Mast Quadrant Retractor System
Payments companies reported to CMS as associated with Mast Quadrant Retractor 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 Mast Quadrant Retractor 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 Mast Quadrant Retractor System
These are the largest totals companies reported as associated with Mast Quadrant Retractor 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) |
|---|---|---|---|
| Kirk Thompson | Germantown, TN | Orthopaedic Surgery | $3,600.00 |
| Luis Tumialan | Scottsdale, AZ | Neurological Surgery | $3,400.00 |
| Adam Kanter | Pittsburgh, PA | Neurological Surgery | $800.00 |
| Lee Tan | San Francisco, CA | Neurological Surgery | $800.00 |
| Hamid Hassanzadeh | Bethesda, MD | Orthopaedic Surgery | $800.00 |
| Francis Shen | Charlottesville, VA | Orthopaedic Surgery of The Spine | $700.00 |
| Kraig Kristof | Toledo, OH | Orthopaedic Surgery | $650.00 |
| Jordan Iordanou | Huntington, NY | Neurological Surgery | $165.45 |
| Andrew Johnson | Chicago, IL | Neurological Surgery | $38.60 |
| Andrew Cordover | Birmingham, AL | Orthopaedic Surgery | $29.14 |
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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.