DOUGLAS F MCMAHON
Allopathic & Osteopathic Physicians|Allergy & Immunology MAPLEWOOD, MN NPI 1356533293
Browse related groups: Allopathic & Osteopathic Physicians|Allergy & Immunology MN Pharming Healthcare, Inc. All categories
General Payments — all program years on this page
$15,698.48
- Category: General Payments
- Program years: PY2018–2024
- Record count: 38
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $88.01 across 5 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 | $88.01 | 5 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Pharming Healthcare, Inc. | $34.07 | 2 |
| Phadia US Inc. | $18.95 | 1 |
| Acerta Pharma LLC | $17.56 | 1 |
| Genentech USA, Inc. | $17.43 | 1 |
By program year
Records — PY2024 (5)
| Record ID | Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Source |
|---|---|---|---|---|---|---|---|
| 1067578144 | Phadia US Inc. | $18.95 | 02/16/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1110537701 | AstraZeneca Pharmaceuticals LP | $17.56 | 04/04/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1132156446 | Pharming Healthcare, Inc. | $19.22 | 01/05/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1132156449 | Pharming Healthcare, Inc. | $14.85 | 07/11/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1133003639 | Genentech USA, Inc. | $17.43 | 03/14/2024 | 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.