Wisconsin → Every provider in Oshkosh → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Rick Davis, MDOshkosh, WI 549041861460974
- Nathan Munson, M.D.Appleton, WI 549111962487512
- Michael Ray, MD PHDAppleton, WI 549111891888269
- Douglas Calvin, M.D.Appleton, WI 549131780677906
- Carol Grabowski, MDAppleton, WI 549131669582532
- Sara Beltran Ponce, MDAppleton, WI 549151104386671
- Filip Troicki, MDFond Du Lac, WI 549351174756696
- Michael Vander Kooy, M.D.Fond Du Lac, WI 549351760444541
Common questions
What is Michael Y. Hsie, MD's NPI number?
Michael Y. Hsie, MD's National Provider Identifier (NPI) is 1265695704, issued on Jul 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Michael Y. Hsie, MD located?
The NPPES record lists a practice address at 855 N Westhaven Dr, Oshkosh, WI, 54904. Phone: (920) 456-7900. Providers update this record themselves, so call before visiting.
How can I verify Michael Y. Hsie, MD's license?
NPPES lists Wisconsin license number 52572-20, 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 Michael Y. Hsie, MD prescribe under Medicare Part D?
In 2024, Michael Y. Hsie, MD had 205 Medicare Part D claims for 99 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.