John Oconnor, MD
Radiation Oncology · Los Angeles, CANPI 1396709721
Payments from drug & device makers
Across 2 payments — averaging $23.32 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Incyte Corporation$24
- Geron Corporation$23
What the payments were for
- Food & beverage$47100%
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.
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 |
|---|---|---|
| Incyte Corporation | 1 | $24 |
| Geron Corporation | 1 | $23 |
How this compares
$47 in reported general payments places this provider in the 10th 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Mometasone Furoate | 35 | $835 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Los Angeles
- Amar KishanLos Angeles$1.1M
- Albert ChangLos Angeles$989K
- Jason YeLos Angeles$399K
- Robert ChinLos Angeles$217K
- Drew MoghanakiLos Angeles$183K
- Alan LeeLos Angeles$114K
- Ann RaldowLos Angeles$46K
- Michael SteinbergLos Angeles$32K
- Lindsay HwangLos Angeles$32K
- Loren Mellla Jolla$10M
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.