Marc Ernstoff
Medical Oncology · Frederick, MDNPI 1275549073
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $13,547 of the $14,472 with a category attached, or 93.6%. 3 manufacturers reported payments, led by E.r. Squibb & Sons, L.L.C. at 49.8% of the total.
Across 14 payments — averaging $1033.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$7K
- Alkermes, Inc.$7K
- Clinigen, Inc.$290
Across 107 payments — averaging $9023.65 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.
- Alkermes, Inc.$948K
- E.r. Squibb & Sons, L.L.C.$17K
- Merck$615
What the payments were for
- Consulting fees$13,54794%
- Travel & lodging$3122%
- Food & beverage$6134%
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 |
|---|---|---|
| E.r. Squibb & Sons, L.L.C. | 9 | $7,207 |
| Alkermes, Inc. | 3 | $6,975 |
| Clinigen, Inc. | 2 | $290 |
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.
- Proleukin$290
How this compares
$14,472 in reported general payments places this provider in the 65th percentile of 180 medical oncology providers in Maryland.
Other medical oncology in Frederick
- Mario EisenbergerBaltimore$2.9M
- Adrian SenderowiczBethesda$1.6M
- Mohit NarangOwing Mills$1.3M
- David SidranskyBaltimore$520K
- Carole MillerBaltimore$331K
- Mark LevisBaltimore$323K
- Tanguy Lim-SeiwertBaltimore$301K
- Shruti ChaturvediBaltimore$265K
- Sandy KotiahBaltimore$247K
- Bruce SmithBaltimore$235K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.