David Weinstock
Medical Oncology · Boston, MANPI 1295707529
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $6,050 of the $6,385 with a category attached, or 94.8%. 6 manufacturers reported payments, led by Daiichi Sankyo Inc. at 48.9% of the total. Reporting peaked in 2020 at $3,125 and has fallen 90.8% since, to $287 in 2023.
Across 16 payments — averaging $399.06 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Daiichi Sankyo Inc.$3K
- AstraZeneca$2K
- Partner Therapeutics, Inc.$1K
- Taiho Oncology, Inc.$287
- Merck$32
- Johnson & Johnson$16
Across 5 payments — averaging $130,472 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.
- Daiichi Sankyo Company LTD$465K
- AstraZeneca$187K
- Taiho Oncology, Inc.$20
What the payments were for
- Consulting fees$6,05095%
- Travel & lodging$801%
- Food & beverage$2554%
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 |
|---|---|---|
| Daiichi Sankyo Inc. | 1 | $3,125 |
| AstraZeneca | 1 | $1,800 |
| Partner Therapeutics, Inc. | 1 | $1,125 |
| Taiho Oncology, Inc. | 11 | $287 |
| Merck | 1 | $32 |
| Johnson & Johnson | 1 | $16 |
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.
- Leukine$1,125
How this compares
$6,385 in reported general payments places this provider in the 60th percentile of 308 medical oncology providers in Massachusetts.
Other medical oncology in Boston
- George DemetriBoston$1.6M
- Keith FlahertyBoston$932K
- Alicia MorgansBoston$690K
- Pasi Antero JanneBoston$458K
- Robert HaddadBoston$451K
- Irene GhobrialBoston$431K
- Joaquin Bellmunt MolinsBoston$415K
- Jeremy AbramsonBoston$334K
- Justin GainorBoston$324K
- Narjust FlorezBoston$324K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.