Dr. James Mazalewski, M.D.
What this data tells you about Dr. Mazalewski
Dr. James Mazalewski is a radiation oncology in Melbourne, FL, with 19 years in practice. Based on federal Medicare data, Dr. Mazalewski performed 30,886 Medicare services across 4,026 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mazalewski received a total of $131 from 1 pharmaceutical and/or device company 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. Mazalewski is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. 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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) | 19,473 | $0 | $1 |
| MRI contrast dye injection (gadoterate) | 7,390 | $0 | $1 |
| Chest X-ray, 1 view | 1,167 | $7 | $32 |
| Chest X-ray, 2 views | 356 | $20 | $66 |
| Shoulder X-ray, 2+ views | 158 | $23 | $68 |
| CT scan of chest, without contrast | 128 | $99 | $271 |
| Hip X-ray, 2-3 views | 125 | $29 | $92 |
| Ct scan of upper spine without contrast | 117 | $35 | $174 |
| X-ray of lower and sacral spine, 2-3 views | 107 | $24 | $79 |
| Complete ultrasound scan of abdomen | 106 | $78 | $230 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 102 | $16 | $82 |
| Knee X-ray, 3 views | 94 | $25 | $78 |
| CT scan of abdomen and pelvis with contrast | 89 | $231 | $621 |
| Complete ultrasound scan behind abdominal cavity | 77 | $76 | $214 |
| Foot X-ray, 3+ views | 76 | $21 | $68 |
| 3d radiographic procedure | 72 | $8 | $47 |
| X-ray of knee, 4 or more views | 68 | $33 | $91 |
| Ct scan of chest with contrast | 63 | $100 | $338 |
| Ultrasound scan of head and neck soft tissue | 63 | $78 | $219 |
| Limited ultrasound scan behind abdominal cavity | 62 | $40 | $117 |
| X-ray of abdomen, 1 view | 57 | $17 | $60 |
| Ct scan of blood vessels of neck with contrast | 55 | $63 | $298 |
| X-ray of hand, minimum of 3 views | 54 | $25 | $73 |
| Ultrasound study of arm or leg veins with compression and maneuvers | 50 | $26 | $130 |
| Ct scan of abdomen and pelvis without contrast | 42 | $132 | $375 |
| Mri scan of brain before and after contrast | 40 | $211 | $663 |
| X-ray of wrist, minimum of 3 views | 40 | $27 | $77 |
| X-ray of knee, 1-2 views | 40 | $23 | $67 |
| X-ray of upper spine, 2-3 views | 39 | $24 | $79 |
| CT scan of head/brain, without contrast | 38 | $81 | $215 |
| Low dose ct scan of chest for lung cancer screening | 34 | $133 | $279 |
| X-ray lower and sacral spine, 2-3 views bending views | 33 | $24 | $81 |
| X-ray of middle spine, 3 views | 31 | $25 | $77 |
| Computed tomography (ct) of brain blood flow, volume, and timing of flow analysis with contrast | 28 | $176 | $250 |
| X-ray of elbow, minimum of 3 views | 28 | $20 | $59 |
| X-ray of ankle, minimum of 3 views | 28 | $21 | $73 |
| Ct scan of heart with evaluation of blood vessel calcium | 26 | $74 | $200 |
| Ct scan of abdomen and pelvis before and after contrast | 25 | $267 | $695 |
| X-ray of upper spine, 4-5 views | 24 | $25 | $105 |
| X-ray of pelvis, 1-2 views | 21 | $6 | $31 |
| Ct scan of leg without contrast | 21 | $36 | $167 |
| Limited ultrasound scan of abdomen | 21 | $22 | $106 |
| X-ray of lower leg, 2 views | 18 | $6 | $29 |
| Single contrast x-ray of esophagus | 18 | $71 | $197 |
| Mri scan of lower spinal canal without contrast | 16 | $102 | $398 |
| Ct scan of middle spine without contrast | 15 | $34 | $169 |
| Complete ultrasound scan of pelvis | 15 | $77 | $208 |
| Ct scan of blood vessels of chest with contrast | 14 | $188 | $515 |
| Ct scan of lower spine without contrast | 14 | $79 | $261 |
| Ct scan of soft tissue of neck with contrast | 13 | $109 | $376 |
| X-ray of ribs on side of body, minimum of 3 views | 13 | $15 | $84 |
| X-ray of upper arm, minimum of 2 views | 13 | $7 | $31 |
| Mri scan of brain without contrast | 12 | $129 | $406 |
| Mri scan of upper spinal canal without contrast | 12 | $114 | $396 |
| X-ray of thigh bone, minimum 2 views | 12 | $7 | $32 |
| Ct scan of face without contrast | 11 | $101 | $259 |
| Ct scan of blood vessels of head with contrast | 11 | $175 | $510 |
| Nuclear medicine study of lung ventilation and circulation | 11 | $40 | $167 |
Industry Payment Transparency
Open Payments through 2021 ↗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 (2021)
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
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 2021 |
| 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 measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Mazalewski is a mixed practice specialist, with above-average Medicare volume (top 8% in FL), and low-engagement industry engagement, with 19 years of practice experience.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
Is Dr. Mazalewski experienced with contrast dye for imaging (iodine-based)?
Does Dr. Mazalewski receive payments from pharmaceutical companies?
How do Dr. Mazalewski's costs compare to other radiation oncologys in Melbourne?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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. The Transparency Score measures 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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