Medicare Enrolled

Dr. Sion Carter, M.D.

Radiation Oncology · Zephyrhills, FL
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
38135 MARKET SQ, Zephyrhills, FL 33542
8137828829
In practice since 2006 (20 years)
NPI: 1407821416 verify on NPPES ↗
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. Carter 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. Carter

Dr. Sion Carter is a radiation oncology specialist in Zephyrhills, FL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Carter performed 20,967 Medicare services across 3,616 unique beneficiaries.

The Data Coverage level for Dr. Carter 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.

✓ 20 years in practice ▲ Top 11% volume in FL

Florida License Status

FL DOH · MQA
1
Active license
None
Board action on record
0
Recent admin complaints
Profession License # Status Expires Board Action
Medical Doctor 59152 Clear January 31, 2028 —
Data from Florida Department of Health Medical Quality Assurance. License records are public under Chapter 119, Florida Statutes. Verify directly on FL DOH →

Medicare Practice Summary

Medicare Utilization ↗
20,967
Medicare services
Top 11% in FL for radiation oncology
3,616
Unique beneficiaries
$13
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~1,048 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) 15,894 $0 $1
Injection, gadobenate dimeglumine (multihance), per ml 1,513 $1 $5
Chest X-ray, 2 views 491 $23 $78
3D screening mammography (tomosynthesis) 190 $51 $137
Screening mammography 189 $123 $270
Foot X-ray, 3+ views 176 $24 $77
CT scan of chest, without contrast 149 $96 $391
X-ray of lower and sacral spine, minimum of 4 views 146 $36 $126
Bone density scan (DEXA) 121 $36 $99
X-ray of hand, minimum of 3 views 115 $25 $82
X-ray of wrist, minimum of 3 views 97 $29 $90
Shoulder X-ray, 2+ views 94 $24 $74
3d radiographic procedure with computerized image postprocessing 81 $58 $178
Limited ultrasound scan of abdomen 81 $62 $224
Ultrasound scan of head and neck soft tissue 79 $72 $283
Knee X-ray, 3 views 76 $27 $92
Hip X-ray, 2-3 views 73 $33 $105
Ct scan of leg without contrast 70 $88 $397
Ultrasound of both sides of head and neck blood flow 64 $133 $496
X-ray of middle spine, 3 views 60 $28 $94
Limited ultrasound scan behind abdominal cavity 54 $44 $146
Mri scan of leg joint without contrast 50 $150 $486
Limited ultrasound scan of pelvis 50 $27 $122
Mri scan of lower spinal canal without contrast 48 $141 $544
Ultrasound study of arm or leg veins with compression and maneuvers 47 $130 $479
X-ray of upper spine, 4-5 views 46 $35 $124
X-ray of ankle, minimum of 3 views 45 $26 $82
Ct scan of abdomen and pelvis before and after contrast 42 $260 $884
Complete ultrasound scan of abdomen 42 $75 $300
CT scan of abdomen and pelvis with contrast 41 $235 $783
Mri scan of abdomen before and after contrast 35 $251 $980
Ultrasound study of one arm or leg veins with compression and maneuvers 35 $77 $297
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) 34 $40 $137
X-ray of knee, 4 or more views 32 $34 $102
Ct scan of chest with contrast 30 $101 $483
Complete ultrasound study of arm and leg arteries 30 $82 $329
CT scan of head/brain, without contrast 29 $72 $286
Mri scan of arm joint without contrast 28 $143 $573
Ct scan of abdomen and pelvis without contrast 28 $134 $496
X-ray of both hips, 3-4 views 27 $36 $123
Mri scan of pelvis before and after contrast 26 $264 $979
Ct scan of face without contrast 25 $98 $342
X-ray of joint between lower spine and hip bone, 3 or more views 25 $28 $86
Limited ultrasound scan of 1 breast 25 $68 $217
Mri scan of brain without contrast 24 $156 $557
Limited ultrasound scan of joint or other extremity structure except blood vessels 24 $33 $143
Low dose ct scan of chest for lung cancer screening 23 $137 $363
Mri scan of brain before and after contrast 21 $232 $912
Mri scan of upper spinal canal without contrast 21 $135 $544
X-ray of upper spine, 6 or more views 20 $44 $148
Diagnostic mammography of both breasts 20 $116 $335
Injection, furosemide, up to 20 mg 20 $0 $1
Nuclear medicine study from skull base to mid-thigh with ct scan 18 $1,175 $3,579
Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries 18 $401 $1,278
Ultrasound scan of abdominal aorta 17 $102 $278
X-ray of ribs on side of body, minimum of 3 views 15 $32 $97
X-ray of abdomen, 1 view 15 $21 $70
X-ray of sacrum and tailbone, minimum of 2 views 14 $19 $75
X-ray of elbow, minimum of 3 views 14 $25 $74
Diagnostic mammography of 1 breast 14 $93 $266
Mri scan of leg without contrast 13 $167 $643
Ct scan of blood vessels of chest with contrast 12 $178 $715
Technetium tc-99m medronate, diagnostic, per study dose, up to 30 millicuries 11 $33 $112
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.
Looking for a radiation oncology specialist in Zephyrhills?
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Geographic Context

Radiation oncologists within 10 mi
225
Per 100K population
38.2
County median income
$67,384
Nearest hospital
Adventhealth Zephyrhills
2.7 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. Carter is a mixed practice specialist, with above-average Medicare volume (top 11% in FL), with 20 years of NPI registration.

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. Carter experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Carter performed 15,894 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. Carter's costs compare to other radiation oncologists in Zephyrhills?
Dr. Carter's average Medicare payment per service is $13. 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. Carter) 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.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →