John Mascarenhas, MD
Hematology & Oncology · New York, NYNPI 1376719104
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $346,728 of the $456,440 with a category attached, or 76.0%. 27 manufacturers reported payments, led by Incyte Corporation at 24.9% of the total. Reporting peaked in 2024 at $148,567 and has fallen 56.1% since, to $65,194 in 2025. Among hematology & oncology clinicians in NY with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 306 payments — averaging $1491.64 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Incyte Corporation$114K
- Bristol Myers Squibb$52K
- GSK$43K
- CTI Biopharma Corp.$40K
- Sobi, Inc$37K
- AbbVie$31K
- plus $139K from 21 others
Across 831 payments — averaging $13,650 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.
- Novartis$6.4M
- Incyte Corporation$2.8M
- Bristol Myers Squibb$507K
- Merck$367K
- Genentech, Inc.$288K
- Geron Corporation$273K
- plus $710K from 11 others
What the payments were for
- Consulting fees$346,72876%
- Speaking & faculty fees$75,92017%
- Travel & lodging$26,8836%
- Food & beverage$6,8762%
- Education$330%
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 |
|---|---|---|
| Incyte Corporation | 92 | $113,825 |
| Bristol Myers Squibb | 38 | $52,165 |
| GSK | 27 | $42,947 |
| CTI Biopharma Corp. | 18 | $40,397 |
| Sobi, Inc | 13 | $37,498 |
| AbbVie | 25 | $30,881 |
| Sumitomo Pharma America, Inc. | 7 | $23,441 |
| E.r. Squibb & Sons, L.L.C. | 9 | $22,040 |
| Karyopharm Therapeutics Inc. | 12 | $19,984 |
| Pharmaessentia USA Corporation | 8 | $19,372 |
| Novartis | 20 | $10,512 |
| Ipsen Biopharmaceuticals, Inc | 4 | $9,135 |
| Geron Corporation | 8 | $8,386 |
| Blueprint Medicines Corporation | 7 | $7,965 |
| Swedish Orphan Biovitrum AB | 1 | $5,550 |
| Genentech, Inc. | 2 | $4,620 |
| Sanofi US Services Inc. | 1 | $2,580 |
| Merck | 2 | $1,923 |
| Jubilant Therapeutics Inc | 1 | $1,500 |
| Genmab U.S., Inc. | 1 | $785 |
| Stemline Therapeutics Inc. | 2 | $310 |
| Daiichi Sankyo Inc. | 2 | $261 |
| Morphosys, US Inc. | 2 | $158 |
| Gilead | 1 | $125 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $31 |
| Syndax Pharmaceuticals, Inc. | 1 | $30 |
| Sanofi-aventis U.S. LLC | 1 | $21 |
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
$456,440 in reported general payments places this provider in the 95th percentile of 967 hematology & oncology providers in New York.
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 |
|---|---|---|
| JakafiRuxolitinib Phosphate | 78 | $1,355,284 |
| VonjoPacritinib Citrate | 25 | $594,068 |
| XareltoRivaroxaban | 22 | $18,678 |
| Posaconazole | 30 | $18,428 |
| Acyclovir | 46 | $672 |
| Hydroxyurea | 30 | $494 |
| Allopurinol | 55 | $468 |
| Levofloxacin | 27 | $367 |
| Ondansetron OdtOndansetron | 12 | $142 |
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 |
|---|---|---|
| Incyte CorporationJakafi | $113,825 | $1,355,28478 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 95th percentile of 967 hematology & oncology providers in New York.
Other hematology & oncology in New York
- Michael SchusterNew York$1.6M
- Charles SawyersNew York$1.6M
- Manuel Hidalgo-MedinaNew York$1.4M
- Ross LevineNew York$968K
- Joshua SabariNew York$761K
- Gail RobozNew York$738K
- Jeffrey LaurenceNew York$640K
- John AllanNew York$580K
- Ilan ShapiraNew York$475K
- Ajai ChariNew York$456K
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.