Timothy Larson, MD
Hematology & Oncology · Minneapolis, MNNPI 1326130204
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $8,674 of the $9,908 with a category attached, or 87.5%. Genentech USA, Inc. accounts for 87.4% of it on its own, with 6 other manufacturers making up the rest. 2025 is the largest year on record at $8,904, more than ten times the $12 reported in 2021.
Across 10 payments — averaging $990.77 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Genentech USA, Inc.$9K
- Amgen$649
- Beigene USA, Inc.$223
- Genentech, Inc.$164
- AbbVie$120
- Tempus AI, Inc$79
- plus $12 from 1 others
Across 1,390 payments — averaging $5179.24 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.
- Genentech, Inc.$2.3M
- E.r. Squibb & Sons, L.L.C.$1.4M
- Amgen$851K
- Eli Lilly$810K
- Merck$506K
- Mirati Therapeutics, Inc.$377K
- plus $1M from 18 others
What the payments were for
- Consulting fees$8,67488%
- Grants$1201%
- Travel & lodging$5736%
- Food & beverage$5295%
- Education$120%
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 |
|---|---|---|
| Genentech USA, Inc. | 3 | $8,661 |
| Amgen | 1 | $649 |
| Beigene USA, Inc. | 2 | $223 |
| Genentech, Inc. | 1 | $164 |
| AbbVie | 1 | $120 |
| Tempus AI, Inc | 1 | $79 |
| Gilead | 1 | $12 |
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.
How this compares
$9,908 in reported general payments places this provider in the 85th percentile of 193 hematology & 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 |
|---|---|---|
| ImbruvicaIbrutinib | 14 | $217,753 |
| EliquisApixaban | 14 | $9,078 |
| Tamoxifen Citrate | 15 | $634 |
| Prochlorperazine Maleate | 14 | $366 |
| Dexamethasone | 28 | $226 |
| Ondansetron Hcl | 23 | $216 |
| Letrozole | 14 | $204 |
| Lorazepam | 16 | $62 |
| Olanzapine | 16 | $34 |
Paid to pharmacies, not to this prescriber.
Other hematology & oncology in Minneapolis
- Mark RedingMinneapolis$519K
- Shilpa GuptaMinneapolis$421K
- Vicki MorrisonMinneapolis$354K
- Aimee MerinoMinneapolis$161K
- Daniel WeisdorfMinneapolis$64K
- Gautam JhaMinneapolis$55K
- Arpit RaoMinneapolis$46K
- Amit KulkarniMinneapolis$40K
- Gregory VercellottiMinneapolis$34K
- Veronika BachanovaMinneapolis$33K
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.