Sandrine Niyongere, MD
Hematology & Oncology · Baltimore, MDNPI 1386908119
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $725 of the $863 with a category attached, or 84.0%. 9 manufacturers reported payments, led by Amgen at 46.7% of the total. Reporting peaked in 2019 at $480 and has fallen 61.2% since, to $186 in 2025. That places this record below the midpoint for hematology & oncology clinicians in MD, where the typical reported total is $2,111.
Across 16 payments — averaging $53.92 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$403
- Sanofi$120
- Jazz Pharmaceuticals Inc.$118
- Pfizer$82
- AstraZeneca$52
- Merck$32
- plus $56 from 3 others
Across 21 payments — averaging $8759.47 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.
- Gilead$93K
- Servier Bioinnovation$81K
- Bristol Myers Squibb$10K
What the payments were for
- Food & beverage$72584%
- Education$13816%
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 |
|---|---|---|
| Amgen | 4 | $403 |
| Sanofi | 2 | $120 |
| Jazz Pharmaceuticals Inc. | 1 | $118 |
| Pfizer | 3 | $82 |
| AstraZeneca | 2 | $52 |
| Merck | 1 | $32 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $23 |
| Caris MPI, Inc. | 1 | $20 |
| Servier Pharmaceuticals LLC | 1 | $13 |
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
$863 in reported general payments places this provider in the 35th percentile of 242 hematology & oncology providers in Maryland.
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 |
|---|---|---|
| SprycelDasatinib | 17 | $288,126 |
| JakafiRuxolitinib Phosphate | 13 | $198,013 |
| TibsovoIvosidenib | 11 | $181,094 |
| Imatinib Mesylate | 46 | $180,384 |
| VenclextaVenetoclax | 13 | $119,758 |
| DopteletAvatrombopag Maleate | 11 | $56,607 |
| EliquisApixaban | 25 | $15,849 |
| Hydroxyurea | 43 | $1,799 |
| Levofloxacin | 11 | $741 |
| Acyclovir | 45 | $558 |
| Ondansetron Hcl | 25 | $482 |
| Prochlorperazine Maleate | 11 | $304 |
| Allopurinol | 26 | $198 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 16 | $127 |
| Tramadol Hcl | 13 | $93 |
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 |
|---|---|---|
| Servier Pharmaceuticals LLCTibsovo | $13 | $181,09411 claims |
| PfizerEliquis | $82 | $15,84925 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 35th percentile of 242 hematology & oncology providers in Maryland.
Other hematology & oncology in Baltimore
- Ani BalmanoukianBaltimore$842K
- Benjamin LevyBaltimore$578K
- Patrick FordeBaltimore$269K
- Noah HahnBaltimore$133K
- Huzefa BahrainBaltimore$102K
- Tania JainBaltimore$95K
- Josephine FelicianoBaltimore$72K
- Abhijeet KumarBaltimore$66K
- Michael AuerbachBaltimore$64K
- Suman RaoBaltimore$54K
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.