Robert Hesselgesser, MD
Radiation Oncology · Orange, CANPI 1710979687
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 16 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 10 manufacturers reported payments, led by Progenics Pharmaceuticals, Inc. at 51.2% of the total. Reporting peaked in 2024 at $304 and has fallen 70.3% since, to $90 in 2025.
Across 16 payments — averaging $37.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Progenics Pharmaceuticals, Inc.$309
- Blue Earth Diagnostics$59
- West Therapeutics Development, LLC$43
- Siemens Medical Solutions USA, Inc.$38
- Teleflex LLC$32
- Dendreon Pharmaceuticals LLC$30
- plus $92 from 4 others
What the payments were for
- Food & beverage$604100%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Progenics Pharmaceuticals, Inc. | 5 | $309 |
| Blue Earth Diagnostics | 2 | $59 |
| West Therapeutics Development, LLC | 2 | $43 |
| Siemens Medical Solutions USA, Inc. | 1 | $38 |
| Teleflex LLC | 1 | $32 |
| Dendreon Pharmaceuticals LLC | 1 | $30 |
| Novocure Inc. | 1 | $26 |
| Myriad Genetic Laboratories, Inc. | 1 | $25 |
| Boston Scientific | 1 | $21 |
| GT Medical Technologies, Inc | 1 | $20 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- PYLARIFY$240
How this compares
$604 in reported general payments places this provider in the 55th percentile of 627 radiation oncology providers in California.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other radiation oncology in Orange
- Megan DalyOrange$32K
- Aaron SimonOrange$10K
- Rakesh PatelLos Gatos$1.3M
- Amir LavafPalm Springs$411K
- Albert ChangLos Angeles$290K
- Arya AminiDuarte$265K
- Rizwan NuraniApple Valley$220K
- Drew MoghanakiLos Angeles$183K
- Jyoti MayadevSan Diego$170K
- Percy LeeIrvine$125K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.