Mark Eugene Hwang
Mark Eugene Hwang is a Radiation Oncology Radiology specialist based in Greenwich, CT with over 11 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across CT can see Mark Eugene Hwang in person in Greenwich or via virtual visit — no travel required. With 11+ years of experience, he has been practicing in the Greenwich area. Among his Medicare patients, common conditions include hypertension, high cholesterol, and cancer (per CMS data).
At a glance
- Prescribes opioids less than 31% of reporting doctors in Connecticut
- Virtual visits available — no app or travel required
Older · 2013dNPPES updated 2020-11-18 · verify NPI on CMS · Verify license at Connecticut Medical Examining Board
How Does This Doctor Compare?
Based on Medicare data, this doctor prescribes opioid pain medications conservatively.
Opioid Rx
↓ Lower = better1.69%
Connecticut avg: 3.9 · US avg: 5.1
✓ Higher than most doctors nationally(-3.4 pts)
1.69% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Medicare Patients
238
Unique beneficiaries
Standard volumePrescription Recipients
225
Patients prescribed
Prescriptions Written
771
Total claims
Total Medicare drug cost: $17k
Percentile rankings compared against 1,825 reporting peers in Connecticut.
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%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↑ More patients than average (+54%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-16%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ 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 (-12%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-8%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$20 received from industry
1 transaction reported in 2024 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Mark Eugene Hwang's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Nov 17, 2020
Self-reported via NPPES
11 years in practice
Established
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
Taxonomy: 2085R0001X
Mailing address
622 W 168th St Chony North Basement Room 11, New York, NY 10032-3720
Differs from practice location
Virtual Radiation Oncology Care With Mark Eugene Hwang
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark Eugene Hwang for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Greenwich 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 Mark Eugene Hwang
Dr. Hwang is listed as active in the NPI registry with telehealth listed in Greenwich, CT. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (208) 863-3911.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Mark Eugene Hwang
Practice Location
5 Perryridge Rd, Greenwich, CT 06830-4608
Mailing Address
622 W 168th St Chony North Basement Room 11, New York, NY 10032-3720
This is a provider directory. Contact the office directly to schedule appointments.
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