Dr. Margo Roca, MD
What this data tells you about Dr. Roca
Dr. Margo Roca is a radiation oncology specialist in El Segundo, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Roca performed 4,055 Medicare services across 4,008 unique beneficiaries.
Between the years covered by Open Payments, Dr. Roca received a total of $342 from 7 pharmaceutical and/or device companies across 11 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. Roca 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.
Medicare Practice Summary
Medicare Utilization ↗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. |
1,365 | $29 | $176 |
| Screening mammography An X-ray of the breast used to detect breast cancer in women who have no signs or symptoms of the disease. |
1,365 | $38 | $262 |
| Digital breast tomosynthesis (3D mammogram) A specialized imaging test that creates three-dimensional pictures of the breast tissue to help detect abnormalities. |
267 | $23 | $206 |
| 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. |
201 | $7 | $139 |
| MRI scan of both breasts A magnetic resonance imaging test that creates detailed pictures of both breasts to help evaluate breast tissue. |
178 | $85 | $878 |
| Diagnostic mammography of 1 breast An X-ray examination of one breast to evaluate specific breast symptoms or abnormalities. |
170 | $34 | $282 |
| Limited ultrasound of 1 breast A focused ultrasound examination of a single breast to evaluate specific areas of concern. |
150 | $30 | $439 |
| Diagnostic mammography of both breasts | 119 | $38 | $357 |
| 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. |
48 | $17 | $111 |
| X-ray of surgical specimen | 34 | $12 | $92 |
| 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. |
23 | $120 | $2,842 |
| Swallowing function imaging Imaging used to evaluate how well a person can swallow. This procedure visualizes the swallowing process to assess function. |
21 | $20 | $255 |
| Limited ultrasound of joint or extremity A focused ultrasound exam of a specific joint or other structure in the arm or leg, excluding blood vessels. |
18 | $26 | $364 |
| Breast biopsy with localization device using X-ray A procedure to remove a sample of breast tissue for testing, using X-ray guidance to place a device that marks the location of the first growth. |
17 | $130 | $2,952 |
| 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. |
15 | $23 | $96 |
| 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 | $21 | $84 |
| 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 | $78 | $1,330 |
| 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 | $70 | $565 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
12 | $7 | $139 |
| Lymphatic system nuclear medicine study A nuclear medicine imaging test used to evaluate the structure and function of the lymphatic system. |
11 | $44 | $833 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
3.7 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. Roca is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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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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