Zeguang Ren, MD
Neurological Surgery · Tampa, FLNPI 1770640856
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (46.5%), travel and lodging and food and beverage — rather than concentrated in one kind of arrangement. 7 manufacturers reported payments, led by Penumbra, Inc. at 54.7% of the total. Reporting peaked in 2019 at $4,919 and has fallen 99.6% since, to $20 in 2024. That places this record below the midpoint for neurological surgery clinicians in FL, where the typical reported total is $5,245.
Across 18 payments — averaging $286.45 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Penumbra, Inc.$3K
- Microvention, Inc.$1K
- Corindus Inc.$563
- Omniscient Neurotechnology America Ltd$138
- Baxter Healthcare$107
- Zimmer Biomet$105
- plus $20 from 1 others
Across 52 payments — averaging $1054.23 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.
- Penumbra, Inc.$55K
What the payments were for
- Speaking & faculty fees$2,40047%
- Travel & lodging$1,72133%
- Food & beverage$1,03520%
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 |
|---|---|---|
| Penumbra, Inc. | 5 | $2,818 |
| Microvention, Inc. | 6 | $1,404 |
| Corindus Inc. | 3 | $563 |
| Omniscient Neurotechnology America Ltd | 1 | $138 |
| Baxter Healthcare | 1 | $107 |
| Zimmer Biomet | 1 | $105 |
| Nevro Corp. | 1 | $20 |
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.
- Penumbra System$2,600
- WEB$1,196
- CorPath GRX$456
- LVIS$139
- LVIS Jr.$139
- Quicktome$138
- Penumbra Jet 7$135
- Penumbra SMART Coil$135
- FLOSEAL$107
- Thinflap$105
How this compares
$5,156 in reported general payments places this provider in the 45th percentile of 556 neurological surgery providers in Florida.
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 Tampa
- Rohit VasanTampa$1.5M
- Puya AlikhaniTampa$582K
- Steven TresserTampa$388K
- Elias DakwarTampa$348K
- Juan Valdivia ValdiviaTampa$208K
- Kunal VakhariaTampa$190K
- Gabriel Gonzales PortilloTampa$150K
- Patrick KimTampa$145K
- Stephen ParkerJacksonville$18.7M
- Eric PetersonMiami$10.1M
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.