G-Cem
Payments companies reported to CMS as associated with G-Cem. "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 G-Cem, 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 G-Cem
These are the largest totals companies reported as associated with G-Cem. 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) |
|---|---|---|---|
| Brian Novy | Newhall, CA | Dentist | $25,057.57 |
| Matthew Nejad | West Hollywood, CA | General Practice (Dentist) | $23,108.51 |
| Marc Geissberger | Greenbrae, CA | General Practice (Dentist) | $17,036.00 |
| Abdi Sameni | Los Angeles, CA | General Practice (Dentist) | $15,000.00 |
| Timothy Bizga | Parma, OH | Dentist | $14,907.20 |
| Miles Cone | Portland, ME | Prosthodontics | $12,500.00 |
| Jeanette Maclean | Glendale, AZ | Pediatric Dentistry | $11,350.73 |
| Victor Cedillo Felix | Chula Vista, CA | General Practice (Dentist) | $8,144.92 |
| Mark Kleive | Black Mountain, NC | Dentist | $8,118.43 |
| Nader Yermian | Los Angeles, CA | General Practice (Dentist) | $7,997.40 |
Prescribed G-Cem?
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.