Tuong Nguyen, MD
Surgery · Riverside, CANPI 1831531565
Payments from drug & device makers
What this record shows
This record is dominated by other: $41,750 of the $56,913 with a category attached, or 73.4%. Angiodynamics, Inc. accounts for 74.4% of it on its own, with 23 other manufacturers making up the rest. Reporting peaked in 2023 at $22,226 and has fallen 82.6% since, to $3,878 in 2025. Among surgery clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 182 payments — averaging $312.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Angiodynamics, Inc.$42K
- Endologix LLC$4K
- W. L. Gore & Associates, Inc.$3K
- Penumbra, Inc.$2K
- Medtronic$1K
- Cook Medical LLC$1K
- plus $3K from 18 others
What the payments were for
- Travel & lodging$2,1564%
- Food & beverage$11,50320%
- Education$1,5043%
- Other$41,75073%
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 |
|---|---|---|
| Angiodynamics, Inc. | 14 | $42,354 |
| Endologix LLC | 18 | $4,303 |
| W. L. Gore & Associates, Inc. | 27 | $2,574 |
| Penumbra, Inc. | 11 | $2,172 |
| Medtronic(2 entities) | 28 | $1,239 |
| Cook Medical LLC | 18 | $1,061 |
| Cardiovascular Systems Inc. | 12 | $811 |
| Bard Peripheral Vascular, Inc. | 19 | $582 |
| Silk Road Medical, Inc. | 4 | $316 |
| Inari Medical, Inc. | 3 | $315 |
| Boston Scientific | 4 | $296 |
| Stryker | 1 | $176 |
| Shockwave Medical, Inc | 2 | $135 |
| Integra Lifesciences Corporation | 5 | $103 |
| Aroa Biosurgery Incorporated | 2 | $97 |
| Abbott | 3 | $81 |
| Medshape, Inc. | 1 | $69 |
| Acera Surgical, Inc. | 1 | $62 |
| Imperative Care, Inc | 2 | $42 |
| Trevena, Inc. | 2 | $33 |
| Bolton Medical Inc | 2 | $31 |
| Kerecis Limited | 1 | $23 |
| Solventum Corporation | 1 | $19 |
| Baxter Healthcare | 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.
- Auryon Laser System 100-120 Vac$41,853
- RUBY Coil$1,690
- Torus Stent Graft System$1,681
- ENDOCROSS Device$1,681
- EXCLUDER AAA Endoprosthesis$1,271
- Alto Abdominal Stent Graft System$971
- Ovation$901
- AFX$901
- FLOWTRIEVER CATHETER, S$465
- CT THROMBECTOMY SYSTEM KIT$465
- Ovation iX Iliac Stent Graft$389
- AFX2 Bifurcated Endograft System$389
- ENDURANT IIS$283
- ENROUTE Transcarotid Neuroprotection System$278
- ELUVIA$258
- Diamondback Peripheral$240
- TAG Thoracic Endoprosthesis$215
- Valiant Captivia$186
- ENROUTE Transcarotid Stent$176
- ROSEN$162
How this compares
$56,913 in reported general payments places this provider in the 95th percentile of 2,363 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| XareltoRivaroxaban | 79 | $48,264 |
| EliquisApixaban | 18 | $12,292 |
| ClopidogrelClopidogrel Bisulfate | 81 | $435 |
| Atorvastatin Calcium | 55 | $329 |
| Gabapentin | 27 | $247 |
| Lorazepam | 21 | $14 |
Paid to pharmacies, not to this prescriber.
Other surgery in Riverside
- Timothy ChuterSan Francisco$8.8M
- Santiago HorganSan Diego$2.8M
- Rock LiuHayward$1.6M
- David LouriePasadena$1.4M
- Andrea PakulaThousand Oaks$1.4M
- Siew-Ming LeeFresno$1.3M
- Beemen KhalilPalo Alto$1.1M
- John LiphamLos Angeles$942K
- Alexander NedopilLodi$682K
- Barry GardinerSan Ramon$602K
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.