Medicare Enrolled

Dr. Vicky Nguyen, M.D.

Radiation Oncology · San Francisco, CA
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
Low-engagement
505 PARNASSUS AVE, San Francisco, CA 94143
4154761575
In practice since 2010 (15 years)
NPI: 1417277591 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Nguyen from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Nguyen

Dr. Vicky Nguyen is a radiation oncology specialist in San Francisco, CA, with 15 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 4,084 Medicare services across 4,056 unique beneficiaries.

Between the years covered by Open Payments, Dr. Nguyen received a total of $150 from 2 pharmaceutical and/or device companies across 3 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiation oncology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Nguyen is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 15 years in practice ▲ Top 36% volume in CA $150 industry payments

Medicare Practice Summary

Medicare Utilization ↗
4,084
Medicare services
Top 36% in CA for radiation oncology
4,056
Unique beneficiaries
$27
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~272 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
3D screening mammography (tomosynthesis)
A screening imaging test of the breast using 3D technology to detect potential abnormalities.
1,208 $28 $436
Screening mammography
An X-ray of the breast used to detect breast cancer in women who have no signs or symptoms of the disease.
1,193 $35 $872
Bone density scan (DEXA)
A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures.
431 $9 $183
Chest X-ray, 1 view
An X-ray image of the chest taken from a single angle. This imaging test is used to visualize the structures within the chest cavity.
296 $7 $248
Digital breast tomosynthesis (3D mammogram)
A specialized imaging test that creates three-dimensional pictures of the breast tissue to help detect abnormalities.
157 $21 $509
Diagnostic mammography of 1 breast
An X-ray examination of one breast to evaluate specific breast symptoms or abnormalities.
117 $28 $509
CT scan of head/brain, without contrast
A CT scan uses X-rays to create detailed images of the head or brain without the use of contrast dye.
112 $30 $608
Limited ultrasound of 1 breast
A focused ultrasound examination of a single breast to evaluate specific areas of concern.
85 $25 $485
Diagnostic mammography of both breasts 69 $32 $664
CT scan of abdomen and pelvis with contrast
A CT scan that uses dye to create detailed images of the abdomen and pelvis. This imaging test helps doctors examine internal organs and structures in these areas.
60 $66 $1,671
Hip X-ray, 2-3 views
An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures.
34 $8 $183
CT scan of chest blood vessels with contrast
A CT scan that uses contrast dye to create detailed images of the blood vessels in the chest.
33 $67 $1,013
Knee X-ray, 3 views
An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures.
27 $7 $203
CT scan of abdomen and pelvis, without contrast
A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye.
25 $64 $1,637
Abdominal X-ray, 1 view
An X-ray image of the abdomen taken from a single angle to visualize internal structures.
24 $7 $183
CT scan of upper spine, without contrast
A CT scan uses X-rays to create detailed images of the upper spine. This procedure is performed without the use of contrast dye.
22 $35 $611
Shoulder X-ray, 2+ views
An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures.
22 $6 $191
Breast biopsy with ultrasound-guided localization device placement
This procedure involves taking a tissue sample from a breast growth and placing a marker device to locate it, guided by ultrasound imaging.
21 $117 $4,023
Chest X-ray, 2 views
An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall.
18 $8 $183
X-ray of surgical specimen 18 $12 $183
MRI scan of both breasts
A magnetic resonance imaging test that creates detailed pictures of both breasts to help evaluate breast tissue.
18 $85 $4,453
Foot X-ray, 3+ views
An X-ray imaging test of the foot that captures at least three different views to evaluate the bones and joints.
15 $6 $183
X-ray of lower and sacral spine, 2-3 views
An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area.
14 $8 $183
Ankle X-ray, minimum 3 views
An X-ray imaging test of the ankle that captures at least three different angles to evaluate the bones and joints.
14 $6 $183
Breast lesion localization with imaging guidance
A device is placed in the breast to mark a specific area using imaging guidance. This helps locate the growth for further medical procedures.
13 $75 $2,241
CT scan of chest, without contrast
A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye.
13 $40 $611
X-ray of hand, minimum of 3 views
An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints.
13 $6 $211
Wrist X-ray, minimum 3 views
An imaging test using X-rays to capture at least three different angles of the wrist bones and joints.
12 $6 $183
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.

Industry Payment Transparency

Open Payments through 2024 ↗
$150
Total received (2018-2024)
Avg $50/year across 3 years
Bottom 46% in CA for radiation oncology
2
Companies
3
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →

Payment profile

Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.

Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$150 (100.0%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$18
2023
$71
2018
$61

Payments by company (2024)

Consulting
Speaking
Meals & Travel
Research
Hologic Sales and Service, LLC
$18
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Hologic Sales and Service, LLC
$89
Siemens Medical Solutions USA, Inc.
$61
Top 3 companies account for 100.0% of all-time payments
Associated products mentioned in payments ›
3DIMENSIONS
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →

Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.

Looking for a radiation oncology specialist in San Francisco?
Compare radiation oncologists in the San Francisco area by procedure volume, costs, and industry payment transparency.
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Data Sources

Provider Registry NPPES Weekly updates
Medicare Enrollment PECOS Monthly updates
Practice Data Medicare Util. Annual (CY lag)
Industry Payments Open Payments CY 2024
Disciplinary History — Not public N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Dr. Nguyen is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement, with 15 years of NPI registration.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Nguyen experienced with 3d screening mammography (tomosynthesis)?
Based on Medicare claims data, Dr. Nguyen performed 1,208 3d screening mammography (tomosynthesis) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Nguyen receive payments from pharmaceutical companies?
Yes. Dr. Nguyen received a total of $150 from 2 companies across 3 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Nguyen's costs compare to other radiation oncologists in San Francisco?
Dr. Nguyen's average Medicare payment per service is $27. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Nguyen) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →