System 2450
Payments companies reported to CMS as associated with System 2450. "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 System 2450, 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 System 2450
These are the largest totals companies reported as associated with System 2450. 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) |
|---|---|---|---|
| Srihari Mahadev | New York, NY | Gastroenterology (Internal Medicine) | $8,047.58 |
| Travis Piester | Seattle, WA | Pediatric Gastroenterology | $6,430.71 |
| Jianhua Tau | Austin, TX | Gastroenterology (Internal Medicine) | $6,208.92 |
| Thomas Tielleman | Dallas, TX | Gastroenterology (Internal Medicine) | $5,999.96 |
| Kartik Sampath | New York, NY | Gastroenterology (Internal Medicine) | $5,782.51 |
| John Oldham | Louisville, KY | Surgery | $3,000.00 |
| Ramsey Stone | Plano, TX | Surgery | $211.41 |
| Sean Orenstein | Portland, OR | Surgery | $159.09 |
| Andrea Pakula | Thousand Oaks, CA | Surgery | $159.09 |
| Igor Belyansky | Annapolis, MD | Surgery | $159.09 |
Prescribed System 2450?
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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.