Dan Zandberg, MD
Hematology & Oncology · Baltimore, MDNPI 1912184763
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $16,845 of the $23,014 with a category attached, or 73.2%. Merck accounts for 75.0% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2023 at $11,097 and has fallen 98.7% since, to $145 in 2025.
Across 28 payments — averaging $821.91 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$17K
- GSK$4K
- Coherus Oncology, Inc.$1K
- Blueprint Medicines Corporation$866
- AstraZeneca$99
- Seagen Inc.$48
Across 400 payments — averaging $24,635 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.
- Merck$7.8M
- GSK$479K
- AstraZeneca$436K
- E.r. Squibb & Sons, L.L.C.$418K
- Macrogenics, Inc.$157K
- AVEO Pharmaceuticals, Inc.$151K
- plus $431K from 12 others
What the payments were for
- Consulting fees$16,84573%
- Speaking & faculty fees$2,0669%
- Travel & lodging$3,33314%
- Food & beverage$7703%
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 | 22 | $17,255 |
| GSK | 1 | $3,500 |
| Coherus Oncology, Inc. | 2 | $1,246 |
| Blueprint Medicines Corporation | 1 | $866 |
| AstraZeneca | 1 | $99 |
| Seagen Inc. | 1 | $48 |
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.
- KEYTRUDA$3,228
How this compares
$23,014 in reported general payments places this provider in the 80th 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 |
|---|---|---|
| LenvimaLenvatinib Mesylate | 26 | $632,725 |
| Prochlorperazine Maleate | 43 | $1,417 |
| Ondansetron Hcl | 33 | $563 |
| Oxycodone Hcl | 14 | $540 |
| Ondansetron OdtOndansetron | 14 | $304 |
| Levothyroxine Sodium | 30 | $229 |
| Gabapentin | 17 | $131 |
Paid to pharmacies, not to this prescriber.
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.