Shan Chen, MD
Neurology · New Brunswick, NJNPI 1184940017
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $9,735 of the $13,513 with a category attached, or 72.0%. Argenx US, Inc. accounts for 69.9% of it on its own, with 10 other manufacturers making up the rest. 2025 is the largest year on record at $10,148, more than ten times the $264 reported in 2019.
Across 43 payments — averaging $314.26 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Argenx US, Inc.$9K
- CSL Behring$2K
- AstraZeneca$758
- AbbVie$254
- UCB, Inc.$136
- Grifols USA, LLC$124
- plus $312 from 5 others
Across 31 payments — averaging $5657.78 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.
- Argenx US, Inc.$138K
- Janssen Research & Development, LLC$18K
- Amylyx Pharmaceuticals, Inc.$16K
- Vertex$3K
What the payments were for
- Consulting fees$9,73572%
- Travel & lodging$1,29310%
- Food & beverage$2,47418%
- Education$110%
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 |
|---|---|---|
| Argenx US, Inc. | 18 | $9,444 |
| CSL Behring | 6 | $2,485 |
| AstraZeneca(2 entities) | 8 | $758 |
| AbbVie(2 entities) | 3 | $254 |
| UCB, Inc. | 1 | $136 |
| Grifols USA, LLC | 1 | $124 |
| Alnylam Pharmaceuticals Inc. | 2 | $111 |
| Novartis | 1 | $96 |
| Acadia Pharmaceuticals Inc | 1 | $50 |
| Akcea Therapeutics, Inc. | 1 | $30 |
| Medtronic | 1 | $26 |
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
$13,513 in reported general payments places this provider in the 75th percentile of 521 neurology providers in New Jersey.
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 |
|---|---|---|
| Radicava OrsEdaravone | 67 | $952,830 |
| Gamunex-CImmune Globul G/Gly/Iga Avg 46 | 28 | $287,132 |
| GammakedImmune Globul G/Gly/Iga Avg 46 | 15 | $175,896 |
| BotoxOnabotulinumtoxina | 35 | $78,795 |
| Gabapentin | 22 | $213 |
| Tizanidine Hcl | 29 | $206 |
| Sodium Chloride0.9 % Sodium Chloride | 24 | $113 |
| Donepezil Hcl | 20 | $97 |
| Prednisone | 11 | $54 |
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 |
|---|---|---|
| Grifols USA, LLCGamunex-C | $124 | $287,13228 claims |
| AbbVieBotox | $254 | $78,79535 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 75th percentile of 521 neurology providers in New Jersey.
Other neurology in New Brunswick
- Daniel SchneiderNew Brunswick$137K
- Suhayl Dhib-JalbutNew Brunswick$64K
- Steven BromleyAudubon$1.5M
- Mary Ann PiconeTeaneck$1.5M
- Fiona GuptaOradell$1.1M
- Matthew DavisMiddletown$567K
- Amos KatzEatontown$558K
- Monte PellmarFreehold$429K
- Marcie RabinSummit$387K
- Ashish KapoorBayonne$329K
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.