GlassScriptArkis Biosciences INC
Reporting payments is a legal requirement; large totals often reflect large product portfolios.
$165Kgeneral payments (2019-2025)
$0.00research payments (2019-2025)
47clinicians paid
General and research payments are shown separately, never blended. Research payments are often institution-directed and tied to clinical trials.
General payments by year
General payments only, as reported to CMS. Research payments are totaled above and not included in these bars.
Specialties it works with most
Clinicians with the largest reported totals
Often long-running consulting, speaking, or advisory relationships, which companies must report by law. A large total is not evidence of anything improper.
| Clinician | Location | Specialty | General payments (2019-2025) |
|---|---|---|---|
| James Killeffer | Knoxville, TN | Neurological Surgery | $162,551.15 |
| Ryan Grant | Danville, PA | Neurological Surgery | $222.59 |
| Catherine Mazzola | Morristown, NJ | Neurological Surgery | $165.63 |
| Abraham Rayhaun | Long Beach, CA | Neurological Surgery | $164.42 |
| Ramin Javahery | Long Beach, CA | Neurological Surgery | $152.47 |
| Giorgio Rotoli | Oradell, NJ | Neurological Surgery | $145.12 |
| Hooshang Pak | Long Beach, CA | Neurological Surgery | $119.04 |
| Yaw Sarpong | Jackson, MI | Neurological Surgery | $115.31 |
| Sanjay Patra | Grand Rapids, MI | Neurological Surgery | $108.63 |
| Justin Singer | Grand Rapids, MI | Neurological Surgery | $108.63 |
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.