Thorvardur Halfdanarson, MD
Medical Oncology · Rochester, MNNPI 1083684187
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (51.8%), travel and lodging and speaking fees — rather than concentrated in one kind of arrangement. It is spread thinly across 14 manufacturers, the largest accounting for just 20.9%. Among medical oncology clinicians in MN 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 68 payments — averaging $1271.30 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Exelixis Inc.$18K
- Sanofi$17K
- Terumo Medical Corporation$16K
- Curium US LLC$10K
- Tersera Therapeutics LLC$8K
- Advanced Accelerator Applications$6K
- plus $12K from 8 others
Across 191 payments — averaging $16,794 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.
- E.r. Squibb & Sons, L.L.C.$1.4M
- Brahms GmbH$685K
- Amgen$367K
- Array Biopharma Inc$186K
- Novartis$173K
- Servier Bioinnovation$158K
- plus $205K from 7 others
What the payments were for
- Consulting fees$44,75852%
- Speaking & faculty fees$16,35019%
- Travel & lodging$23,22027%
- Food & beverage$2,1202%
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 |
|---|---|---|
| Exelixis Inc. | 19 | $18,084 |
| Sanofi | 4 | $16,790 |
| Terumo Medical Corporation | 5 | $16,300 |
| Curium US LLC | 17 | $9,684 |
| Tersera Therapeutics LLC | 5 | $7,561 |
| Advanced Accelerator Applications | 2 | $5,640 |
| Boehringer Ingelheim | 2 | $4,810 |
| E.r. Squibb & Sons, L.L.C. | 3 | $3,719 |
| Lexicon Pharmaceuticals, Inc. | 4 | $1,712 |
| Boehringer Ingelheim International GmbH | 1 | $1,480 |
| Ipsen Biopharmaceuticals, Inc | 3 | $348 |
| Genentech USA, Inc. | 1 | $125 |
| Novartis | 1 | $125 |
| AstraZeneca | 1 | $72 |
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.
- Cabometyx$17,013
- Xermelo$6,085
- Lutathera$5,765
- Cu64 Dotatate$4,786
- Detectnet$4,500
- QUZYTTIR$1,746
- ONIVYDE$145
- SOMATULINE DEPOT$145
- Avastin$125
How this compares
$86,448 in reported general payments places this provider in the 90th percentile of 133 medical oncology providers in Minnesota.
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 |
|---|---|---|
| XermeloTelotristat Etiprate | 16 | $146,841 |
| EliquisApixaban | 15 | $16,265 |
| Colestipol Hcl | 24 | $2,201 |
| Ondansetron Hcl | 14 | $54 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Tersera Therapeutics LLCXermelo | $7,561 | $146,84116 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 90th percentile of 133 medical oncology providers in Minnesota.
Other medical oncology in Rochester
- Amit MahipalRochester$746K
- Alton SartorRochester$688K
- Ben GeorgeRochester$579K
- Elisabeth HeathRochester$236K
- Matthew GoetzRochester$136K
- Harry YoonRochester$69K
- Karthik GiridharRochester$66K
- Joleen HubbardRochester$59K
- Lionel Aurelien Kankeu FonkouaRochester$58K
- Kaushal ParikhRochester$55K
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.