Katarzyna Slys
Physician Assistant · Naperville, ILNPI 1336757459
Payments from drug & device makers
Across 205 payments — averaging $20.36 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Otsuka America Pharmaceutical, Inc.$600
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$463
- Takeda Pharmaceuticals U.S.A., Inc.$398
- Corium, LLC$314
- Ironshore Pharmaceuticals Inc.$312
- Tris Pharma Inc$265
- plus $2K from 23 others
What the payments were for
- Food & beverage$4,154100%
- Education$190%
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 |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | 33 | $600 |
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 14 | $463 |
| Takeda Pharmaceuticals U.S.A., Inc. | 22 | $398 |
| Corium, LLC | 20 | $314 |
| Ironshore Pharmaceuticals Inc. | 13 | $312 |
| Tris Pharma Inc | 13 | $265 |
| Supernus Pharmaceuticals, Inc. | 16 | $264 |
| AbbVie | 10 | $210 |
| Axsome Therapeutics, Inc. | 5 | $180 |
| Johnson & Johnson | 7 | $142 |
| Teva Pharmaceuticals USA, Inc. | 7 | $140 |
| Neos Therapeutics, LP | 7 | $116 |
| Alkermes, Inc. | 5 | $107 |
| Lundbeck LLC | 5 | $98 |
| Collegium Pharmaceutical, Inc. | 4 | $86 |
| Jazz Pharmaceuticals Inc. | 4 | $67 |
| Almatica Pharma LLC | 3 | $61 |
| Sunovion Pharmaceuticals Inc. | 3 | $51 |
| E.r. Squibb & Sons, L.L.C. | 2 | $51 |
| Adlon Therapeutics L.p. | 3 | $46 |
| Sage Therapeutics, LLC | 1 | $30 |
| Noven Therapeutics, LLC | 1 | $25 |
| Luye Pharma (USA) Ltd. | 1 | $23 |
| Indivior Inc. | 1 | $22 |
| Biogen | 1 | $22 |
| Neurocrine Biosciences, Inc. | 1 | $21 |
| Idorsia Pharmaceuticals US Inc | 1 | $20 |
| Neuronetics, Inc. | 1 | $19 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 1 | $19 |
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
$4,173 in reported general payments places this provider in the 90th percentile of 3,912 physician assistant providers in Illinois.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Quetiapine Fumarate ErQuetiapine Fumarate | 11 | $2,032 |
| Desvenlafaxine Succinate ErDesvenlafaxine Succinate | 35 | $2,025 |
| Clozapine | 11 | $826 |
| Quetiapine Fumarate | 51 | $802 |
| Ziprasidone Hcl | 18 | $756 |
| Divalproex Sodium ErDivalproex Sodium | 22 | $672 |
| Gabapentin | 27 | $521 |
| Sertraline Hcl | 53 | $323 |
| Venlafaxine Hcl ErVenlafaxine Hcl | 37 | $275 |
| Trazodone Hcl | 32 | $258 |
| Lamotrigine | 14 | $250 |
| Bupropion XlBupropion Hcl | 19 | $195 |
| Amitriptyline Hcl | 15 | $192 |
| Buspirone Hcl | 37 | $178 |
| Divalproex Sodium | 13 | $139 |
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 |
|---|---|---|
| Almatica Pharma LLCSertraline Hcl | $61 | $32353 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 90th percentile of 3,912 physician assistant providers in Illinois.
Other physician assistant in Naperville
- Kevin SerranoNaperville$15K
- Andrew MastroChicago$419K
- Christopher AricoSkokie$407K
- Karlijn BurridgeWestmont$144K
- Ian MackeySkokie$135K
- Stephanie TraceyItasca$122K
- Olabimpe PhilipsAddison$103K
- Renata BlockChicago$103K
- Margaret RomanoChicago$82K
- Christina StarksChicago$77K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.