Robert Hasserjian, MD
Hematology · Boston, MANPI 1285625574
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $23,705 of the $25,096 with a category attached, or 94.5%. 8 manufacturers reported payments, led by Jazz Pharmaceuticals Inc. at 32.6% of the total. Reporting peaked in 2024 at $9,434 and has fallen 99.7% since, to $30 in 2025.
Across 28 payments — averaging $896.30 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Jazz Pharmaceuticals Inc.$8K
- Genetix Biotherapeutics Inc$6K
- Amgen$4K
- Servier Pharmaceuticals LLC$3K
- Daiichi Sankyo Inc.$2K
- AbbVie$2K
- plus $329 from 2 others
Across 1 payment — averaging $4557.24 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.
- F. Hoffmann-la Roche AG$5K
What the payments were for
- Consulting fees$23,70594%
- Travel & lodging$1,0034%
- Food & beverage$3882%
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 |
|---|---|---|
| Jazz Pharmaceuticals Inc. | 10 | $8,192 |
| Genetix Biotherapeutics Inc | 1 | $6,300 |
| Amgen | 8 | $4,200 |
| Servier Pharmaceuticals LLC | 5 | $2,835 |
| Daiichi Sankyo Inc. | 1 | $1,665 |
| AbbVie | 1 | $1,575 |
| Bristol Myers Squibb | 1 | $299 |
| Incyte Corporation | 1 | $30 |
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
$25,096 in reported general payments places this provider in the 70th percentile of 77 hematology providers in Massachusetts.
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.
Other hematology in Boston
- Edward BenzBoston$747K
- David KuterBoston$543K
- Jacalyn RosenblattBoston$455K
- Lynn BryBoston$286K
- John SloanBoston$257K
- Andrew EvensBoston$217K
- Omar NadeemBoston$191K
- Nathan ConnellBoston$145K
- Jean ConnorsBoston$144K
- Heather BenjaminBoston$106K
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.