Mark Eugene Hwang
- Medicare services, 2024
- 2,243
- Medicare patients, 2024
- 281
- Part D claims, 2024
- 1,080
- Hospital affiliations
- 2
- Industry payments
- $20
- Practice address
- 725 American Ave, Waukesha, WI 53188
- Practice phone
- Call (262) 928-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Mark Eugene Hwang is a radiation oncologist in Waukesha, Wisconsin
Mark Hwang practices at ProHealth Waukesha Memorial Hospital in Waukesha, Wisconsin, part of ProHealth Care.
Mark Hwang's NPI, 1487049037, was assigned on March 31, 2015. Mark Hwang attended University of Illinois College of Medicine at Chicago. Mark Hwang holds Wisconsin license 73946.
- NPI
- 1487049037NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608178215
- NPI enumeration date
- March 31, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (262) 928-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Eugene Hwang practices at ProHealth Waukesha Memorial Hospital in Waukesha, Wisconsin
Mark Hwang's primary practice is ProHealth Waukesha Memorial Hospital, at 725 American Ave, Waukesha, WI 53188 in Waukesha County. The practice phone is (262) 928-1000.
- ProHealth Waukesha Memorial Hospital725 American Ave, Waukesha, WI 53188 · Waukesha CountyPhone(262) 928-1000
Source: Dmand AI Affiliation Data
Mark Eugene Hwang is affiliated with 2 sites of care and 1 medical group
Mark Hwang's primary practice is ProHealth Waukesha Memorial Hospital in Waukesha, Wisconsin, part of ProHealth Care. Mark Hwang is also affiliated with ProHealth Oconomowoc Memorial Hospital. The medical group on file is ProHealth Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Eugene Hwang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Hwang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ProHealth Waukesha Memorial Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Eugene Hwang is one of 121 radiation oncologists in Wisconsin
Radiation oncology is Mark Hwang's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Mark Hwang is licensed in Wisconsin.
Specialties and state licenses
- Radiation oncology, WisconsinPrimary
Radiation oncologists near Mark Hwang
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
Mark Eugene Hwang billed Medicare for 2,243 services in 2024
CMS data shows 2,243 Medicare services from Mark Hwang across 13 procedure codes in 2024, for 281 Medicare patients. Medicare paid $146,852 for them.
Mark Hwang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,0882024: 1,86511%
- Office and hospital visits
- 2023: 2882024: 37831%
Where Mark Hwang's Medicare services took place, 2024
- In an office1,59871%
- In a facility64529%
Mark Hwang compared with the Wisconsin median for radiation oncologists, 2024
- Mark Hwang
- Wisconsin median
- Medicare services
- 2,243vs 8892.5 times
- Medicare patients
- 281vs 14890% above
- Part D claims
- 1,030vs 4125.1 times
Medians across 125 radiation oncologists in Wisconsin with Dmand AI profiles that report each measure.
Mark Hwang'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Mark Eugene Hwang treated 281 Medicare patients in 2024, average age 74
CMS counts 281 Medicare patients who saw Mark Hwang in 2024. The largest group is 65 to 74, with 142 patients. 75% of them have cancer, and 75% have high cholesterol. Their average risk score is 1.26, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Hwang's median patient age at 75, with 4% women.
Mark Hwang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mark Hwang's Medicare patients by sex, 2024
- Women135%
- Men26895%
Chronic conditions among Mark Hwang's Medicare patients, 2024
- Cancer75%
- High cholesterol75%
- High blood pressure74%
- Arthritis31%
- Ischemic heart disease29%
- Diabetes19%
- Chronic kidney disease18%
- Atrial fibrillation17%
Share of Medicare patients with each condition. A patient can have several.
Mark Hwang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women4%
- Men96%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark Eugene Hwang wrote 1,080 Medicare Part D claims in 2024
In 2024, Mark Hwang wrote 1,080 Medicare Part D claims for 275 patients. 100% of them were for generic drugs. CMS names the drug for 1,030 of them, across 8 drugs with 11 or more claims each, at $11,960 in total drug cost. In 2023, CMS named 716 claims across 6 drugs.
Mark Hwang's Part D claims by kind of drug, 2024
- Generic1,078 claims100%
- Brand-name and other2 claims0%
Mark Hwang'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 Mark Hwang's Part D claims, 2024
- Antibiotics2%25 of 1,080 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: 7162024: 1,03044%
Drugs named by CMS: 8 in 2024, 6 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
Mark Eugene Hwang offers telehealth to Medicare patients
Mark Hwang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Mark Hwang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Mark Eugene Hwang received $20 in industry payments in 2024
CMS Open Payments shows 1 general payment to Mark Hwang from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $20.
Companies that paid Mark Hwang the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mark Eugene Hwang graduated from University of Illinois College of Medicine at Chicago
Mark Hwang attended University of Illinois College of Medicine at Chicago.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mark Eugene Hwang'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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 Mark Eugene Hwang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Eugene Hwang's NPI number?
Mark Eugene Hwang's NPI number is 1487049037. It was assigned on March 31, 2015, and it is active in the NPI Registry.
What does Mark Eugene Hwang specialize in?
Mark Eugene Hwang is a radiation oncologist in Waukesha, Wisconsin. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Mark Eugene Hwang practice?
Mark Hwang practices at 725 American Ave, Waukesha, WI 53188. Mark Hwang's primary practice is ProHealth Waukesha Memorial Hospital in Waukesha, Wisconsin, part of ProHealth Care.
What is Mark Eugene Hwang's office phone number?
The practice phone on file for Mark Hwang is (262) 928-1000.
What is Mark Eugene Hwang's medical license number?
Mark Hwang holds Wisconsin license 73946.
Which hospitals is Mark Eugene Hwang affiliated with?
Mark Hwang practices at ProHealth Waukesha Memorial Hospital in Waukesha, Wisconsin. Mark Hwang is also affiliated with ProHealth Oconomowoc Memorial Hospital.
What medical group is Mark Eugene Hwang part of?
Mark Hwang is linked to ProHealth Medical Group.
Does Mark Eugene Hwang accept Medicare?
Yes. CMS data shows Mark Hwang billed Medicare for 2,243 services in 2024, and Mark Hwang accepts Medicare assignment.
Does Mark Eugene Hwang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Mark Hwang as offering telehealth services.
How many Medicare patients does Mark Eugene Hwang see?
CMS counts 281 Medicare patients who saw Mark Hwang in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Mark Eugene Hwang bill to Medicare?
In 2024, Mark Hwang's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and office visit, established patient (99213).
Where did Mark Eugene Hwang go to medical school?
Mark Hwang attended University of Illinois College of Medicine at Chicago.
What drugs does Mark Eugene Hwang prescribe most?
In 2024 Medicare Part D data, Mark Hwang's most prescribed drugs by claims were Tamsulosin HCl, Oxybutynin Chloride ER and Megestrol Acetate.
Has Mark Eugene Hwang received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Mark Hwang from 1 company from 2024 to 2024. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Mark Eugene Hwang been practicing?
Mark Hwang's NPI was assigned in 2015.
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