MARK A MANDELBAUM
Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology KANSAS CITY, MO NPI 1629033428
Browse related groups: Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology MO Alexion Pharmaceuticals, Inc. All categories
General Payments — all program years on this page
$26,465.33
- Category: General Payments
- Program years: PY2018–2024
- Record count: 248
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $1,545.92 across 49 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 | $1,345.92 | 47 |
| Education | $200.00 | 2 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $409.88 | 7 |
| Biogen, Inc. | $275.56 | 10 |
| ARGENX US, INC. | $182.54 | 4 |
| TG THERAPEUTICS, INC. | $180.27 | 4 |
| Lundbeck LLC | $124.86 | 6 |
| Celgene Corporation | $86.64 | 5 |
| ABBVIE INC. | $86.17 | 5 |
| UCB, Inc. | $76.94 | 2 |
| ACADIA Pharmaceuticals Inc | $37.91 | 2 |
| PFIZER INC. | $26.04 | 1 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $23.48 | 1 |
| Aucta Pharmaceuticals, Inc. | $19.89 | 1 |
| Acerta Pharma LLC | $15.74 | 1 |
By program year
Records — PY2024 (49)
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.