Quantra Qplus System
Payments companies reported to CMS as associated with Quantra Qplus System. "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 Quantra Qplus System, 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 Quantra Qplus System
These are the largest totals companies reported as associated with Quantra Qplus System. 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) |
|---|---|---|---|
| Jonathan Chow | Washington, DC | Critical Care Medicine (Anesthesiology) | $15,877.50 |
| Joseph Griggs | Albuquerque, NM | Anatomic Pathology & Clinical Pathology | $8,996.97 |
| Sean Yates | Dallas, TX | Blood Banking & Transfusion Medicine | $1,660.66 |
| Asad Shah | Laguna Hills, CA | Thoracic Surgery (Cardiothoracic Vascular Surgery) | $1,570.97 |
| Pierre Tibi | Prescott, AZ | Thoracic Surgery (Cardiothoracic Vascular Surgery) | $1,397.85 |
| Anil Tiwari | Irvine, CA | Anesthesiology | $1,377.18 |
| Melissa Burger | Dallas, TX | Anesthesiology | $1,267.83 |
| Gagan Mathur | Orange, CA | Blood Banking & Transfusion Medicine | $1,085.11 |
| Majed Refaai | Rochester, NY | Clinical Pathology | $1,070.89 |
| Daniel Nekola | Massapequa, NY | $1,013.58 |
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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.