Medicare Enrolled
Dr. Ralph Marcus
Radiation Oncology · Irvine, 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. Marcus 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. Marcus
Dr. Ralph Marcus is a radiation oncology specialist in Irvine, CA, with 15 years of NPI registration. Based on federal Medicare data, Dr. Marcus performed 2,769 Medicare services across 2,516 unique beneficiaries.
Between the years covered by Open Payments, Dr. Marcus received a total of $626 from 7 pharmaceutical and/or device companies across 12 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. Marcus 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 47% volume in CA
$626 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,769
Medicare services
Top 47% in CA for radiation oncology
2,516
Unique beneficiaries
$37
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~185 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 |
|---|---|---|---|
| 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. |
705 | $7 | $39 |
| 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. |
304 | $33 | $180 |
| 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. |
200 | $10 | $54 |
| 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. |
188 | $68 | $368 |
| 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. |
104 | $12 | $60 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
74 | $7 | $39 |
| 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. |
70 | $15 | $80 |
| 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. |
66 | $43 | $228 |
| CT scan of neck blood vessels with contrast A computed tomography scan that uses dye to visualize the blood vessels in the neck. This imaging test helps examine the structure and flow within the neck's vascular system. |
59 | $67 | $368 |
| CT scan of head blood vessels with contrast A CT scan that uses contrast dye to create detailed images of the blood vessels in the head. |
55 | $70 | $368 |
| MRI scan of brain, without contrast A magnetic resonance imaging test of the brain that does not use contrast dye. This procedure creates detailed images of the brain's structure using magnetic fields and radio waves. |
53 | $59 | $310 |
| 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. |
50 | $71 | $383 |
| Insertion of tunneled central venous catheter for infusion, age 5+ A surgical procedure to place a long-term catheter into a large vein for delivering medications or fluids. The catheter is tunneled under the skin to reduce infection risk and provide stable access for patients aged 5 and older. |
48 | $216 | $1,125 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
45 | $59 | $310 |
| 3D radiographic procedure A radiographic imaging technique that creates three-dimensional representations of internal structures. |
44 | $8 | $42 |
| 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. |
41 | $73 | $384 |
| Limited retroperitoneal ultrasound A focused ultrasound exam of the area behind the abdominal cavity to evaluate specific structures. |
41 | $23 | $124 |
| 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. |
35 | $7 | $41 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
31 | $87 | $477 |
| 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. |
31 | $276 | $1,446 |
| Abdominal fluid drainage with imaging guidance Removal of fluid from the abdominal cavity using imaging technology to guide the procedure. |
30 | $84 | $460 |
| 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. |
27 | $63 | $336 |
| 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. |
26 | $40 | $211 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
26 | $25 | $134 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
25 | $32 | $171 |
| 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. |
23 | $9 | $48 |
| X-ray of lower leg, 2 views An X-ray imaging test of the lower leg using two different angles to visualize the bones and surrounding structures. |
23 | $6 | $35 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
23 | $64 | $335 |
| CT scan of lower spine, without contrast A computed tomography scan that creates detailed images of the lower spine using X-rays without the use of contrast dye. |
22 | $39 | $211 |
| Pelvis X-ray, 1-2 views An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints. |
22 | $7 | $38 |
| 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. |
22 | $7 | $38 |
| CT scan of abdominal and pelvic blood vessels with contrast A computed tomography scan that uses contrast dye to visualize the blood vessels in the abdomen and pelvis. |
22 | $88 | $459 |
| 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. |
22 | $23 | $125 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
20 | $8 | $48 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
19 | $44 | $246 |
| 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. |
19 | $6 | $36 |
| 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. |
18 | $7 | $41 |
| Swallowing function imaging Imaging used to evaluate how well a person can swallow. This procedure visualizes the swallowing process to assess function. |
17 | $21 | $113 |
| Removal of tunneled central venous tube This procedure involves the removal of a catheter that has been surgically placed under the skin and threaded into a large vein. |
16 | $111 | $602 |
| 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. |
16 | $7 | $38 |
| Kidney tube placement with imaging guidance A tube is placed into the kidney using imaging guidance. A radiologist reviews the procedure. |
14 | $181 | $1,005 |
| 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. |
13 | $125 | $657 |
| 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. |
13 | $9 | $48 |
| Abdominal fluid drainage by tube with imaging guidance A procedure to remove fluid from the abdominal cavity using a tube. Imaging guidance is used to direct the placement of the tube. |
12 | $159 | $838 |
| Stomach tube insertion with fluoroscopy and contrast A tube is placed into the stomach while using live X-ray imaging and a contrast dye to guide the procedure. |
12 | $168 | $875 |
| 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. |
12 | $8 | $47 |
| MRI of abdomen without contrast An MRI scan of the abdomen that uses magnetic fields and radio waves to create detailed images of internal organs and tissues without the use of contrast dye. |
11 | $59 | $306 |
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.
1.7% high complexity
47.0% medium
51.3% routine
Industry Payment Transparency
Open Payments through 2022 ↗$626
Total received (2018-2022)
Avg $157/year across 4 years
Top 30% in CA for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
7
Companies
12
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
$626 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2022
$56
2020
$15
2019
$306
2018
$249
Payments by company (2022)
Consulting
Speaking
Meals & Travel
Research
Medtronic, Inc.
$39
Telix Pharmaceuticals
$17
Top 3 companies account for 100.0% of 2022 payments
All-time payments by company (2018-2022) ›
Boston Scientific Corporation
$281
BOSTON SCIENTIFIC CORPORATION
$149
E.R. Squibb & Sons, L.L.C.
$100
Medtronic, Inc.
$39
Cardiovascular Systems Inc.
$25
Telix Pharmaceuticals
$17
Medtronic USA, Inc.
$15
Top 3 companies account for 84.7% of all-time payments
Associated products mentioned in payments ›
ANGIOJET · CLINICAL TRIAL PRODUCT · Coronary Orbital Atherectomy System · ELIQUIS · ELUVIA · EPIC VASCULAR · GENERAL THROMBECTOMY · ILLUCCIX · KYPHON Balloon Kyphoplasty · KYPHON EXPRESS II KYPHOPAK TRAY
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.
Geographic Context
Radiation oncologists within 10 mi
364
Per 100K population
11.5
County median income
$113,702
Nearest hospital
HOAG ORTHOPEDIC INSTITUTE
3.0 mi
3.0 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 2022 |
| 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. Marcus 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. Marcus experienced with chest x-ray, 1 view?
Based on Medicare claims data, Dr. Marcus performed 705 chest x-ray, 1 view 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. Marcus receive payments from pharmaceutical companies?
Yes. Dr. Marcus received a total of $626 from 7 companies across 12 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. Marcus's costs compare to other radiation oncologists in Irvine?
Dr. Marcus's average Medicare payment per service is $37. 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. Marcus) 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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