Doron Kahana, MD
Pediatric Gastroenterology · Torrance, CANPI 1467698720
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $1,071 of the $1,626 with a category attached, or 65.9%. Fresenius Kabi USA, LLC accounts for 69.5% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2019 at $893 and has fallen 83.6% since, to $146 in 2024.
Across 22 payments — averaging $73.90 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Fresenius Kabi USA, LLC$1K
- Molnlycke Health Care US, LLC$150
- Gilead$146
- AbbVie$83
- Boston Scientific$64
- Conmed Corporation$18
- plus $34 from 2 others
What the payments were for
- Travel & lodging$1,07166%
- Food & beverage$53733%
- Education$181%
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 |
|---|---|---|
| Fresenius Kabi USA, LLC | 8 | $1,130 |
| Molnlycke Health Care US, LLC | 1 | $150 |
| Gilead | 1 | $146 |
| AbbVie | 4 | $83 |
| Boston Scientific | 2 | $64 |
| Conmed Corporation | 1 | $18 |
| Travere Therapeutics, Inc. | 4 | $18 |
| Shire North American Group Inc | 1 | $16 |
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.
- Omegaven$881
- Mepilex Border Flex$150
- Exufiber Ag$150
- Exufiber$150
- Mextra Superabsorbant$150
- Melgisorb Ag$150
How this compares
$1,626 in reported general payments places this provider in the 65th percentile of 220 pediatric gastroenterology providers in California.
See all pediatric gastroenterology 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 pediatric gastroenterology in Torrance
- David ZiringLos Angeles$206K
- Nathan MinkoffMadera$131K
- Paul HarmatzOakland$109K
- Robert VenickLos Angeles$78K
- Jessica DeasLos Angeles$74K
- Amber HildrethSan Diego$67K
- Ariel FeldsteinSan Diego$60K
- Kathleen SchwarzSan Diego$58K
- Andrew DickersonSan Diego$58K
- Mary Abigail GarciaSan Diego$51K
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.