Fen Xia, MD
Radiation Oncology · Little Rock, ARNPI 1134156052
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (53.6%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. 9 manufacturers reported payments, led by IBA Proton Therapy, Inc. at 27.0% of the total. Reporting peaked in 2023 at $1,518 and has fallen 66.7% since, to $505 in 2025. Among radiation oncology clinicians in AR with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 14 payments — averaging $290.33 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- IBA Proton Therapy, Inc.$1K
- Ion Beam Applications S.A.$935
- GT Medical Technologies, Inc$902
- Brainlab, Inc.$466
- Novocure Inc.$358
- Roche Diagnostics Corporation$120
- plus $188 from 3 others
What the payments were for
- Speaking & faculty fees$1,41935%
- Travel & lodging$46611%
- Food & beverage$2,18054%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| IBA Proton Therapy, Inc. | 2 | $1,097 |
| Ion Beam Applications S.A. | 1 | $935 |
| GT Medical Technologies, Inc | 2 | $902 |
| Brainlab, Inc. | 2 | $466 |
| Novocure Inc. | 3 | $358 |
| Roche Diagnostics Corporation | 1 | $120 |
| Monteris Medical Corporation | 1 | $99 |
| Reflexion Medical, Inc. | 1 | $69 |
| Pfizer | 1 | $19 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- GammaTile$902
- Brainlab, Inc.$431
- Optune$284
How this compares
$4,065 in reported general payments places this provider in the 95th percentile of 45 radiation oncology providers in Arkansas.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other radiation oncology in Little Rock
- Mausam PatelLittle Rock$3K
- Brent CameronLittle Rock$3K
- Christopher PopeLittle Rock$2K
- Matthew HardeeLittle Rock$2K
- Mark StoreyLittle Rock$2K
- Leslie HarrellLittle Rock$1K
- Michael MayLittle Rock$1K
- Howard MorganLittle Rock$1K
- Jonathan PaganLittle Rock$1K
- James CordovaLittle Rock$819
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.