Inogen
Payments companies reported to CMS as associated with Inogen. "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 Inogen, 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 Inogen
These are the largest totals companies reported as associated with Inogen. 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) |
|---|---|---|---|
| Richard Casaburi | Torrance, CA | Pulmonary Disease | $6,768.26 |
| Frederic Seifer | Potsdam, NY | Pulmonary Disease | $5,566.73 |
| William Garvey | Birmingham, AL | Endocrinology, Diabetes & Metabolism | $5,143.89 |
| Neil Macintyre | Durham, NC | Critical Care Medicine (Internal Medicine) | $3,500.00 |
| David Halpin | Lakewood, CO | Cardiovascular Disease | $1,500.00 |
| Ayodeji Adegunsoye | Chicago, IL | Pulmonary Disease | $1,350.00 |
| Nicholas Hill | Boston, MA | Pulmonary Disease | $1,350.00 |
| Amit Chakravarty | Jacksonville, FL | Pulmonary Disease | $320.95 |
| William Gill | Fleming Island, FL | Pulmonary Disease | $210.10 |
| Stuart Shah | Fleming Island, FL | Pulmonary Disease | $177.55 |
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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.