Tim Greten
Hematology & Oncology · Bethesda, MDNPI 1518231000
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $9,257 of the $10,059 with a category attached, or 92.0%. Merck accounts for 72.1% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2023 at $7,360 and has fallen 97.7% since, to $168 in 2025.
Across 16 payments — averaging $628.66 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$7K
- Astrazeneca UK Limited$2K
- Astrazeneca AB$188
- Exelixis Inc.$168
- AstraZeneca$135
- Genentech USA, Inc.$111
Across 12 payments — averaging $352,526 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.
- AstraZeneca$2.6M
- Merck$960K
- Astrazeneca UK Limited$319K
- Novartis$312K
- E.r. Squibb & Sons, L.L.C.$76K
What the payments were for
- Travel & lodging$9,25792%
- Food & beverage$8028%
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 |
|---|---|---|
| Merck | 6 | $7,249 |
| Astrazeneca UK Limited | 5 | $2,208 |
| Astrazeneca AB | 2 | $188 |
| Exelixis Inc. | 1 | $168 |
| AstraZeneca | 1 | $135 |
| Genentech USA, Inc. | 1 | $111 |
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
$10,059 in reported general payments places this provider in the 70th percentile of 242 hematology & oncology providers in Maryland.
Other hematology & oncology in Bethesda
- Ralph BocciaBethesda$3.1M
- Sandra SwainBethesda$1M
- Chitra RajagopalBethesda$89K
- Susan LeitmanBethesda$44K
- Giuseppe GiacconeBethesda$32K
- Phillip ScheinbergBethesda$27K
- Steven PavleticBethesda$13K
- Kashif AliSilver Spring$987K
- Ani BalmanoukianBaltimore$842K
- Benjamin LevyBaltimore$578K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.