Dr. Hui-Zi Chen, MD, PhD
- Medicare services, 2024
- 245
- Medicare patients, 2024
- 60
- Part D claims, 2024
- 327
- Publications
- 23
- Clinical trials
- 1
- Practice address
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Practice phone
- Call (414) 805-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chen'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. Hui-Zi Chen is a medical oncologist in Milwaukee, Wisconsin
Dr. Chen practices at Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health.
Dr. Chen's NPI, 1386082691, was assigned on June 8, 2013. Dr. Chen graduated from Ohio State University College of Medicine in 2013. Dr. Chen holds Wisconsin license 74761.
- NPI
- 1386082691NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749419521
- NPI enumeration date
- June 8, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (414) 805-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hui-Zi Chen practices at Froedtert Hospital in Milwaukee, Wisconsin
Dr. Chen's primary practice is Froedtert Hospital, at 9200 W Wisconsin Ave, Milwaukee, WI 53226 in Milwaukee County. The practice phone is (414) 805-3000.
- Froedtert Hospital9200 W Wisconsin Ave, Milwaukee, WI 53226 · Milwaukee CountyPhone(414) 805-3000
Source: Dmand AI Affiliation Data
Dr. Hui-Zi Chen is affiliated with 1 site of care and 1 medical group
Dr. Chen's primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health. The medical group on file is Froedtert & the Medical College of Wisconsin Community Physicians.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hui-Zi Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Froedtert Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Froedtert ThedaCare Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Hui-Zi Chen is one of 73 medical oncologists in Wisconsin
Medical oncology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Chen is licensed in Wisconsin.
Specialties and state licenses
- Medical oncology, WisconsinPrimary
Medical oncologists near Dr. Chen
Counts of medical 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. Hui-Zi Chen billed Medicare for 245 services in 2024
CMS data shows 245 Medicare services from Dr. Chen across 3 procedure codes in 2024, for 60 Medicare patients. Medicare paid $17,511 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1562024: 1494%
- Other services
- 2023: 02024: 96
Dr. Chen compared with the Wisconsin median for medical oncologists, 2024
- Dr. Chen
- Wisconsin median
- Medicare services
- 245vs 32224% below
- Medicare patients
- 60vs 12452% below
- Part D claims
- 164vs 22126% below
Medians across 70 medical oncologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Chen'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. Chen and other medical oncologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hui-Zi Chen treated 60 Medicare patients in 2024, average age 71
CMS counts 60 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have cancer, and 63% have high blood pressure. Their average risk score is 3.08, 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. Chen's median patient age at 67, with 51% women.
Dr. Chen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chen's Medicare patients by sex, 2024
- Women3965%
- Men2135%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- Cancer75%
- High blood pressure63%
- High cholesterol58%
- Arthritis32%
- Diabetes32%
- Anxiety30%
- COPD28%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hui-Zi Chen wrote 327 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 327 Medicare Part D claims for 76 patients. 62% of them were for generic drugs. CMS names the drug for 164 of them, across 8 drugs with 11 or more claims each, at $766,115 in total drug cost. In 2023, CMS named 118 claims across 4 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic203 claims62%
- Brand-name124 claims38%
Dr. Chen'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. Chen's Part D claims, 2024
- Opioids4%13 of 327 claims
- Antibiotics6%19 of 327 claims
- Antipsychotics, patients 65 and over9%30 of 327 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: 1182024: 16439%
Drugs named by CMS: 8 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
Dr. Hui-Zi Chen offers telehealth to Medicare patients
Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Hui-Zi Chen has 23 publications on record
Dmand AI links 23 papers to Dr. Chen, published from 2012 to 2025. 2019 was the busiest year, with 4. The most frequent topics are High-Throughput Nucleotide Sequencing, Biomarkers, Tumor and Cell Proliferation. Dr. Chen has published most often in JCO Precis Oncol. Dr. Chen's most frequent co-authors are Sameek Roychowdhury, MD, Razelle Kurzrock, MD and Shumei Kato, MB.
