Comet
Payments companies reported to CMS as associated with Comet. "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 Comet, 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 Comet
These are the largest totals companies reported as associated with Comet. 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) |
|---|---|---|---|
| Ismael Ortiz-Cartagena | Bayamon, PR | Interventional Cardiology | $1,003.45 |
| Seyed Mohammad Khalafi | Fort Worth, TX | Thoracic Surgery (Cardiothoracic Vascular Surgery) | $392.85 |
| Nils Johnson | Houston, TX | Cardiovascular Disease | $372.74 |
| Pratik Patel | Newark, NJ | Pulmonary Disease | $307.11 |
| Dara Colasurdo | New York, NY | Physician Assistant | $260.61 |
| Hannah Ferderber | New York, NY | Medical | $256.01 |
| Karan Gupta | Weatherford, TX | Interventional Cardiology | $244.42 |
| Hassan Ashraf | Houston, TX | Internal Medicine | $235.65 |
| Cree Huettl | New York, NY | Medical | $230.20 |
| Marc Lachance | New York, NY | Medical | $214.36 |
Prescribed Comet?
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.