Yun Sun, MD
Neurology · Wynnewood, PANPI 1659471217
Payments from drug & device makers
Across 34 payments — averaging $19.46 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sunovion Pharmaceuticals Inc.$151
- Eisai Inc.$77
- Lilly USA, LLC$63
- SK Life Science, Inc.$52
- AstraZeneca$51
- UCB, Inc.$50
- plus $218 from 8 others
What the payments were for
- Food & beverage$662100%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Sunovion Pharmaceuticals Inc. | 9 | $151 |
| Eisai Inc. | 3 | $77 |
| Lilly USA, LLC | 4 | $63 |
| SK Life Science, Inc. | 2 | $52 |
| AstraZeneca | 2 | $51 |
| UCB, Inc. | 2 | $50 |
| AbbVie | 3 | $50 |
| Argenx US, Inc. | 2 | $34 |
| Teva Pharmaceuticals USA, Inc. | 2 | $30 |
| TG Therapeutics, Inc. | 1 | $24 |
| Adamas Pharmaceuticals, Inc. | 1 | $23 |
| Acadia Pharmaceuticals Inc | 1 | $21 |
| Neurocrine Biosciences, Inc. | 1 | $21 |
| Promius Pharma LLC | 1 | $16 |
How this compares
$662 in reported general payments places this provider in the 40th percentile of 941 neurology providers in Pennsylvania.
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 Wynnewood
- David WeismanAbington$9.3M
- Amit Bar-OrPhiladelphia$7.7M
- Thomas LeistPhiladelphia$5.8M
- Jan DrappatzPittsburgh$4M
- Lauren ElmanPhiladelphia$3.3M
- David IrwinPhiladelphia$2.5M
- Paula ClemensPittsburgh$2.1M
- Anoopum GuptaPittsburgh$2M
- Daniel KremensPhiladelphia$1.9M
- Frances JensenPhiladelphia$1.8M
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.