Physician profile
Zachary William Abraham Klaassen
NPI 1891082772
$763,400.91
in general payments reported to CMS, 2019-2025
40 companies · $291K in 2025
The $291K reported for 2025 was more than what 99% of Surgery providers received nationally (typical 2025 total: $281).
Payments by year
General and research payments by program year, as reported to CMS.
General payments by year: 2019: $1,562 · 2020: $1,839 · 2021: $3,446 · 2022: $39K · 2023: $168K · 2024: $259K · 2025: $291K.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program: $434K · Consulting Fee: $190K · Travel and Lodging: $53K · Honoraria: $23K · Food and Beverage: $17K.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Compensation For Services Other Than Consulting, Including Serving As Faculty Or As A Speaker At A Venue Other Than A Continuing Education Program | $434,208.25 |
| Consulting Fee | $190,199.53 |
| Travel and Lodging | $53,073.03 |
| Honoraria | $22,800.00 |
| Food and Beverage | $16,888.01 |
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. Research payments are listed separately below. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Teleflex LLC | $274,680.05 | 2023-2025 | Barrigel, Urolift |
| Bayer Healthcare Pharmaceuticals INC. | $223,153.02 | 2019-2025 | |
| Progenics Pharmaceuticals, INC. | $108,308.35 | 2022-2025 | Pylarify |
| Palette Life Sciences, INC. | $83,167.08 | 2020-2023 | |
| Urogen Pharma, INC. | $29,953.60 | 2021-2025 | Jelmyto |
| Astellas Pharma US INC | $7,125.65 | 2021-2024 | Xtandi |
| Astellas Pharma Global Development | $6,337.50 | 2020-2025 | Xtandi |
| Pfizer INC. | $5,659.28 | 2021-2025 | |
| Novartis Pharmaceuticals Corporation | $5,126.96 | 2019-2025 | |
| Janssen Biotech, INC. | $4,410.37 | 2019-2025 | Rybrevant, Carvykti, Erleada |
| Blue Earth Diagnostics | $3,398.21 | 2021-2025 | Posluma |
| Telix Pharmaceuticals | $2,948.85 | 2024-2025 | Illuccix |
| Janssen Global Services, LLC | $2,740.00 | 2022-2024 | |
| Coloplast Corp | $1,939.35 | 2019-2025 | Isiris Astent Removal Device, Titan |
| Cook Medical LLC | $771.97 | 2019-2023 | Resonance |
Show all 40 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Axonics, INC. | $560.82 | 2023-2024 | Axonics, Bulkamid |
| Boston Scientific Corporation | $553.70 | 2019-2024 | Solyx Sis System |
| Angiodynamics, INC. | $336.15 | 2024-2025 | Nanoknife |
| Neotract INC. | $267.60 | 2019-2020 | |
| Procept Biorobotics Corporation | $228.98 | 2024 | Aquabeam System |
| Merck Sharp & Dohme LLC | $228.97 | 2021-2025 | Keytruda, Lynparza, Welireg |
| Galvanize Therapeutics, INC | $201.93 | 2025 | Aliya System |
| Ferring Pharmaceuticals INC. | $166.62 | 2024-2025 | Adstiladrin |
| Bayer Healthcare LLC | $149.78 | 2025 | |
| Janssen Scientific Affairs, LLC | $146.47 | 2019-2025 | Erleada |
| Laborie Medical Technologies Corp. | $133.09 | 2025 | |
| Aroa Biosurgery Incorporated | $118.55 | 2023 | |
| Biotissue Holdings INC. | $118.20 | 2024 | |
| Medtronic, INC. | $104.83 | 2024 | Interstim |
| Myovant Sciences INC. | $93.85 | 2022 | |
| Ambu INC. | $49.80 | 2022-2024 | |
| Richard Wolf Medical Instruments Corp. | $44.52 | 2019 | |
| Baxter Healthcare | $39.53 | 2019-2021 | |
| Innovation Technologies INC | $36.32 | 2024 | Irrisept |
| Becton, Dickinson and Company | $30.72 | 2023 | Bard Urinary Drainage Bag |
| Dornier Medtech America, INC | $19.53 | 2020 | |
| Covidien Lp | $17.59 | 2019 | |
| Olympus America INC. | $15.46 | 2019 | |
| Astrazeneca Pharmaceuticals Lp | $13.84 | 2021 | |
| Travere Therapeutics, INC. | $3.82 | 2021 |
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.
Research and ownership
$16,540.00 in research payments reported 2019-2025. Research payments are often institution-directed and tied to clinical trials: they are reported under a clinician's name but frequently go to a hospital or research organization, and usually reflect participation in medical research.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Zachary Klaassen 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.