Jeremy Ciporen, MD
Neurological Surgery · la Jolla, CANPI 1851569305
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $2,709 of the $3,731 with a category attached, or 72.6%. Koh Young America, Inc. accounts for 76.2% of it on its own, with 6 other manufacturers making up the rest. 2025 is the largest year on record at $2,925, more than ten times the $41 reported in 2021. That places this record below the midpoint for neurological surgery clinicians in CA, where the typical reported total is $3,356.
Across 15 payments — averaging $248.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Koh Young America, Inc.$3K
- Zimmer Biomet$417
- Zimvie Inc.$209
- Stryker$85
- Globus Medical$84
- Microtransponder, Inc.$77
- plus $18 from 1 others
What the payments were for
- Consulting fees$2,70973%
- Travel & lodging$2507%
- Food & beverage$35510%
- Education$41711%
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 |
|---|---|---|
| Koh Young America, Inc. | 3 | $2,841 |
| Zimmer Biomet | 2 | $417 |
| Zimvie Inc. | 1 | $209 |
| Stryker | 3 | $85 |
| Globus Medical | 4 | $84 |
| Microtransponder, Inc. | 1 | $77 |
| Viiv Healthcare Company | 1 | $18 |
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.
- Geniant Cranial$2,750
- Mobi-C$626
- 3D Model Print$626
How this compares
$3,731 in reported general payments places this provider in the 50th percentile of 773 neurological surgery 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 neurological surgery in la Jolla
- Christopher AmesSan Francisco$7.1M
- Larry KhooLos Angeles$2.8M
- Samy AbdouSan Diego$2.4M
- Bret AbshireMurrieta$2.3M
- William TaylorSan Diego$2.1M
- Tooraj GravoriEncino$2M
- Ali MesiwalaRancho Cucamonga$1.5M
- Joseph OsorioSan Diego$1.3M
- Ian JohnsonFresno$1.3M
- Aaron Cohen-GadolLos Angeles$1.3M
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.