MATTHEW G MEI
Allopathic & Osteopathic Physicians|Internal Medicine|Hematology DUARTE, CA NPI 1104069269
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine|Hematology CA Janssen Scientific Affairs, LLC All categories
General Payments — all program years on this page
$40,862.02
- Category: General Payments
- Program years: PY2018–2024
- Record count: 52
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $297.22 across 7 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 |
|---|---|---|
| Consulting Fee | $150.00 | 1 |
| Food and Beverage | $147.22 | 6 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Janssen Scientific Affairs, LLC | $150.00 | 1 |
| Celgene Corporation | $50.16 | 2 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $32.98 | 1 |
| GENZYME CORPORATION | $27.15 | 1 |
| Alexion Pharmaceuticals, Inc. | $22.67 | 1 |
| Helsinn Therapeutics (U.S.), Inc. | $14.26 | 1 |
By program year
Records — PY2024 (7)
| Record ID | Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Source |
|---|---|---|---|---|---|---|---|
| 1078844713 | Janssen Scientific Affairs, LLC | $150.00 | 09/05/2024 | Consulting Fee | Undisputed | 01/23/2026 | View at CMS |
| 1087156104 | Novartis Pharmaceuticals Corporation | $32.98 | 12/09/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1094020658 | Alexion Pharmaceuticals, Inc. | $22.67 | 04/17/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1101153999 | Celgene Corporation | $29.88 | 01/22/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1101154027 | Celgene Corporation | $20.28 | 11/15/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1134568115 | Helsinn Therapeutics (U.S.), Inc. | $14.26 | 01/24/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1139820003 | GENZYME CORPORATION | $27.15 | 04/03/2024 | 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.