William Aronson
Urology · Los Angeles, CANPI 1639194095
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $401,693 of the $539,552 with a category attached, or 74.4%. 23 manufacturers reported payments, led by Astellas Pharma US Inc at 30.6% of the total. Among urology clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 525 payments — averaging $1027.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Astellas Pharma US Inc$165K
- Bayer$149K
- Johnson & Johnson$86K
- Pfizer$86K
- AstraZeneca$11K
- Sumitomo Pharma America, Inc.$7K
- plus $36K from 17 others
Across 74 payments — averaging $5563.01 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Progenics Pharmaceuticals, Inc.$168K
- Bayer$151K
- Dendreon Pharmaceuticals LLC$35K
- Ferring Pharmaceuticals AS$29K
- AstraZeneca$21K
- Ferring International Pharmascience Center US$7K
What the payments were for
- Consulting fees$57,20911%
- Speaking & faculty fees$401,69374%
- Travel & lodging$72,18513%
- Food & beverage$8,2532%
- Education$2120%
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 |
|---|---|---|
| Astellas Pharma US Inc | 119 | $165,352 |
| Bayer | 121 | $148,842 |
| Johnson & Johnson(2 entities) | 115 | $86,143 |
| Pfizer | 73 | $85,872 |
| AstraZeneca | 12 | $10,543 |
| Sumitomo Pharma America, Inc. | 2 | $6,754 |
| Blue Earth Diagnostics | 7 | $6,212 |
| Astellas Pharma Global Development | 2 | $5,225 |
| Progenics Pharmaceuticals, Inc. | 4 | $5,075 |
| Amgen | 4 | $5,039 |
| Myovant Sciences Inc. | 4 | $4,865 |
| Janssen Scientific Affairs, LLC | 11 | $3,345 |
| Ferring Pharmaceuticals Inc. | 7 | $3,046 |
| Tolmar Pharmaceuticals, Inc. | 1 | $1,300 |
| Dendreon Pharmaceuticals LLC | 21 | $861 |
| Sanofi | 3 | $316 |
| Boston Scientific | 7 | $226 |
| Procept Biorobotics Corporation | 1 | $205 |
| Astellas Pharma Inc | 1 | $141 |
| AbbVie | 6 | $127 |
| Immunitybio, Inc. | 2 | $30 |
| Photocure Inc | 1 | $19 |
| Exelixis Inc. | 1 | $14 |
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.
How this compares
$539,552 in reported general payments places this provider in the 95th percentile of 1,324 urology providers in California.
Other urology in Los Angeles
- Arie BelldegrunLos Angeles$1.8M
- Mihir DesaiLos Angeles$1.5M
- Stuart HoldenLos Angeles$1.1M
- Amir LebastchiLos Angeles$478K
- Nazy ZomorodianLos Angeles$309K
- Jeffrey Loh-DoyleLos Angeles$308K
- Siamak DaneshmandLos Angeles$306K
- Karim ChamieLos Angeles$291K
- Brian ShuchLos Angeles$166K
- Robert ReiterLos Angeles$145K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.