Medicare Enrolled
Dr. Carlene Gentles, M.D.
Radiation Oncology · Jacksonville, FL
Practice pattern: Mixed Practice— Diverse clinical practice across multiple procedure types
High
DATA COVERAGE
Data in 3 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. Gentles 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. Gentles
Dr. Carlene Gentles is a radiation oncology in Jacksonville, FL, with 19 years in practice. Based on federal Medicare data, Dr. Gentles performed 73,243 Medicare services across 15,472 unique beneficiaries.
The Data Coverage level for Dr. Gentles is 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.
✓ 19 years in practice▲ Top 2% volume in FL
Medicare Practice Summary
Medicare Utilization ↗73,243
Medicare services
Top 2% in FL for radiation oncology
15,472
Unique beneficiaries
$18
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~3,855 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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) | 53,150 | $0 | $1 |
| Injection, gadoteridol, (prohance multipack), per ml | 4,876 | $1 | $6 |
| 3D screening mammography (tomosynthesis) | 2,309 | $52 | $150 |
| Screening mammography | 2,306 | $125 | $372 |
| Bone density scan (DEXA) | 1,392 | $37 | $268 |
| Chest X-ray, 2 views | 669 | $23 | $96 |
| CT scan of chest, without contrast | 456 | $97 | $500 |
| Mri scan of lower spinal canal without contrast | 420 | $142 | $1,300 |
| Ultrasound scan of head and neck soft tissue | 410 | $79 | $167 |
| Ct scan of heart with evaluation of blood vessel calcium | 398 | $69 | $150 |
| Mri scan of leg joint without contrast | 325 | $145 | $1,300 |
| Ct scan of abdomen and pelvis without contrast | 300 | $137 | $500 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 296 | $39 | $150 |
| Complete ultrasound scan of 1 breast | 281 | $96 | $200 |
| X-ray of lower and sacral spine, 2-3 views | 263 | $27 | $200 |
| X-ray of knee, 1-2 views | 232 | $22 | $200 |
| Complete ultrasound scan of abdomen | 221 | $85 | $235 |
| CT scan of abdomen and pelvis with contrast | 199 | $238 | $700 |
| Mri scan of brain without contrast | 186 | $147 | $1,300 |
| Mri scan of upper spinal canal without contrast | 183 | $127 | $1,300 |
| Shoulder X-ray, 2+ views | 182 | $23 | $200 |
| Limited ultrasound scan behind abdominal cavity | 181 | $43 | $169 |
| Diagnostic mammography of both breasts | 176 | $109 | $386 |
| Ultrasound of both sides of head and neck blood flow | 171 | $134 | $479 |
| Hip X-ray, 2-3 views | 170 | $32 | $200 |
| Mri scan of arm joint without contrast | 163 | $149 | $1,300 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 149 | $84 | $320 |
| CT scan of head/brain, without contrast | 138 | $75 | $700 |
| Foot X-ray, 3+ views | 134 | $23 | $200 |
| Complete ultrasound scan of pelvis | 129 | $72 | $190 |
| Diagnostic mammography of 1 breast | 129 | $87 | $331 |
| X-ray of hand, minimum of 3 views | 125 | $26 | $200 |
| Mri scan of brain before and after contrast | 121 | $243 | $1,500 |
| Echocardiogram, transthoracic | 120 | $135 | $409 |
| Ct scan of chest with contrast | 114 | $110 | $700 |
| Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina | 112 | $85 | $190 |
| Ct scan of abdomen and pelvis before and after contrast | 111 | $267 | $700 |
| X-ray of upper spine, 2-3 views | 102 | $26 | $200 |
| Low dose ct scan of chest for lung cancer screening | 92 | $138 | $500 |
| X-ray of abdomen, 1 view | 86 | $21 | $78 |
| X-ray of middle spine, 2 views | 85 | $23 | $200 |
| Mri scan of middle spinal canal without contrast | 83 | $119 | $1,300 |
| Ct scan of face without contrast | 77 | $92 | $500 |
| X-ray of wrist, minimum of 3 views | 67 | $28 | $200 |
| Mri scan of abdomen before and after contrast | 62 | $266 | $1,500 |
| X-ray of lower and sacral spine, minimum of 4 views | 61 | $36 | $250 |
| X-ray of ankle, minimum of 3 views | 58 | $25 | $200 |
| Limited ultrasound scan of pelvis | 56 | $36 | $179 |
