Medicare Enrolled
Dr. Matthew Quirk, M.D.
Radiation Oncology · Los Angeles, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
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. Quirk 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 →
Are you Dr. Quirk?
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What this data tells you about Dr. Quirk
Dr. Matthew Quirk is a radiation oncology specialist in Los Angeles, CA, with 14 years of NPI registration. Based on federal Medicare data, Dr. Quirk performed 13,614 Medicare services across 1,058 unique beneficiaries.
Between the years covered by Open Payments, Dr. Quirk received a total of $16,174 from 21 pharmaceutical and/or device companies across 97 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. Quirk 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.
✓ 14 years in practice
▲ Top 14% volume in CA
$16,174 industry payments
Medicare Practice Summary
Medicare Utilization ↗13,614
Medicare services
Top 14% in CA for radiation oncology
1,058
Unique beneficiaries
$11
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~972 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 |
|---|---|---|---|
| MRI contrast dye injection (gadobutrol) | 7,075 | $0 | $16 |
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
5,072 | $0 | $5 |
| Gadoxetate disodium injection Administration of a contrast agent used to enhance imaging studies of the liver. |
340 | $12 | $70 |
| Midazolam injection, per 1 mg Administration of midazolam hydrochloride, a sedative medication, measured in 1 mg increments. |
184 | $0 | $5 |
| Injection, fentanyl citrate, 0.1 mg | 94 | $1 | $4 |
| Cefazolin sodium injection, 500 mg An injection of 500 mg of cefazolin sodium, an antibiotic medication, administered into the body. |
86 | $1 | $4 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
76 | $47 | $259 |
| Cefazolin sodium injection, 500 mg An injection of the antibiotic cefazolin sodium. This specific formulation is not therapeutically equivalent to the standard J0690 code. |
66 | $1 | $8 |
| MRI of abdomen with and without contrast An MRI scan of the abdomen using contrast dye before and after administration to create detailed images of internal structures. |
59 | $326 | $5,009 |
| MRI of pelvis with and without contrast A magnetic resonance imaging scan of the pelvic area performed both before and after the administration of a contrast dye to enhance image detail. |
57 | $315 | $5,058 |
| 3D radiographic procedure with computerized image postprocessing A radiographic imaging procedure that creates three-dimensional images using computerized processing of the captured data. |
51 | $65 | $528 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
46 | $8 | $33 |
| 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. |
42 | $211 | $1,374 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
36 | $36 | $185 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
34 | $128 | $1,209 |
| Fluoroscopic guidance for central vein access device Use of live X-ray imaging to guide the placement or removal of a central vein access device. |
33 | $95 | $643 |
| Central venous port insertion A surgical procedure to place a small reservoir under the skin for long-term access to the bloodstream. The device is connected to a vein to allow for repeated medication administration or blood draws. |
29 | $902 | $6,339 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
26 | $29 | $175 |
| Bone marrow biopsy and aspiration A procedure to remove a small sample of bone marrow and liquid for laboratory testing. The sample is analyzed to help diagnose various medical conditions. |
22 | $150 | $849 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
22 | $77 | $508 |
| Core needle biopsy of lung or mediastinum A procedure to remove a small tissue sample from the lung or the space between the lungs using a needle inserted through the skin. |
19 | $816 | $4,903 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
19 | $103 | $821 |
| 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. |
16 | $71 | $418 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
15 | $49 | $440 |
| Nuclear medicine scan from skull base to mid-thigh with CT A nuclear medicine imaging study covering the area from the base of the skull to the middle of the thighs, performed alongside a CT scan. |
15 | $1,507 | $10,651 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
15 | $18 | $106 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
14 | $105 | $672 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
14 | $24 | $160 |
| Limited abdominal ultrasound A focused ultrasound examination of the abdomen to evaluate specific organs or areas. This procedure uses sound waves to create images of internal structures. |
13 | $24 | $128 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 13 | $287 | $1,916 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
11 | $53 | $1,013 |
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 ↗$16,174
Total received (2018-2024)
Avg $2,311/year across 7 years
Top 6% in CA for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
21
Companies
97
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
$16,174 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,282
2023
$1,155
2022
$11,101
2021
$665
2020
$179
2019
$947
2018
$844
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
W. L. Gore & Associates, Inc.
$619
Boston Scientific Corporation
$318
Inari Medical, Inc.
