Covered recipient · General Payments record
BYUNG CHAN THOMAS AHN
Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology
General Payments · PY2018–2024
$3,342.07
- Reported across 185 records
- CMS publication 2026-01-23
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How these totals are calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
PY2024 · sorted by reported total
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $1,357.41 | 78 |
By paying entity
PY2024 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| UCB, Inc. | $333.01 | 23 |
| Celgene Corporation | $278.46 | 17 |
| ABBVIE INC. | $169.40 | 10 |
| Neurocrine BioSciences, Inc. | $91.13 | 3 |
| Biogen, Inc. | $90.49 | 5 |
| PFIZER INC. | $68.89 | 4 |
| Amgen Inc. | $67.54 | 3 |
| Lundbeck LLC | $43.07 | 2 |
| Teva Pharmaceuticals USA, Inc. | $40.40 | 2 |
| CATALYST PHARMACEUTICALS, INC. | $31.56 | 2 |
| SK Life Science, Inc. | $27.88 | 1 |
| Otsuka America Pharmaceutical, Inc. | $23.35 | 1 |
| ANI Pharmaceuticals, Inc. | $21.29 | 1 |
| Neurelis, Inc. | $20.36 | 1 |
| Amneal Pharmaceuticals LLC | $18.57 | 1 |
| LivaNova USA, Inc. | $16.44 | 1 |
| Sumitomo Pharma America, Inc. | $15.57 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2024 (78)
Sorted by paying entity, then date · as published by CMS
Source & provenance
- Dataset
- CMS Open Payments — General Payments
- Publisher of source data
- Centers for Medicare & Medicaid Services
- CMS publication date
- 2026-01-23
- Program years on this page
- 2018, 2019, 2021, 2022, 2023, 2024
- Generated from
- OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
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