Tiopronin
Payments companies reported to CMS as associated with Tiopronin. "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 Tiopronin, 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 Tiopronin
These are the largest totals companies reported as associated with Tiopronin. 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) |
|---|---|---|---|
| Steven Yablon | West Nyack, NY | Nephrology (Internal Medicine) | $77.69 |
| Ronald Rubenstein | Royal Oak, MI | Urology | $67.49 |
| Zalman Suldan | Teaneck, NJ | Nephrology (Internal Medicine) | $56.60 |
| Arthur Kozin | West Nyack, NY | Nephrology (Internal Medicine) | $49.21 |
| Kara Parker | Richmond, VA | Women'S Health (Nurse Practitioner) | $48.33 |
| Laura Liwen | Richmond, VA | Physician Assistant | $48.33 |
| Dharamdas Ramnani | Richmond, VA | Anatomic Pathology & Clinical Pathology | $37.42 |
| Andrew Tracey | Richmond, VA | Urology | $37.42 |
| Joseph Crivelli | Birmingham, AL | Urology | $36.50 |
| Andrew Colhoun | Richmond, VA | Urology | $33.20 |
Prescribed Tiopronin?
See what its makers reported for your doctor. Two steps, private, no account.
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.