William Hahn
Medical Oncology · Boston, MANPI 1457313652
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $80,012 of the $96,965 with a category attached, or 82.5%. Jubilant Therapeutics Inc accounts for 83.4% of it on its own, with 4 other manufacturers making up the rest. 2025 is the largest year on record at $38,500, 6.5 times the $5,968 reported in 2019.
Across 21 payments — averaging $4617.39 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Jubilant Therapeutics Inc$81K
- Genentech, Inc.$8K
- Sanofi-aventis U.S. LLC$4K
- Merck$2K
- Pfizer$2K
Across 55 payments — averaging $15,773 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.
- Pfizer$525K
- Eli Lilly$300K
- AbbVie$35K
- Tesaro, Inc.$6K
- GSK$1K
What the payments were for
- Consulting fees$14,09415%
- Speaking & faculty fees$80,01283%
- Travel & lodging$2,7693%
- Food & beverage$900%
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 |
|---|---|---|
| Jubilant Therapeutics Inc | 11 | $80,898 |
| Genentech, Inc. | 5 | $8,500 |
| Sanofi-aventis U.S. LLC | 2 | $3,568 |
| Merck | 2 | $2,400 |
| Pfizer | 1 | $1,600 |
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.
- NO PRODUCT DISCUSSED$3,534
- KEYTRUDA$2,400
How this compares
$96,965 in reported general payments places this provider in the 80th 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.