David Siker, MD
Diagnostic Radiology · Portland, ORNPI 1427031467
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $2,089 of the $3,159 with a category attached, or 66.1%. 7 manufacturers reported payments, led by Stryker at 35.6% of the total. Reporting peaked in 2019 at $1,437 and has fallen 83.6% since, to $236 in 2025. Among diagnostic radiology clinicians in OR with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 52 payments — averaging $60.75 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$1K
- Microvention, Inc.$1K
- Medtronic$399
- Penumbra, Inc.$349
- Balt USA, LLC$128
- Shockwave Medical, Inc$20
- plus $20 from 1 others
Across 3 payments — averaging $6916.67 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Stryker$21K
What the payments were for
- Travel & lodging$1,07034%
- Food & beverage$2,08966%
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 |
|---|---|---|
| Stryker | 30 | $1,126 |
| Microvention, Inc. | 5 | $1,117 |
| Medtronic(2 entities) | 10 | $399 |
| Penumbra, Inc. | 4 | $349 |
| Balt USA, LLC | 1 | $128 |
| Shockwave Medical, Inc | 1 | $20 |
| Pfizer | 1 | $20 |
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.
- WEB$1,035
- TARGET$265
- Pipeline$263
- TREVO$231
- Penumbra System$150
- Benchmark$149
- Carrier Delivery Catheter$128
- SURPASS EVOLVE$122
- AXS VECTA 71$122
- CATALYST$109
How this compares
$3,159 in reported general payments places this provider in the 90th percentile of 354 diagnostic radiology 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.
Other diagnostic radiology in Portland
- Alexander GuimaraesPortland$122K
- H LipshutzPortland$79K
- Csanad VarallyayPortland$69K
- Joseph WhetstonePortland$28K
- Raman KansalPortland$16K
- Steven ZinckPortland$15K
- Cristina FussPortland$15K
- Daniel HillmanPortland$14K
- Nadine MallakPortland$12K
- Teodora BochnakovaPortland$10K
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.