Dr. R. Walker, MD
What this data tells you about Dr. Walker
Dr. R. Walker is a radiation oncology specialist in Tyler, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Walker performed 2,855 Medicare services across 2,724 unique beneficiaries.
Between the years covered by Open Payments, Dr. Walker received a total of $4,195 from 19 pharmaceutical and/or device companies across 63 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. Walker 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 |
|---|---|---|---|
| Chest X-ray, 1 view | 826 | $7 | $36 |
| X-ray of abdomen, 1 view | 190 | $7 | $36 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 177 | $10 | $50 |
| CT scan of head/brain, without contrast | 134 | $31 | $166 |
| CT scan of chest, without contrast | 83 | $40 | $203 |
| Hip X-ray, 2-3 views | 82 | $8 | $44 |
| CT scan of abdomen and pelvis with contrast | 82 | $66 | $356 |
| Shoulder X-ray, 2+ views | 72 | $7 | $37 |
| Ct scan of abdomen and pelvis without contrast | 69 | $61 | $345 |
| X-ray of knee, 1-2 views | 67 | $6 | $36 |
| X-ray of hand, minimum of 3 views | 62 | $6 | $35 |
| Foot X-ray, 3+ views | 60 | $6 | $33 |
| Ct scan of blood vessels of chest with contrast | 53 | $65 | $360 |
| Review by radiologist of ct guidance for needle placement | 50 | $55 | $227 |
| Knee X-ray, 3 views | 43 | $7 | $38 |
| Complete ultrasound scan behind abdominal cavity | 39 | $27 | $145 |
| Ct scan of upper spine without contrast | 38 | $35 | $206 |
| Chest X-ray, 2 views | 32 | $8 | $43 |
| X-ray of wrist, minimum of 3 views | 31 | $7 | $35 |
| Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin | 28 | $117 | $617 |
| X-ray of upper spine, 2-3 views | 28 | $8 | $44 |
| Limited ultrasound scan of abdomen | 28 | $21 | $117 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 28 | $16 | $89 |
| Complete ultrasound scan of abdomen | 27 | $30 | $160 |
| Bone density scan (DEXA) | 27 | $9 | $40 |
| Ct scan of chest with contrast | 26 | $42 | $235 |
| Ultrasound of both sides of head and neck blood flow | 26 | $28 | $158 |
| X-ray of lower leg, 2 views | 24 | $6 | $32 |
| X-ray of pelvis, 1-2 views | 22 | $7 | $34 |
| Ct scan of abdomen and pelvis before and after contrast | 22 | $75 | $398 |
| Needle biopsy of liver through skin | 20 | $66 | $414 |
| X-ray of lower and sacral spine, minimum of 4 views | 20 | $9 | $63 |
| Review by radiologist of image from tube placement into bile duct using an endoscope | 19 | $16 | $140 |
| Ultrasonic guidance for blood vessel access | 18 | $11 | $57 |
| X-ray of ribs on side of body, minimum of 3 views | 17 | $9 | $54 |
| X-ray of thigh bone, minimum 2 views | 17 | $6 | $38 |
| X-ray of ankle, minimum of 3 views | 17 | $7 | $35 |
| Ultrasonic guidance for needle placement | 17 | $24 | $132 |
| Fluoroscopic guidance for insertion or removal of central vein access device | 17 | $14 | $75 |
| Ct scan of lower spine without contrast | 15 | $33 | $189 |
| Insertion of central venous tube with port (5 years or older) | 14 | $254 | $1,432 |
| X-ray of lower and sacral spine, 2-3 views | 14 | $8 | $44 |
| X-ray of elbow, 2 views | 14 | $6 | $32 |
| X-ray of finger, minimum of 2 views | 14 | $4 | $28 |
| X-ray of both hips, minimum of 5 views | 14 | $10 | $64 |
| X-ray of knee, 4 or more views | 14 | $9 | $46 |
| Drainage of fluid collection of abdominal cavity by tube using imaging guidance | 13 | $149 | $854 |
| X-ray of middle spine, 2 views | 13 | $7 | $44 |
| X-ray of foot, 2 views | 13 | $6 | $31 |
| Ultrasound of leg arteries or artery grafts | 13 | $29 | $156 |
| X-ray of upper spine, 4-5 views | 11 | $10 | $63 |
| Ct scan of middle spine without contrast | 11 | $32 | $199 |
| X-ray of upper arm, minimum of 2 views | 11 | $6 | $33 |
| X-ray of ankle, 2 views | 11 | $6 | $33 |
| Ct scan of blood vessels of abdomen and pelvis with contrast | 11 | $81 | $434 |
| Ultrasound scan of scrotum | 11 | $24 | $126 |
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.
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. Walker is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement in the top 13% 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
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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 ↗, 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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