Amitiza
Payments companies reported to CMS as associated with Amitiza. "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 Amitiza, 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 Amitiza
These are the largest totals companies reported as associated with Amitiza. 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) |
|---|---|---|---|
| David Chang | Wildomar, CA | Nephrology (Internal Medicine) | $32.38 |
| Rodolfo Batarse | Rancho Mirage, CA | Nephrology (Internal Medicine) | $31.08 |
| Aamir Raza | San Bernardino, CA | Nephrology (Internal Medicine) | $25.89 |
| Rungwasee Rattanavich | Loma Linda, CA | Nephrology (Internal Medicine) | $25.89 |
| Rafael Villicana | Loma Linda, CA | Nephrology (Internal Medicine) | $25.89 |
| Thanh Hoang | Loma Linda, CA | Nephrology (Internal Medicine) | $25.89 |
| Surakshya Regmi | Loma Linda, CA | Internal Medicine | $25.89 |
| Lazaro Cherem | Houston, TX | Nephrology (Internal Medicine) | $20.36 |
Prescribed Amitiza?
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.