Microstream
Payments companies reported to CMS as associated with Microstream. "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 Microstream, 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 Microstream
These are the largest totals companies reported as associated with Microstream. 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) |
|---|---|---|---|
| Ashish Chawla | West Chester, PA | Gastroenterology (Internal Medicine) | $18,238.90 |
| Sergey Karamnov | Burlington, MA | Anesthesiology | $17,350.00 |
| Susan Thibeault | New Haven, CT | Nurse Anesthetist, Certified Registered | $7,766.69 |
| Brian Berry | Morgantown, WV | Nurse Anesthetist, Certified Registered | $4,885.72 |
| Basem Abdelmalak | Cleveland, OH | Anesthesiology | $4,800.00 |
| Frank Overdyk | Charleston, SC | Anesthesiology | $3,347.75 |
| Jeffrey Goodloe | Tulsa, OK | Emergency Medicine | $2,859.54 |
| Gerald Hickson | Nashville, TN | Pediatrics | $2,750.00 |
| Sabry Ayad | Cleveland, OH | Anesthesiology | $2,187.50 |
| Charles Ray | Aurora, CO | Diagnostic Radiology | $1,420.00 |
Prescribed Microstream?
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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.