STEVE I CHAN
Allopathic & Osteopathic Physicians|Internal Medicine DIAMOND BAR, CA NPI 1790750743
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine CA Amgen Inc. All categories
General Payments — all program years on this page
$643.01
- Category: General Payments
- Program years: PY2018–2024
- Record count: 15
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $371.00 across 6 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is 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
Latest program year (PY2024) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $371.00 | 6 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Amgen Inc. | $350.64 | 5 |
| Esperion Therapeutics, Inc. | $20.36 | 1 |
By program year
Records — PY2024 (6)
| Record ID | Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Source |
|---|---|---|---|---|---|---|---|
| 1115490444 | Amgen Inc. | $26.33 | 03/06/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1115490451 | Amgen Inc. | $27.48 | 10/04/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1115490459 | Amgen Inc. | $21.83 | 12/05/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1115490467 | Amgen Inc. | $125.00 | 01/25/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1115490472 | Amgen Inc. | $150.00 | 06/27/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1129430600 | Esperion Therapeutics, Inc. | $20.36 | 10/08/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- Generated from: OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
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Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.