Leonard Marks, MD
Urology · Los Angeles, CANPI 1811037450
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (55.5%), entertainment and education — rather than concentrated in one kind of arrangement. 8 manufacturers reported payments, led by Hitachi Healthcare Americas Corp. at 40.1% of the total. That places this record below the midpoint for urology clinicians in CA, where the typical reported total is $2,485.
Across 30 payments — averaging $26.64 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Hitachi Healthcare Americas Corp.$321
- Rochester Medical Corporation$204
- AbbVie$97
- Angiodynamics, Inc.$74
- AstraZeneca$35
- C. R. Bard, Inc. & Subsidiaries$26
- plus $41 from 2 others
What the payments were for
- Food & beverage$44355%
- Education$354%
- Entertainment$32140%
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 |
|---|---|---|
| Hitachi Healthcare Americas Corp. | 4 | $321 |
| Rochester Medical Corporation | 18 | $204 |
| AbbVie | 3 | $97 |
| Angiodynamics, Inc. | 1 | $74 |
| AstraZeneca | 1 | $35 |
| C. R. Bard, Inc. & Subsidiaries | 1 | $26 |
| Johnson & Johnson | 1 | $22 |
| Pfizer | 1 | $20 |
How this compares
$799 in reported general payments places this provider in the 30th percentile of 1,324 urology 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| MyrbetriqMirabegron | 25 | $23,232 |
| Silodosin | 76 | $4,089 |
| Alfuzosin Hcl ErAlfuzosin Hcl | 147 | $2,819 |
| Finasteride | 64 | $858 |
| Methenamine Hippurate | 13 | $687 |
| Tamsulosin Hcl | 34 | $554 |
| Dutasteride | 13 | $532 |
| Levofloxacin | 16 | $89 |
Paid to pharmacies, not to this prescriber.
Other urology in Los Angeles
- Arie BelldegrunLos Angeles$1.8M
- Mihir DesaiLos Angeles$1.5M
- Stuart HoldenLos Angeles$1.1M
- William AronsonLos Angeles$540K
- 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
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.