Physician profile
John D Klemperer
NPI 1457337172
$103,665.15
in general payments reported to CMS, 2019-2025
8 companies · $11K in 2025
The $11K reported for 2025 was more than what 90% of Thoracic Surgery (Cardiothoracic Vascular Surgery) providers received nationally (typical 2025 total: $796).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $2,174 · 2020: $7,343 · 2021: $42K · 2022: $18K · 2023: $13K · 2024: $10K · 2025: $11K.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Consulting Fee: $25K · Education: $4,000 · Food and Beverage: $2,477 · Travel and Lodging: $2,295.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Consulting Fee | $24,787.50 |
| Education | $4,000.00 |
| Food and Beverage | $2,476.81 |
| Travel and Lodging | $2,294.95 |
Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.
Who reported paying
General payments only, as reported to CMS. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Atricure, INC. | $78,308.32 | 2019-2025 | Epi-Sense Guided Coagulation System With Visitrax, Epi-Sense Guided Coagulation System With Visitrax |
| Intuitive Surgical, INC. | $21,358.00 | 2019-2024 | Da Vinci Surgical System |
| Edwards Lifesciences Corporation | $1,712.50 | 2019-2025 | Mitris Resilia Mitral Valve, Konect Resilia |
| Astrazeneca Pharmaceuticals Lp | $1,445.67 | 2025 | Imfinzi |
| Abiomed | $489.03 | 2019-2025 | Impella |
| Medtronic, INC. | $141.88 | 2021 | |
| Bolton Medical INC | $110.40 | 2025 | Thoraflex Hybrid |
| Livanova USA, INC. | $99.35 | 2019 |
Drugs and devices associated with these payments
CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw John Klemperer listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.