Medyssey USA, INC
Reporting payments is a legal requirement; large totals often reflect large product portfolios.
$1.1Mgeneral payments (2019-2025)
$0.00research payments (2019-2025)
13clinicians 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) |
|---|---|---|---|
| Anthony Sin | Shreveport, LA | Neurological Surgery | $696,877.25 |
| Daniel Fahim | Royal Oak, MI | Neurological Surgery | $138,000.00 |
| Mark Chang | Munster, IN | Orthopaedic Surgery | $136,800.00 |
| Haroon Choudhri | Yonkers, NY | Neurological Surgery | $27,000.00 |
| Alan Mcgee | Fort Wayne, IN | Orthopaedic Surgery | $25,625.00 |
| Gary Fleischer | Nashua, NH | Orthopaedic Surgery of The Spine | $20,400.00 |
| Glen Manzano | Orlando, FL | Neurological Surgery | $17,000.00 |
| Jang Yoon | San Francisco, CA | Neurological Surgery | $15,750.00 |
| Frank Yoo | La Jolla, CA | $13,219.15 | |
| John Steck | Marrero, LA | Neurological Surgery | $11,450.00 |
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.