Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Michael Y Hsie, MD

Individual provider Radiation Oncology Physician · NPI 1265695704

Michael Y Hsie, MD is a Radiation Oncology in Oshkosh, Wisconsin. Graduated from Northwestern University Feinberg Medical School in 2004, 22 years ago. Practices with Radiation Oncology Associates Ltd, a 23-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
22
Trained at
Northwestern University Feinberg Medical School
Licensed in
WI
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

855 N Westhaven Dr Dept OF Radiation Oncology
Oshkosh, WI 54904-7668
Phone: (920) 456-7900
Fax: (920) 456-7900
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 52572-20 (WI)

Record details

NPI number1265695704
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 4, 2008
Last updated in NPPESOctober 30, 2025
Certification dateOctober 30, 2025
Mailing address11516 N Port Washington Rd Ste 107, Mequon, WI 53092-3478

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2004 (22 years in practice)
Group practice Radiation Oncology Associates Ltd — 23 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

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