James Mason, MD
Hematology & Oncology · la Jolla, CANPI 1497717730
Payments from drug & device makers
Across 211 payments — averaging $660.62 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Helsinn Healthcare SA$55K
- Genentech, Inc.$24K
- Incyte Corporation$22K
- Celularity Inc.$18K
- Otsuka Pharmaceutical Co., Ltd.$14K
- F. Hoffmann-la Roche AG$2K
- plus $4K from 33 others
Across 2 payments — averaging $420.36 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$841
What the payments were for
- Consulting fees$5259%
- Speaking & faculty fees$1,58127%
- Food & beverage$3,63561%
- Education$2094%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Helsinn Healthcare SA | 10 | $54,962 |
| Genentech, Inc. | 6 | $24,444 |
| Incyte Corporation | 39 | $22,344 |
| Celularity Inc. | 1 | $18,250 |
| Otsuka Pharmaceutical Co., Ltd. | 7 | $13,541 |
| F. Hoffmann-la Roche AG | 2 | $1,581 |
| AbbVie | 24 | $526 |
| Beigene, Ltd. | 1 | $525 |
| Novartis | 15 | $460 |
| Astellas Pharma US Inc | 15 | $400 |
| E.r. Squibb & Sons, L.L.C. | 6 | $307 |
| Merck | 16 | $277 |
| AstraZeneca(2 entities) | 8 | $226 |
| Gilead(2 entities) | 10 | $214 |
| Takeda Pharmaceuticals U.S.A., Inc. | 4 | $179 |
| Tempus AI, Inc | 2 | $176 |
| Pharmacyclics LLC, An Abbvie Company | 4 | $173 |
| Pfizer | 6 | $120 |
| Genentech USA, Inc. | 5 | $78 |
| Amgen | 4 | $76 |
| Springworks Therapeutics, Inc. | 2 | $57 |
| Verastem, Inc. | 2 | $50 |
| Boehringer Ingelheim | 2 | $42 |
| Seagen Inc. | 3 | $35 |
| Fennec Pharmaceuticals, Inc. | 2 | $35 |
| Agios Pharmaceuticals, Inc. | 2 | $35 |
| Pharmaessentia USA Corporation | 1 | $34 |
| Johnson & Johnson | 1 | $32 |
| Sanofi | 1 | $29 |
| Macrogenics, Inc. | 1 | $25 |
| Array Biopharma Inc | 1 | $23 |
| Daiichi Sankyo Inc. | 1 | $20 |
| Bristol Myers Squibb | 1 | $20 |
| Stemline Therapeutics Inc. | 1 | $20 |
| Foundation Medicine, Inc. | 1 | $18 |
| Tesaro, Inc. | 1 | $16 |
| Spectrum Pharmaceuticals Inc. | 1 | $15 |
| Dova Pharmaceuticals | 1 | $15 |
| Epizyme, Inc. | 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
$139,391 in reported general payments places this provider in the 75th percentile of 1,363 hematology & oncology providers in California.
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 | 50 | $591,873 |
| Lenalidomide | 26 | $460,336 |
| PromactaEltrombopag Olamine | 15 | $419,302 |
| RezurockBelumosudil Mesylate | 18 | $323,384 |
| VonjoPacritinib Citrate | 12 | $292,875 |
| RevlimidLenalidomide | 16 | $289,224 |
| CalquenceAcalabrutinib Maleate | 18 | $269,767 |
| JakafiRuxolitinib Phosphate | 11 | $145,122 |
| EliquisApixaban | 25 | $17,313 |
| Entecavir | 13 | $9,229 |
| Cyclosporine ModifiedCyclosporine, Modified | 20 | $3,962 |
| Acyclovir | 107 | $2,806 |
| Fluconazole | 18 | $1,519 |
| Ursodiol | 16 | $1,141 |
| Imatinib Mesylate | 17 | $1,114 |
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 |
|---|---|---|
| Pharmacyclics LLC, An Abbvie CompanyImbruvica | $173 | $591,87350 claims |
| NovartisPromacta | $460 | $419,30215 claims |
| Bristol Myers SquibbRevlimid | $20 | $289,22416 claims |
| AstraZenecaCalquence | $226 | $269,76718 claims |
| Incyte CorporationJakafi | $22,344 | $145,12211 claims |
| PfizerEliquis | $120 | $17,31325 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 75th percentile of 1,363 hematology & oncology providers in California.
Other hematology & oncology in la Jolla
- Dimitrios Tzachanisla Jolla$4M
- Alain AlgaziSan Francisco$119.2M
- David BerzLos Angeles$43.3M
- Jonathan GoldmanSanta Monica$35.7M
- Omid HamidSanta Monica$23.7M
- Nicholas McAndrewLos Angeles$22.9M
- Aditya BardiaSanta Monica$22.1M
- Joseph TuscanoSacramento$20.4M
- Zev WainbergSanta Monica$19.3M
- Caitlin CostelloSan Diego$16.9M
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.