Tien Nguyen, MD
Neurological Surgery · Fountain Valley, CANPI 1356385025
Payments from drug & device makers
Across 337 payments — averaging $783.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Lilly USA, LLC$133K
- Biogennix, LLC$43K
- Precision Spine, Inc.$39K
- Eli Lilly$34K
- Pfizer$6K
- Choice Spine, LLC$5K
- plus $4K from 25 others
Across 2 payments — averaging $880.24 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.
- Pfizer$1K
- Eli Lilly$668
What the payments were for
- Royalty or licence$73,51832%
- Consulting fees$22,90010%
- Speaking & faculty fees$117,67851%
- Travel & lodging$5,7322%
- Food & beverage$9,5774%
- Education$320%
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 |
|---|---|---|
| Lilly USA, LLC | 197 | $132,679 |
| Biogennix, LLC | 12 | $42,986 |
| Precision Spine, Inc. | 24 | $39,146 |
| Eli Lilly | 2 | $34,200 |
| Pfizer | 17 | $5,972 |
| Choice Spine, LLC | 1 | $4,500 |
| Sun Pharmaceutical Industries Inc. | 1 | $800 |
| Biotissue Holdings Inc. | 29 | $767 |
| Novartis | 6 | $560 |
| Medtronic(2 entities) | 8 | $476 |
| Surgical Theater. Inc. | 2 | $254 |
| Abbott | 2 | $217 |
| Johnson & Johnson(3 entities) | 5 | $213 |
| Zimmer Biomet | 7 | $191 |
| UCB, Inc. | 1 | $144 |
| Silk Road Medical, Inc. | 1 | $135 |
| AbbVie | 6 | $131 |
| Gilead | 1 | $118 |
| Osteocentric Technologies, Inc. | 1 | $72 |
| Medshape, Inc. | 1 | $69 |
| Getinge USA Sales, LLC | 2 | $48 |
| Orthofix Medical, Inc. | 1 | $35 |
| Zimvie Inc. | 2 | $33 |
| Baxter Healthcare | 1 | $32 |
| Integra Lifesciences Corporation | 1 | $29 |
| Eli Lilly Export S.A. Puerto Rico Branch | 1 | $27 |
| GSK | 1 | $19 |
| Biofrontera Inc. | 1 | $17 |
| Smith+Nephew | 1 | $15 |
| Lemaitre Vascular, Inc. | 1 | $15 |
| Merck | 1 | $14 |
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.
- TALTZ$87,913
- SHURFIT ACIF 2C$54,821
- Sypher$34,850
- EBGLYSS$32,084
- INTERVERTEBRAL BODY FUSION DEVICE$23,066
- ACIF 2C$9,212
- Agilon Surgical Matrix$7,000
- CIBINQO$4,853
- Tiger Shark C$4,500
- TPLIF 2C$4,444
- TLIF 2C$2,205
- EUCRISA$825
- ILUMYA$800
- ShurFit TLIF Ti 3D Curved Cage$500
- Curved Interbody Instrument Design$500
- Interbody Material Options$500
- ENROUTE Transcarotid Neuroprotection System$271
- OLUMIANT$241
- COSENTYX$212
- Bimzelx$144
How this compares
$263,913 in reported general payments places this provider in the 90th 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Gabapentin | 152 | $1,413 |
| Acetaminophen-CodeineAcetaminophen With Codeine | 26 | $419 |
| Tramadol Hcl | 38 | $156 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 19 | $152 |
| Pregabalin | 12 | $26 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Fountain Valley
- Geoffrey ManleySan Francisco$24.9M
- Christopher AmesSan Francisco$7.1M
- Jamshid SalehRedding$4.1M
- Bruce McCormackSan Francisco$3.9M
- Andrew SchreiberSanta Ana$3.9M
- Larry KhooLos Angeles$3M
- Jennie TaylorSan Francisco$2.7M
- Joseph CiacciSan Diego$2.6M
- Nicholas ButowskiSan Francisco$2.4M
- Samy AbdouSan Diego$2.4M
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.