Helene Emsellem, MD
Neurology · Potomac, MDNPI 1790720001
Payments from drug & device makers
Across 333 payments — averaging $2348.97 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Jazz Pharmaceuticals Inc.$221K
- Vanda Pharmaceuticals Inc.$190K
- Merck$168K
- Philips North America LLC$86K
- Takeda Pharmaceuticals U.S.A., Inc.$59K
- Harmony Biosciences LLC$47K
- plus $10K from 8 others
Across 101 payments — averaging $6817.84 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.
- Takeda Pharmaceuticals U.S.A., Inc.$589K
- Harmony Biosciences LLC$80K
- Jazz Pharmaceuticals Inc.$12K
- Imbrium Therapeutics L.p.$8K
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 |
|---|---|---|
| Jazz Pharmaceuticals Inc. | 182 | $221,209 |
| Vanda Pharmaceuticals Inc. | 30 | $189,536 |
| Merck | 18 | $168,274 |
| Philips North America LLC | 13 | $86,401 |
| Takeda Pharmaceuticals U.S.A., Inc. | 54 | $59,205 |
| Harmony Biosciences LLC | 16 | $47,212 |
| Imbrium Therapeutics L.p. | 2 | $5,375 |
| Vertex | 7 | $4,100 |
| Avadel CNS Pharmaceuticals, LLC | 3 | $346 |
| Inspire Medical Systems, Inc. | 3 | $235 |
| Axsome Therapeutics, Inc. | 1 | $120 |
| Avadel Specialty Pharmaceuticals, LLC | 1 | $112 |
| Idorsia Pharmaceuticals US Inc | 1 | $58 |
| Resmed Corp | 2 | $26 |
How this compares
$782,208 in reported general payments places this provider in the 95th percentile of 442 neurology 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.
Other neurology in Potomac
- Jose MasdeuBethesda$5.8M
- Ellen MowryBaltimore$5.7M
- Daniel BeckerLutherville$4.2M
- Michael PolydefkisBaltimore$4.1M
- Pavel KleinBethesda$3.2M
- Jeffrey RothsteinBaltimore$3M
- Pavan BhargavaBaltimore$2.8M
- Thomas CrawfordBaltimore$2.4M
- Nicholas MaragakisBaltimore$2.2M
- Shiv SaidhaBaltimore$2.1M
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.