Dr. Chen's papers by year, 2012 to 2025
Topics Dr. Chen writes about most
- High-Throughput Nucleotide Sequencing
- Biomarkers, Tumor
- Cell Proliferation
- Chromatin Immunoprecipitation
- E2F3 Transcription Factor
- E2F7 Transcription Factor
- Genomics
- Microsatellite Instability
Dr. Chen's most frequent co-authors
- Sameek Roychowdhury, MD13 shared papers
- Razelle Kurzrock, MD4 shared papers
- Shumei Kato, MB3 shared papers
Recent publications by Dr. Chen
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right medical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Hui-Zi Chen has worked on 1 clinical trial
Dmand AI links Dr. Chen to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Neoplasm Metastasis and Neoplastic Processes.
Conditions in Dr. Chen's trials
- Neoplasm Metastasis
- Neoplastic Processes
Investigators on the most trials with Dr. Chen
- Kathryn Cecilia Arbour, MD1 shared trial
- Yanyan Lou, MD1 shared trial
- Ronald L. Shazer, MD1 shared trial
Recent clinical trials with Dr. Chen
Study of Avutometinib (VS-6766) + Adagrasib in KRAS G12C NSCLC Patients (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Hui-Zi Chen received $41,179 in industry payments from 2018 to 2025
CMS Open Payments shows 28 general payments to Dr. Chen from 6 drug and device companies from 2018 to 2025. Speaker and faculty fees make up the largest share, 88% of the total. Jazz Pharmaceuticals Inc. paid the most, $40,134.
General payments to Dr. Chen by program year, 2018 to 2025
General payments to Dr. Chen by kind, 2018 to 2025
- Speaker and faculty fees$36,16788%
- Travel and lodging$2,3996%
- Consulting fees$1,5904%
- Food and beverage$1,0092%
- Education$140%
Companies that paid Dr. Chen 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. Hui-Zi Chen graduated from Ohio State University College of Medicine
Dr. Chen graduated from Ohio State University College of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Hui-Zi Chen'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Hui-Zi Chen
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. Hui-Zi Chen's NPI number?
Dr. Hui-Zi Chen's NPI number is 1386082691. It was assigned on June 8, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Hui-Zi Chen?
Dr. Hui-Zi Chen is a medical oncologist in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Hui-Zi Chen practice?
Dr. Chen practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. Dr. Chen's primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health.
What is Dr. Hui-Zi Chen's office phone number?
The practice phone on file for Dr. Chen is (414) 805-3000.
What is Dr. Hui-Zi Chen's medical license number?
Dr. Chen holds Wisconsin license 74761.
Which hospitals is Dr. Hui-Zi Chen affiliated with?
Dr. Chen practices at Froedtert Hospital in Milwaukee, Wisconsin.
What medical group is Dr. Hui-Zi Chen part of?
Dr. Chen is linked to Froedtert & the Medical College of Wisconsin Community Physicians.
Does Dr. Hui-Zi Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 245 services in 2024, and Dr. Chen accepts Medicare assignment.
Does Dr. Hui-Zi Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.
How many Medicare patients does Dr. Hui-Zi Chen see?
CMS counts 60 Medicare patients who saw Dr. Chen in 2024, with an average age of 71.
Show 7 more questionsShow fewer questions
What services does Dr. Hui-Zi Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were office visit, established patient (99215), medicare service (G2211) and office visit, new patient (99205).
Where did Dr. Hui-Zi Chen go to medical school?
Dr. Chen graduated from Ohio State University College of Medicine in 2013.
What drugs does Dr. Hui-Zi Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Dexamethasone, Olanzapine and Ondansetron HCl.
Has Dr. Hui-Zi Chen received payments from drug or device companies?
CMS Open Payments shows $41,179 in general payments to Dr. Chen from 6 companies from 2018 to 2025. The largest total came from Jazz Pharmaceuticals Inc.
How long has Dr. Hui-Zi Chen been practicing?
Dr. Chen graduated from medical school in 2013, 13 years ago.
Does Dr. Hui-Zi Chen do research?
Dmand AI links 23 publications to Dr. Chen, published from 2012 to 2025. Dr. Chen has worked on 1 clinical trial.
Who does Dr. Hui-Zi Chen publish with?
Dr. Chen's most frequent co-authors are Sameek Roychowdhury, MD (13 shared papers), Razelle Kurzrock, MD (4 shared papers) and Shumei Kato, MB (3 shared papers).
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