Dr. John Mawn, M.D
What this data tells you about Dr. Mawn
Dr. John Mawn is a radiation oncology specialist in Fort Walton Beach, FL, with 14 years of NPI registration. Based on federal Medicare data, Dr. Mawn performed 5,270 Medicare services across 4,962 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mawn received a total of $75 from 2 pharmaceutical and/or device companies 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. Mawn 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 |
|---|---|---|---|
| 3D screening mammography (tomosynthesis) | 784 | $28 | $41 |
| Screening mammography | 779 | $36 | $49 |
| Chest X-ray, 1 view | 587 | $7 | $14 |
| Bone density scan (DEXA) | 543 | $9 | $20 |
| Chest X-ray, 2 views | 227 | $8 | $17 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 157 | $20 | $41 |
| Diagnostic mammography of 1 breast | 133 | $29 | $52 |
| Limited ultrasound scan of 1 breast | 127 | $25 | $55 |
| X-ray of knee, 4 or more views | 116 | $8 | $20 |
| Complete ultrasound scan of 1 breast | 114 | $34 | $99 |
| Shoulder X-ray, 2+ views | 89 | $7 | $16 |
| Hip X-ray, 2-3 views | 86 | $8 | $20 |
| Knee X-ray, 3 views | 85 | $7 | $16 |
| CT scan of head/brain, without contrast | 81 | $29 | $68 |
| Diagnostic mammography of both breasts | 72 | $32 | $65 |
| Foot X-ray, 3+ views | 66 | $6 | $13 |
| X-ray of wrist, minimum of 3 views | 60 | $6 | $14 |
| CT scan of chest, without contrast | 56 | $38 | $84 |
| Nuclear medicine study from skull base to mid-thigh with ct scan | 56 | $88 | $201 |
| X-ray of ankle, minimum of 3 views | 47 | $6 | $14 |
| Ultrasound of both sides of head and neck blood flow | 43 | $27 | $59 |
| X-ray of lower and sacral spine, minimum of 4 views | 41 | $9 | $26 |
| Ct scan of abdomen and pelvis without contrast | 40 | $62 | $138 |
| CT scan of abdomen and pelvis with contrast | 39 | $61 | $146 |
| X-ray of hand, minimum of 3 views | 38 | $6 | $14 |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | 38 | $57 | $167 |
| Ct scan of upper spine without contrast | 37 | $34 | $87 |
| Ct scan of blood vessels of chest with contrast | 34 | $60 | $156 |
| Ct scan of blood vessels of head with contrast | 32 | $63 | $141 |
| Low dose ct scan of chest for lung cancer screening | 31 | $51 | $68 |
| X-ray of wrist, 2 views | 31 | $6 | $15 |
| X-ray of abdomen, 1 view | 31 | $7 | $18 |
| X-ray of hand, 2 views | 30 | $6 | $13 |
| Complete ultrasound scan behind abdominal cavity | 30 | $22 | $60 |
| Ct scan of blood vessels of neck with contrast | 29 | $61 | $142 |
| Biopsy of breast and placement of locating device using ultrasound, first growth | 27 | $117 | $219 |
| Imaging of urinary tract following injection of a contrast agent | 27 | $17 | $31 |
| Ultrasound scan of head and neck soft tissue | 27 | $18 | $45 |
| Complete ultrasound scan of abdomen | 25 | $24 | $66 |
| Mri scan of brain before and after contrast | 24 | $78 | $191 |
| X-ray of thigh bone, minimum 2 views | 23 | $7 | $15 |
| Double contrast x-ray of upper digestive tract | 22 | $31 | $56 |
| Ct scan of chest with contrast | 20 | $42 | $101 |
| Mri scan of lower spinal canal without contrast | 20 | $55 | $122 |
| X-ray of foot, 2 views | 20 | $6 | $12 |
| Biopsy of breast and placement of locating device using x-ray with needle, first growth | 18 | $128 | $230 |
| X-ray of middle spine, 3 views | 18 | $9 | $17 |
| X-ray of lower and sacral spine, 2-3 views | 18 | $8 | $20 |
| X-ray of knee, 1-2 views | 18 | $6 | $16 |
| X-ray of lower leg, 2 views | 16 | $6 | $14 |
| Limited ultrasound scan of abdomen | 16 | $19 | $47 |
| Ct scan of face without contrast | 15 | $30 | $92 |
| X-ray of both hips, minimum of 5 views | 15 | $11 | $27 |
| X-ray of upper spine, 4-5 views | 14 | $10 | $26 |
| Mri scan of both breasts | 14 | $62 | $165 |
| X-ray of elbow, minimum of 3 views | 13 | $6 | $14 |
| X-ray series of abdomen with single x-ray of chest | 13 | $12 | $25 |
| Review by radiologist of bile and/or pancreatic duct image during surgery | 13 | $7 | $30 |
| Mri scan of brain without contrast | 12 | $50 | $120 |
| Ct scan of lower spine without contrast | 11 | $36 | $82 |
| X-ray of finger, minimum of 2 views | 11 | $5 | $11 |
| Ct scan of abdomen and pelvis before and after contrast | 11 | $73 | $160 |
Industry Payment Transparency
Open Payments through 2022 ↗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 (2022)
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 2022 |
| 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. Mawn is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement.
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. Mawn experienced with 3d screening mammography (tomosynthesis)?
Does Dr. Mawn receive payments from pharmaceutical companies?
How do Dr. Mawn's costs compare to other radiation oncologists in Fort Walton Beach?
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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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