Dr. John Thomas, M.D.
What this data tells you about Dr. Thomas
Dr. John Thomas is a radiation oncology specialist in San Antonio, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Thomas performed 4,053 Medicare services across 984 unique beneficiaries.
Between the years covered by Open Payments, Dr. Thomas received a total of $7,357 from 20 pharmaceutical and/or device companies across 82 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. Thomas 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) | 3,050 | $0 | $0 |
| Chest X-ray, 1 view | 275 | $6 | $35 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 115 | $9 | $98 |
| CT scan of abdomen and pelvis with contrast | 77 | $66 | $353 |
| Ct scan of abdomen and pelvis without contrast | 66 | $58 | $337 |
| Fluoroscopic guidance for insertion or removal of central vein access device | 60 | $14 | $72 |
| Ultrasonic guidance for blood vessel access | 59 | $11 | $56 |
| Review by radiologist of ct guidance for needle placement | 40 | $53 | $221 |
| Aspiration of fluid from chest cavity using imaging guidance | 36 | $84 | $450 |
| Chest X-ray, 2 views | 24 | $8 | $42 |
| Drainage of fluid from abdominal cavity using imaging guidance | 23 | $79 | $426 |
| Insertion of tunneled central venous tube for infusion (5 years or older) | 22 | $196 | $1,032 |
| Biopsy and aspiration of bone marrow sample for diagnosis | 22 | $58 | $305 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 21 | $65 | $384 |
| CT scan of chest, without contrast | 20 | $38 | $226 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 17 | $16 | $87 |
| Drainage of fluid collection of abdominal cavity by tube using imaging guidance | 15 | $137 | $777 |
| Insertion of tube into abdominal, pelvic, or leg artery, initial third order branch | 14 | $163 | $1,798 |
| Ultrasound of one leg arteries or artery grafts | 14 | $17 | $94 |
| Ct scan of blood vessels of chest with contrast | 13 | $172 | $1,367 |
| Ultrasonic guidance for needle placement | 13 | $23 | $125 |
| Drainage of fluid from chest cavity with insertion of indwelling tube using imaging guidance | 12 | $113 | $597 |
| Insertion of central venous tube with port (5 years or older) | 12 | $251 | $1,334 |
| Insertion of vena cava filter with review by radiologist | 11 | $151 | $889 |
| Ct scan of chest with contrast | 11 | $41 | $240 |
| Ct scan of blood vessels of abdomen and pelvis with contrast | 11 | $289 | $1,783 |
Industry Payment Transparency
Open Payments through 2024 ↗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 (2024)
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 9% for radiation oncology in TX.
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 2024 |
| 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. Thomas is a mixed practice specialist, with above-average Medicare volume (top 23% in TX), with low-engagement industry engagement in the top 9% of TX peers, 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. Thomas experienced with contrast dye for imaging (iodine-based)?
Does Dr. Thomas receive payments from pharmaceutical companies?
How do Dr. Thomas's costs compare to other radiation oncologists in San Antonio?
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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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