Kenji Oyasu, MD
Emergency Medicine · Waukegan, ILNPI 1487768552
Payments from drug & device makers
Across 76 payments — averaging $18.84 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Braeburn Inc.$407
- Galderma Laboratories, L.p.$355
- Johnson & Johnson$260
- Indivior Inc.$185
- AbbVie$69
- USWM, LLC$66
- plus $88 from 4 others
What the payments were for
- Speaking & faculty fees$15010%
- Food & beverage$1,28290%
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 |
|---|---|---|
| Braeburn Inc. | 36 | $407 |
| Galderma Laboratories, L.p. | 7 | $355 |
| Johnson & Johnson | 12 | $260 |
| Indivior Inc. | 10 | $185 |
| AbbVie | 3 | $69 |
| USWM, LLC | 3 | $66 |
| Revance Therapeutics, Inc. | 1 | $35 |
| Orexo US, Inc. | 2 | $28 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $14 |
| Janssen Scientific Affairs, LLC | 1 | $10 |
How this compares
$1,432 in reported general payments places this provider in the 95th percentile of 2,434 emergency medicine providers in Illinois.
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 |
|---|---|---|
| Buprenorphine Hcl | 28 | $1,240 |
| Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl | 11 | $935 |
| Ondansetron OdtOndansetron | 23 | $383 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 11 | $278 |
| Alprazolam | 14 | $187 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 28 | $126 |
| Methylprednisolone | 18 | $93 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 13 | $80 |
| Prednisone | 14 | $19 |
Paid to pharmacies, not to this prescriber.
Other emergency medicine in Waukegan
- Erika ClaytonBolingbrook$837K
- Kristen FergusonSpringfield$511K
- Lois ClarkeChicago$415K
- Michael GottliebChicago$364K
- Jonathan ClaudLisle$171K
- Christopher RossChicago$132K
- Jonathan HandlerNorthbrook$113K
- Erik KulstadChicago$109K
- Philip MitchellNormal$107K
- Adam GoodcoffChicago$98K
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.