$191
Ethicon US, LLC
$131
Siemens Medical Solutions USA, Inc.
$24
Top 3 companies account for 88.0% of 2024 payments
All-time payments by company (2018-2024) ›
Siemens Medical Solutions USA, Inc.
$10,118
Boston Scientific Corporation
$1,424
W. L. Gore & Associates, Inc.
$922
Medtronic USA, Inc.
$640
Medtronic, Inc.
$615
Terumo Medical Corporation
$546
Ethicon US, LLC
$324
Medtronic Vascular, Inc.
$271
Inari Medical, Inc.
$191
Philips Electronics North America Corporation
$187
Galvanize Therapeutics, Inc
$167
Silk Road Medical, Inc.
$139
BOSTON SCIENTIFIC CORPORATION
$127
Medical Device Business Services, Inc.
$116
ARGON MEDICAL DEVICES, INC.
$112
E.R. Squibb & Sons, L.L.C.
$100
BAXTER HEALTHCARE
$70
Cook Medical LLC
$37
Sirtex Medical Inc
$25
Abbott Laboratories
$24
B. Braun Interventional Systems Inc.
$17
Top 3 companies account for 77.1% of all-time payments
Associated products mentioned in payments ›
(6554) Peripheral Vascular Undivided · (8324) Azurion 7 M20 · ABRE · ALIYA SYSTEM · AVVIGO Guidance System · AZUR · AZUR CX DETACHABLE · AngioSeal · Artis icono floor · BIOPINCE · CERTUS 140 MICROWAVE ABLATION SYSTEM · CONCERTOTM · CT THROMBECTOMY SYSTEM KIT · Certus 140 · Concerto · Cook Medical Drainage · Cook Medical Self-Expanding Stent · ELIQUIS · EMBOLD Fibered · ENDURANT IIS · ENROUTE Transcarotid Stent · EXCLUDER Conformable AAA Endoprosthesis with Active Control · Endurant · FLOWTRIEVER CATHETER · GENERAL CATHETERS · GENERAL EMBOLICS · GENERAL METALLIC STENTS · GENERAL VASCULAR INTERVENTION · GORE EXCLUDER AAA Endoprosthesis · GORE TAG Conformable Thoracic Endoprosthesis · GORE VIABAHN VBX Balloon Expandable Endo · General - Embolics · JETI · KYPHON Balloon Kyphoplasty · MAGNETOM Free.Max · MVP · MicroThermX Microwave Ablation System · NAEOTOM Alpha · Neuwave · OptiCross 35 · Renal - PD · S · SIR-Spheres Microspheres · SOMATOM X.cite · TRUSELECT · TheraSphere Y90 Glass Microspheres 10 GBq · VENATECH VASCULAR IMPLANT · Valiant Captivia
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. Total industry engagement is in the top 6% for radiation oncology in CA.
Geographic Context
Radiation oncologists within 10 mi
993
Per 100K population
10.1
County median income
$87,760
Nearest hospital
RONALD REAGAN UCLA MEDICAL CENTER
0.0 mi
0.0 mi
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. Quirk is a mixed practice specialist, with above-average Medicare volume (top 14% in CA), with low-engagement industry engagement in the top 6% of CA peers.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Quirk experienced with mri contrast dye injection (gadobutrol)?
Based on Medicare claims data, Dr. Quirk performed 7,075 mri contrast dye injection (gadobutrol) 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. Quirk receive payments from pharmaceutical companies?
Yes. Dr. Quirk received a total of $16,174 from 21 companies across 97 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. Quirk's costs compare to other radiation oncologists in Los Angeles?
Dr. Quirk's average Medicare payment per service is $11. 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. Quirk) 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 →
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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.
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