Xf-1600
Payments companies reported to CMS as associated with Xf-1600. "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 Xf-1600, 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 Xf-1600
These are the largest totals companies reported as associated with Xf-1600. 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) |
|---|---|---|---|
| Melissa Ulas | Philadelphia, PA | $5,914.50 | |
| Caroline An | Indianapolis, IN | Clinical Pathology/Laboratory Medicine | $4,594.25 |
| Olga Pozdnyakova | Philadelphia, PA | Anatomic Pathology & Clinical Pathology | $2,513.50 |
| Brent Wood | Seattle, WA | Clinical Pathology/Laboratory Medicine | $2,500.00 |
| Emily Mason | Nashville, TN | Anatomic Pathology & Clinical Pathology | $1,500.00 |
| Katherine Devitt | Burlington, VT | Anatomic Pathology & Clinical Pathology | $1,250.00 |
| Adam Hoffhines | Tulsa, OK | Anatomic Pathology & Clinical Pathology | $11.93 |
Prescribed Xf-1600?
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.