Matthew Blackburn, MD
Medical Oncology · Portland, ORNPI 1376076828
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $7,619 of the $10,631 with a category attached, or 71.7%. Delcath Systems accounts for 91.7% of it on its own, with 6 other manufacturers making up the rest. 2025 is the largest year on record at $9,926, more than ten times the $480 reported in 2022.
Across 12 payments — averaging $885.95 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Delcath Systems$10K
- Inari Medical, Inc.$218
- Astellas Pharma US Inc$195
- Exelixis Inc.$175
- Incyte Corporation$130
- Amgen$95
- plus $67 from 1 others
Across 17 payments — averaging $6337.71 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.
- Regeneron$108K
What the payments were for
- Travel & lodging$7,61972%
- Food & beverage$8278%
- Education$2,18621%
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 |
|---|---|---|
| Delcath Systems | 5 | $9,751 |
| Inari Medical, Inc. | 1 | $218 |
| Astellas Pharma US Inc | 2 | $195 |
| Exelixis Inc. | 1 | $175 |
| Incyte Corporation | 1 | $130 |
| Amgen | 1 | $95 |
| Karyopharm Therapeutics Inc. | 1 | $67 |
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.
- Hepzato Kit$9,578
- FLOWTRIEVER CATHETER, S$218
- CT THROMBECTOMY SYSTEM KIT$218
- Cabometyx$175
- JAKAFI$130
How this compares
$10,631 in reported general payments places this provider in the 75th percentile of 92 medical 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 |
|---|---|---|
| Abiraterone Acetate | 14 | $39,154 |
| EliquisApixaban | 28 | $23,098 |
| Letrozole | 65 | $1,575 |
| Anastrozole | 47 | $1,094 |
| Prochlorperazine Maleate | 28 | $679 |
| Oxycodone Hcl | 41 | $654 |
| Tamoxifen Citrate | 27 | $645 |
| Estradiol | 11 | $509 |
| Ondansetron Hcl | 28 | $501 |
| Dexamethasone | 23 | $278 |
| Triamcinolone Acetonide | 36 | $273 |
| LoperamideLoperamide Hcl | 17 | $247 |
| Acyclovir | 19 | $228 |
| Allopurinol | 13 | $163 |
| Prednisone | 25 | $148 |
Paid to pharmacies, not to this prescriber.
Other medical oncology in Portland
- David PagePortland$238K
- Rachel SanbornPortland$233K
- Matthew TaylorPortland$231K
- Tomasz BeerPortland$102K
- Alison ConlinPortland$85K
- Shivaani KummarPortland$66K
- Stacy LewisPortland$57K
- Hagen KenneckePortland$53K
- Adel KardoshPortland$51K
- Brendan CurtiPortland$49K
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.