Dr. Michael Y. Hsie, MD
- Medicare services, 2024
- 1,054
- Medicare patients, 2024
- 133
- Part D claims, 2024
- 205
- Hospital affiliations
- 4
- Industry payments
- $331
- Practice address
- 11516 N Port Washington Rd, Mequon, WI 53092
- Practice phone
- Call (414) 649-6420
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Radiation Oncology Associates, Ltd
Mequon, Wisconsin
Find Dr. Hsie's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Michael Y. Hsie is a radiation oncologist in Mequon, Wisconsin
Dr. Hsie practices at Radiation Oncology Associates, Ltd in Mequon, Wisconsin.
Dr. Hsie's NPI, 1265695704, was assigned on July 4, 2008. Dr. Hsie graduated from Northwestern University Feinberg Medical School in 2004. Dr. Hsie holds Wisconsin license 52572-20.
- NPI
- 1265695704NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688726573
- NPI enumeration date
- July 4, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (414) 649-6420
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Y. Hsie practices at Radiation Oncology Associates, Ltd in Mequon, Wisconsin
Dr. Hsie's primary practice is Radiation Oncology Associates, Ltd, at 11516 N Port Washington Rd, Mequon, WI 53092 in Ozaukee County. The practice phone is (414) 649-6420.
- Radiation Oncology Associates, Ltd11516 N Port Washington Rd, Mequon, WI 53092 · Ozaukee CountyPhone(414) 649-6420
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael Y. Hsie is affiliated with 5 sites of care and 1 medical group
Dr. Hsie's primary practice is Radiation Oncology Associates, Ltd in Mequon, Wisconsin. Dr. Hsie is also affiliated with Aurora BayCare Medical Center. The medical group on file is Radiation Oncology Associates, Ltd. Dmand AI also links Dr. Hsie to 3 more hospitals, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael Y. Hsie's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hsie practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Radiation Oncology Associates, Ltd | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Y. Hsie is one of 121 radiation oncologists in Wisconsin
Radiation oncology is Dr. Hsie's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Hsie is licensed in Wisconsin.
Specialties and state licenses
- Radiation oncology, WisconsinPrimary
Radiation oncologists near Dr. Hsie
Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael Y. Hsie billed Medicare for 1,054 services in 2024
CMS data shows 1,054 Medicare services from Dr. Hsie across 13 procedure codes in 2024, for 133 Medicare patients. Medicare paid $74,686 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hsie's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 6882024: 91132%
- Office and hospital visits
- 2023: 582024: 9462%
- Other services
- 2023: 962024: 4949%
Dr. Hsie compared with the Wisconsin median for radiation oncologists, 2024
- Dr. Hsie
- Wisconsin median
- Medicare services
- 1,054vs 88919% above
- Medicare patients
- 133vs 14810% below
- Part D claims
- 78vs 4190% above
Medians across 125 radiation oncologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Hsie's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hsie and other radiation oncologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Y. Hsie treated 133 Medicare patients in 2024, average age 73
CMS counts 133 Medicare patients who saw Dr. Hsie in 2024. The largest group is 65 to 74, with 76 patients. 75% of them have cancer, and 75% have high blood pressure. 12% are also on Medicaid. Their average risk score is 1.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hsie's median patient age at 69, with 49% women.
Dr. Hsie's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hsie's Medicare patients by sex, 2024
- Women5642%
- Men7758%
Chronic conditions among Dr. Hsie's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis38%
- Diabetes36%
- Ischemic heart disease28%
- Chronic kidney disease27%
- COPD25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hsie's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Y. Hsie wrote 205 Medicare Part D claims in 2024
In 2024, Dr. Hsie wrote 205 Medicare Part D claims for 99 patients. 93% of them were for generic drugs. CMS names the drug for 78 of them, across 3 drugs with 11 or more claims each, at $1,215 in total drug cost. In 2023, CMS named 105 claims across 4 drugs.
Dr. Hsie's Part D claims by kind of drug, 2024
- Generic190 claims93%
- Brand-name15 claims7%
Dr. Hsie's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Hsie's Part D claims, 2024
- Opioids6%12 of 205 claims
- Antibiotics6%13 of 205 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1052024: 7826%
Drugs named by CMS: 3 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Michael Y. Hsie takes part in Medicare
Dr. Hsie accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Michael Y. Hsie received $331 in industry payments from 2018 to 2025
CMS Open Payments shows 5 general payments to Dr. Hsie from 4 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 97% of the total. IsoRay, Inc paid the most, $271.
General payments to Dr. Hsie by program year, 2018 to 2025
General payments to Dr. Hsie by kind, 2018 to 2025
- Food and beverage$32197%
- Gifts$103%
Companies that paid Dr. Hsie the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Y. Hsie graduated from Northwestern University Feinberg Medical School
Dr. Hsie graduated from Northwestern University Feinberg Medical School in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Y. Hsie's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael Y. Hsie
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael Y. Hsie's NPI number?
Dr. Michael Y. Hsie's NPI number is 1265695704. It was assigned on July 4, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Y. Hsie?
Dr. Michael Y. Hsie is a radiation oncologist in Mequon, Wisconsin. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Michael Y. Hsie practice?
Dr. Hsie practices at 11516 N Port Washington Rd, Mequon, WI 53092. Dr. Hsie's primary practice is Radiation Oncology Associates, Ltd in Mequon, Wisconsin. Dmand AI also links Dr. Hsie to 3 hospitals.
What is Dr. Michael Y. Hsie's office phone number?
The practice phone on file for Dr. Hsie is (414) 649-6420.
What is Dr. Michael Y. Hsie's medical license number?
Dr. Hsie holds Wisconsin license 52572-20.
Which hospitals is Dr. Michael Y. Hsie affiliated with?
Dr. Hsie is affiliated with Aurora BayCare Medical Center. Dmand AI links Dr. Hsie to 3 more hospitals.
What medical group is Dr. Michael Y. Hsie part of?
Dr. Hsie is linked to Radiation Oncology Associates, Ltd.
Does Dr. Michael Y. Hsie accept Medicare?
Yes. CMS data shows Dr. Hsie billed Medicare for 1,054 services in 2024, and Dr. Hsie accepts Medicare assignment.
How many Medicare patients does Dr. Michael Y. Hsie see?
CMS counts 133 Medicare patients who saw Dr. Hsie in 2024, with an average age of 73.
What services does Dr. Michael Y. Hsie bill to Medicare?
In 2024, Dr. Hsie's most billed Medicare services were radiation oncology (77014), radiation oncology (77300) and radiation oncology (77427).
Show 4 more questionsShow fewer questions
Where did Dr. Michael Y. Hsie go to medical school?
Dr. Hsie graduated from Northwestern University Feinberg Medical School in 2004.
What drugs does Dr. Michael Y. Hsie prescribe most?
In 2024 Medicare Part D data, Dr. Hsie's most prescribed drugs by claims were Tamsulosin HCl, Mometasone Furoate and Ssd.
Has Dr. Michael Y. Hsie received payments from drug or device companies?
CMS Open Payments shows $331 in general payments to Dr. Hsie from 4 companies from 2018 to 2025. The largest total came from IsoRay, Inc.
How long has Dr. Michael Y. Hsie been practicing?
Dr. Hsie graduated from medical school in 2004, 22 years ago.
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