Justin James Chau, M.D.
Justin James Chau is a Hematology & Oncology specialist based in Grafton, WI with over 11 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across WI can see Justin James Chau, M.D. in person in Grafton or via virtual visit — no travel required. Trained at University of Iowa, Rj & L Carver College of Medicine (class of 2015), he has been practicing for over 11 years. Among his Medicare patients, common conditions include hypertension, high cholesterol, and cancer (per CMS data).
At a glance
- Uses generic medications more than 83% of reporting doctors in Wisconsin
- Virtual visits available — no app or travel required
Older · 960dNPPES updated 2023-10-06 · verify NPI on CMS · Verify license at Wisconsin Medical Examining Board
Contact & Location
Practice Location
975 Port Washington Rd, Grafton, WI 53024-9204
How Does This Doctor Compare?
Based on Medicare data, this doctor favors affordable generic drugs over brand-name ones.
Opioid Rx
↓ Lower = better8.91%
Wisconsin avg: 4.3 · US avg: 5.1
⚠ Lower than most doctors nationally(+3.8 pts)
8.91% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better93.3%
Wisconsin avg: 82.2 · US avg: 82.8
✓ Higher than most doctors nationally(+10.5 pts)
Better than 83% of reporting doctors in WisconsinHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
152
Unique beneficiaries
Standard volumePrescription Recipients
59
Patients prescribed
Prescriptions Written
359
Total claims
Total Medicare drug cost: $138k
Percentile rankings compared against 779 reporting peers in Wisconsin.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Cancer.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-2%) — less common here
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-7%) — less common here
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↑ More patients than average (+26%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-13%) — less common here
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-5%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-6%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-4%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-6%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2015
University of Iowa Roy J. and Lucille a. Carver College of Medicine
Board certified · Oct 5, 2023
Self-reported via NPPES
11 years in practice
Established
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Taxonomy: 207RH0003X
Education & Training
University of Iowa, Rj & L Carver College of Medicine (Class of 2015)
Mailing address
975 Port Washington Rd, Grafton, WI 53024-9201
Differs from practice location
Virtual Hematology & Oncology Care With Justin James Chau
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Justin James Chau for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Grafton required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Justin James Chau
NPI records show Dr. Chau as active with telehealth listed in Grafton, WI. NPI status alone doesn't confirm open availability — call the office to confirm.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Justin James Chau
Practice Location
975 Port Washington Rd, Grafton, WI 53024-9204
Mailing Address
975 Port Washington Rd, Grafton, WI 53024-9201
This is a provider directory. Contact the office directly to schedule appointments.
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