Quartex Addition-C
Payments companies reported to CMS as associated with Quartex Addition-C. "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 Quartex Addition-C, 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 Quartex Addition-C
These are the largest totals companies reported as associated with Quartex Addition-C. 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) |
|---|---|---|---|
| Ricardo Fontes | Chicago, IL | Neurological Surgery | $1,659.62 |
| Robert Hart | Seattle, WA | Orthopaedic Surgery | $1,644.65 |
| Daniel Denis | Kenner, LA | Neurological Surgery | $1,639.71 |
| Michael Kasten | Kalamazoo, MI | Orthopaedic Surgery of The Spine | $1,342.92 |
| Steven Ludwig | Baltimore, MD | Orthopaedic Surgery of The Spine | $167.81 |
| Philip York | Greenwood Village, CO | Orthopaedic Surgery of The Spine | $38.84 |
Prescribed Quartex Addition-C?
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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.