| Complete ultrasound of abdomen and pelvis artery and vein blood flow | 55 | $186 | $734 |
| Ct scan of lower spine without contrast | 53 | $90 | $700 |
| Ultrasound study of arm or leg veins with compression and maneuvers | 53 | $140 | $470 |
| Mri scan of leg without contrast | 47 | $169 | $1,300 |
| Complete ultrasound scan behind abdominal cavity | 47 | $77 | $228 |
| Ct scan of leg without contrast | 45 | $98 | $700 |
| X-ray of ribs on side of body, 2 views | 42 | $25 | $64 |
| Mri scan of both breasts | 39 | $272 | $1,500 |
| Ct scan of blood vessels of chest with contrast | 38 | $186 | $700 |
| X-ray of both hips, 2 views | 38 | $29 | $400 |
| Knee X-ray, 3 views | 38 | $29 | $200 |
| Ct scan of soft tissue of neck with contrast | 37 | $124 | $700 |
| Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts | 37 | $126 | $375 |
| Limited ultrasound scan of abdomen | 33 | $54 | $172 |
| Limited ultrasound scan of joint or other extremity structure except blood vessels | 29 | $32 | $150 |
| Ct scan of abdomen before and after contrast | 28 | $175 | $700 |
| X-ray of upper spine, 4-5 views | 24 | $36 | $250 |
| Mri scan of pelvis before and after contrast | 24 | $260 | $1,500 |
| Ultrasound scan of abdominal aorta | 24 | $104 | $172 |
| Ultrasound scan of scrotum | 24 | $73 | $177 |
| Mri scan of lower spinal canal before and after contrast | 23 | $251 | $1,500 |
| Mri scan of blood vessels of head without contrast | 22 | $171 | $1,300 |
| Mri scan of pelvis without contrast | 22 | $161 | $1,300 |
| X-ray of elbow, minimum of 3 views | 22 | $23 | $200 |
| X-ray of finger, minimum of 2 views | 22 | $22 | $200 |
| Ct scan of upper spine without contrast | 21 | $96 | $700 |
| Ct scan of arm without contrast | 19 | $116 | $700 |
| Ct scan of cranial cavity without contrast | 18 | $120 | $700 |
| Mri scan of arm without contrast | 18 | $217 | $1,300 |
| Mri scan of abdomen without contrast | 18 | $150 | $1,300 |
| Ct scan of pelvis without contrast | 16 | $95 | $700 |
| X-ray of sacrum and tailbone, minimum of 2 views | 16 | $22 | $200 |
| X-ray of lower leg, 2 views | 15 | $22 | $200 |
| X-ray of ribs on side of body, minimum of 3 views | 14 | $26 | $200 |
| X-ray of upper arm, minimum of 2 views | 14 | $22 | $200 |
| Ct scan of blood vessels of neck with contrast | 13 | $188 | $700 |
| Biopsy of breast and placement of locating device using ultrasound, first growth | 12 | $386 | $1,250 |
| Mri scan of bone of eye socket, face, and/or neck before and after contrast | 12 | $265 | $1,500 |
| Ct scan of blood vessels of abdomen and pelvis with contrast | 12 | $305 | $700 |
| Mri scan of upper spinal canal before and after contrast | 11 | $253 | $1,500 |
| Ct scan of abdomen with contrast | 11 | $161 | $700 |
| Ct scan of abdominal aorta and both leg arteries with contrast | 11 | $226 | $700 |
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.
0.2% high complexity
87.4% medium
12.4% routine
Geographic Context
Radiation Oncologys within 10 mi
261
Per 100K population
25.9
County median income
$68,447
Nearest hospital
SHANDS JACKSONVILLE
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 | — No payments | N/A |
| Disciplinary History | — Not public | N/A |
This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Gentles is a mixed practice specialist, with above-average Medicare volume (top 2% in FL), 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. Gentles experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Gentles performed 53,150 contrast dye for imaging (iodine-based) 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.
How do Dr. Gentles's costs compare to other radiation oncologys in Jacksonville?
Dr. Gentles's average Medicare payment per service is $18. 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 High for Dr. Gentles) 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 ↗, 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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