Joshua Walker, MD
Radiation Oncology · Portland, ORNPI 1962848655
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $6,500 of the $8,912 with a category attached, or 72.9%. Novocure Inc. accounts for 94.3% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2020 at $7,591 and has fallen 94.8% since, to $398 in 2025. Among radiation oncology clinicians in OR 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 17 payments — averaging $524.25 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novocure Inc.$8K
- Siemens Medical Solutions USA, Inc.$233
- Telix Pharmaceuticals$165
- Blue Earth Diagnostics$91
- Elekta, Inc.$9
- Canon Medical Systems USA, Inc.$9
What the payments were for
- Speaking & faculty fees$6,50073%
- Travel & lodging$1,49717%
- Food & beverage$91510%
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 |
|---|---|---|
| Novocure Inc. | 11 | $8,406 |
| Siemens Medical Solutions USA, Inc. | 2 | $233 |
| Telix Pharmaceuticals | 1 | $165 |
| Blue Earth Diagnostics | 1 | $91 |
| Elekta, Inc. | 1 | $9 |
| Canon Medical Systems USA, Inc. | 1 | $9 |
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.
- Oncology$8,117
- ILLUCCIX$329
- Optune Gio$285
- Varian Ethos Treatment Planning$147
How this compares
$8,912 in reported general payments places this provider in the 95th percentile of 93 radiation oncology providers in Oregon.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Dexamethasone | 19 | $307 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Portland
- Marka CrittendenPortland$20K
- Steven SeungPortland$11K
- Andrew KeePortland$7K
- Brandon DyerPortland$4K
- Nima NabavizadehPortland$4K
- Amar SrivastavaPortland$4K
- Re-I ChinPortland$3K
- Akanksha RajeursPortland$2K
- Matthew SolhjemPortland$2K
- Kristina YoungPortland$2K
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.