Dr. Matthew Karlen, MD
What this data tells you about Dr. Karlen
Dr. Matthew Karlen is a radiation oncology specialist in Tampa, FL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Karlen performed 5,035 Medicare services across 4,059 unique beneficiaries.
The Data Coverage level for Dr. Karlen 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.
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 |
|---|---|---|---|
| Chest X-ray, 1 view | 1,890 | $7 | $50 |
| Screening mammography | 337 | $36 | $253 |
| X-ray of abdomen, 1 view | 299 | $7 | $46 |
| 3D screening mammography (tomosynthesis) | 284 | $29 | $155 |
| Bone density scan (DEXA) | 158 | $9 | $74 |
| Chest X-ray, 2 views | 148 | $8 | $55 |
| Complete ultrasound scan behind abdominal cavity | 133 | $27 | $267 |
| Ultrasound of both sides of head and neck blood flow | 115 | $29 | $230 |
| Imaging for evaluation of swallowing function | 105 | $20 | $193 |
| CT scan of head/brain, without contrast | 100 | $31 | $314 |
| Ultrasound study of arm or leg veins with compression and maneuvers | 94 | $25 | $263 |
| CT scan of chest, without contrast | 90 | $40 | $425 |
| Limited ultrasound scan of abdomen | 88 | $21 | $217 |
| CT scan of abdomen and pelvis with contrast | 77 | $66 | $894 |
| Ct scan of abdomen and pelvis without contrast | 73 | $65 | $835 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 73 | $21 | $160 |
| Nuclear medicine study of parathyroid | 69 | $29 | $308 |
| X-ray of knee, 1-2 views | 65 | $6 | $67 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 60 | $16 | $173 |
| Diagnostic mammography of both breasts | 55 | $31 | $317 |
| Ultrasound scan of head and neck soft tissue | 48 | $20 | $209 |
| Diagnostic mammography of 1 breast | 46 | $27 | $259 |
| Ultrasound scan of transplanted kidney | 42 | $28 | $267 |
| Ct scan of lower spine without contrast | 38 | $36 | $425 |
| Mri scan of abdomen without contrast | 33 | $55 | $532 |
| 3d radiographic procedure | 30 | $7 | $74 |
| Hip X-ray, 2-3 views | 28 | $8 | $60 |
| Complete ultrasound scan of 1 breast | 28 | $30 | $240 |
| Complete ultrasound scan of abdomen | 27 | $30 | $304 |
| Ct scan of upper spine without contrast | 26 | $37 | $425 |
| Knee X-ray, 3 views | 25 | $7 | $68 |
| Mri scan of brain without contrast | 24 | $55 | $549 |
| Limited ultrasound scan of 1 breast | 24 | $26 | $194 |
| Ct scan of blood vessels of chest with contrast | 22 | $64 | $707 |
| Ct scan of middle spine without contrast | 22 | $36 | $425 |
| Nuclear medicine study of liver and bile duct system | 22 | $26 | $229 |
| Ct scan of abdomen and pelvis before and after contrast | 21 | $76 | $958 |
| Ct scan of chest with contrast | 20 | $38 | $460 |
| Ultrasound of abdomen and pelvis artery and vein blood flow | 20 | $30 | $446 |
| Mri scan of lower spinal canal without contrast | 17 | $56 | $549 |
| Ultrasound of leg arteries or artery grafts | 17 | $30 | $224 |
| X-ray of lower and sacral spine, 2-3 views | 16 | $8 | $80 |
| Limited ultrasound scan behind abdominal cavity | 16 | $22 | $215 |
| Nuclear medicine study of lung circulation | 16 | $26 | $270 |
| Ct scan of blood vessels of abdomen and pelvis with contrast | 15 | $77 | $693 |
| Mri scan of abdomen before and after contrast | 15 | $74 | $830 |
| Shoulder X-ray, 2+ views | 14 | $7 | $68 |
| Ct scan of pelvis without contrast | 13 | $41 | $402 |
| X-ray of wrist, minimum of 3 views | 13 | $6 | $67 |
| Foot X-ray, 3+ views | 13 | $6 | $67 |
| Mri scan of middle spinal canal without contrast | 11 | $55 | $590 |
Geographic Context
1.3 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. Karlen is a mixed practice specialist, with moderate Medicare volume, with 19 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
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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 ↗, 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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