Mahmut Celiker
Pediatric Hematology-Oncology · Stony Brook, NYNPI 1396782678
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 35 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 14 manufacturers reported payments, led by Sanofi at 29.7% of the total.
Across 35 payments — averaging $31.30 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sanofi$325
- Novartis$159
- Pfizer$154
- Agios Pharmaceuticals, Inc.$125
- Takeda Pharmaceuticals U.S.A., Inc.$69
- Merck$59
- plus $205 from 8 others
Across 5 payments — averaging $75,492 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.
- Jazz Pharmaceuticals Inc.$377K
What the payments were for
- Food & beverage$1,096100%
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 |
|---|---|---|
| Sanofi | 8 | $325 |
| Novartis | 7 | $159 |
| Pfizer | 3 | $154 |
| Agios Pharmaceuticals, Inc. | 1 | $125 |
| Takeda Pharmaceuticals U.S.A., Inc. | 3 | $69 |
| Merck | 3 | $59 |
| Puma Biotechnology, Inc. | 2 | $37 |
| Johnson & Johnson | 2 | $35 |
| Tesaro, Inc. | 1 | $28 |
| E.r. Squibb & Sons, L.L.C. | 1 | $25 |
| AstraZeneca | 1 | $25 |
| Octapharma USA, Inc. | 1 | $20 |
| Tersera Therapeutics LLC | 1 | $19 |
| Sanofi-aventis U.S. LLC | 1 | $17 |
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
$1,096 in reported general payments places this provider in the 55th percentile of 196 pediatric hematology-oncology providers in New York.
See all pediatric hematology-oncology providers in New York →
Other pediatric hematology-oncology in Stony Brook
- Laura HoganStony Brook$3K
- Mitchell CairoHawthorne$1.1M
- Sujit ShethNew York$359K
- Jaap Jan BoelensNew York$303K
- Mary SugrueGarden City$253K
- James BusselNew York$204K
- Saara KavianyNew York$144K
- Gary BrittenhamNew York$137K
- Jennifer DavilaBronx$126K
- Beverly SchaeferBuffalo$120K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.