Defencath
Payments companies reported to CMS as associated with Defencath. "Associated with" is CMS's wording: it links a payment to a product without saying the money was spent on it.
By year
Payments reported as associated with Defencath, per program year, as reported to CMS.
Who makes it
Specialties most often involved
Where the associated payments went, by the receiving clinician's specialty.
Clinicians most associated with Defencath
These are the largest totals companies reported as associated with Defencath. They are typically speaking or consulting arrangements, which companies must report by law; appearing here is not evidence of anything improper.
| Clinician | Location | Specialty | Associated payments (2023-2025) |
|---|---|---|---|
| Michael Kraus | Indianapolis, IN | Nephrology (Internal Medicine) | $88,796.92 |
| Alan Dunton | Staten Island, NY | Internal Medicine | $78,697.03 |
| David Shulkin | Morristown, NJ | Internal Medicine | $60,000.00 |
| Janet Connor | Glenside, PA | $39,000.00 | |
| Anil Agarwal | Columbus, OH | Nephrology (Internal Medicine) | $38,657.65 |
| Troy Plumb | Omaha, NE | Nephrology (Internal Medicine) | $15,562.97 |
| Geoffrey Walker | Irving, TX | Nephrology (Internal Medicine) | $15,562.05 |
| Usama Hussein | Virginia Beach, VA | Nephrology (Internal Medicine) | $13,746.74 |
| Gopa Green | Santa Rosa, CA | $13,348.01 | |
| Lisa Koester Wiedemann | Saint Louis, MO | Adult Health (Nurse Practitioner) | $8,539.88 |
Prescribed Defencath?
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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.