Dr. William Larkin
What this data tells you about Dr. Larkin
Dr. William Larkin is a radiation oncology specialist in College Station, TX, with 17 years of NPI registration. Based on federal Medicare data, Dr. Larkin performed 3,944 Medicare services across 3,790 unique beneficiaries.
Between the years covered by Open Payments, Dr. Larkin received a total of $17 from 1 pharmaceutical and/or device company across 1 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. Larkin 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 |
|---|---|---|---|
| Screening mammography | 676 | $35 | $76 |
| Chest X-ray, 1 view | 552 | $6 | $41 |
| 3D screening mammography (tomosynthesis) | 287 | $27 | $60 |
| CT scan of abdomen and pelvis with contrast | 258 | $59 | $402 |
| Bone density scan (DEXA) | 175 | $9 | $45 |
| Ct scan of chest with contrast | 149 | $38 | $273 |
| Ct scan of abdomen and pelvis without contrast | 137 | $60 | $381 |
| Chest X-ray, 2 views | 129 | $7 | $48 |
| Ct scan of blood vessels of chest with contrast | 97 | $62 | $420 |
| X-ray of abdomen, 1 view | 83 | $6 | $41 |
| Limited ultrasound scan of abdomen | 67 | $18 | $129 |
| X-ray of hand, minimum of 3 views | 66 | $5 | $34 |
| Knee X-ray, 3 views | 64 | $6 | $43 |
| Low dose ct scan of chest for lung cancer screening | 63 | $50 | $85 |
| Ultrasound scan of head and neck soft tissue | 53 | $17 | $124 |
| X-ray of knee, 1-2 views | 52 | $5 | $41 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 51 | $14 | $108 |
| Complete ultrasound scan behind abdominal cavity | 46 | $26 | $162 |
| X-ray of lower and sacral spine, 2-3 views | 38 | $6 | $54 |
| Foot X-ray, 3+ views | 38 | $5 | $35 |
| Imaging for evaluation of swallowing function | 36 | $20 | $116 |
| Shoulder X-ray, 2+ views | 35 | $5 | $44 |
| Ultrasound of both sides of head and neck blood flow | 35 | $24 | $143 |
| Ct scan of leg without contrast | 33 | $32 | $218 |
| Ct scan of abdomen before and after contrast | 33 | $44 | $307 |
| Mri scan of both breasts | 33 | $76 | $356 |
| Limited ultrasound scan of 1 breast | 32 | $20 | $161 |
| Mri scan of abdomen before and after contrast | 31 | $81 | $492 |
| Diagnostic mammography of 1 breast | 29 | $22 | $76 |
| X-ray of upper arm, minimum of 2 views | 28 | $4 | $39 |
| Ct scan of abdomen and pelvis before and after contrast | 28 | $71 | $441 |
| Ct scan of heart with evaluation of blood vessel calcium | 26 | $19 | $124 |
| Hip X-ray, 2-3 views | 25 | $7 | $74 |
| X-ray of both hips, minimum of 5 views | 25 | $9 | $62 |
| X-ray of lower leg, 2 views | 25 | $5 | $38 |
| Ct scan of pelvis without contrast | 24 | $40 | $237 |
| X-ray of foot, 2 views | 24 | $5 | $32 |
| Ultrasound study of arm or leg veins with compression and maneuvers | 24 | $24 | $170 |
| Mri scan of leg joint without contrast | 22 | $43 | $295 |
| X-ray of elbow, minimum of 3 views | 21 | $6 | $39 |
| Ultrasound scan of abdominal aorta | 21 | $25 | $127 |
| Diagnostic mammography of both breasts | 21 | $32 | $95 |
| X-ray of ribs on side of body, minimum of 3 views | 20 | $7 | $59 |
| X-ray of finger, minimum of 2 views | 20 | $3 | $30 |
| X-ray of thigh bone, minimum 2 views | 20 | $6 | $42 |
| Nuclear medicine study of stomach to assess emptying | 19 | $28 | $172 |
| X-ray of upper spine, 2-3 views | 17 | $9 | $58 |
| CT scan of chest, without contrast | 15 | $40 | $223 |
| X-ray of pelvis, 1-2 views | 15 | $5 | $42 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 15 | $22 | $60 |
| X-ray of forearm, 2 views | 14 | $5 | $37 |
| X-ray of ankle, minimum of 3 views | 14 | $4 | $39 |
| X-ray of lower and sacral spine, minimum of 4 views | 13 | $8 | $71 |
| Complete ultrasound scan of abdomen | 13 | $30 | $178 |
| Ct scan of arm without contrast | 12 | $36 | $221 |
| Mri scan of arm joint without contrast | 12 | $42 | $302 |
| X-ray of wrist, minimum of 3 views | 11 | $4 | $39 |
| Nuclear medicine study of bone and/or joint whole body | 11 | $25 | $184 |
| Ultrasound of abdomen and pelvis artery and vein blood flow | 11 | $18 | $290 |
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. Larkin is a mixed practice specialist, with above-average Medicare volume (top 24% in TX), with low-engagement industry engagement, with 17 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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