Stephen Chen, MD
Vascular & Interventional Radiology · Houston, TXNPI 1396798500
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (37.1%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. 22 manufacturers reported payments, led by Balt USA, LLC at 48.6% of the total. Reporting peaked in 2021 at $10,230 and has fallen 67.8% since, to $3,295 in 2025.
Across 108 payments — averaging $200.81 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Balt USA, LLC$11K
- Boston Scientific$3K
- Penumbra, Inc.$3K
- Stryker$3K
- Johnson & Johnson$315
- Medtronic$274
- plus $2K from 16 others
Across 1 payment — averaging $30,000 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.
- Siemens Medical Solutions USA, Inc.$30K
What the payments were for
- Consulting fees$6,61531%
- Speaking & faculty fees$1,8008%
- Travel & lodging$5,23624%
- Food & beverage$8,03737%
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 |
|---|---|---|
| Balt USA, LLC | 38 | $10,535 |
| Boston Scientific | 8 | $3,391 |
| Penumbra, Inc. | 10 | $2,675 |
| Stryker | 22 | $2,502 |
| Johnson & Johnson | 3 | $315 |
| Medtronic(2 entities) | 3 | $274 |
| Qapel Medical Inc | 1 | $265 |
| Medical Device Business Services, Inc. | 2 | $262 |
| Inspiremd Ltd | 2 | $261 |
| Microvention, Inc. | 6 | $223 |
| Trisalus Life Sciences, Inc. | 1 | $154 |
| Angiodynamics, Inc. | 1 | $150 |
| Delcath Systems | 1 | $140 |
| Sanofi-aventis U.S. LLC | 1 | $125 |
| Biocompatibles, Inc. | 1 | $113 |
| Bayer | 1 | $113 |
| Silk Road Medical, Inc. | 2 | $74 |
| Imperative Care, Inc | 1 | $40 |
| Stemline Therapeutics Inc. | 1 | $23 |
| Inari Medical, Inc. | 1 | $18 |
| Teva Pharmaceuticals USA, Inc. | 1 | $17 |
| Perfuze Inc | 1 | $17 |
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.
- CLINICAL TRIAL PRODUCT$2,585
- Optima Coil System$2,342
- Penumbra System$2,122
- IVS - VERTEBRAL AUGMENTATION PRODUCTS$1,007
- Prestige Coil System$895
- Carrier Delivery Catheter$667
- OBSIDIO$268
- CGuard Prime Carotid Stent System$261
- Eclipse 2L$203
- SURPASS$202
- TheraSphere Y90 Glass Microspheres 10 GBq$173
- RED 72$167
- TRUFILL$160
- OSTEOCOOL RF ABLATION SYSTEM$159
- TARGET$155
- TRINAV INFUSION SYSTEM$154
- Indigo System$154
- AlphaVac$150
- Hepzato Kit$140
- EMBOGUARD$132
How this compares
$21,687 in reported general payments places this provider in the 80th percentile of 299 vascular & interventional radiology providers in Texas.
See all vascular & interventional radiology providers in Texas →
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 |
|---|---|---|
| ClopidogrelClopidogrel Bisulfate | 11 | $91 |
Paid to pharmacies, not to this prescriber.
Other vascular & interventional radiology in Houston
- Orlando DiazHouston$611K
- Rahul ShethHouston$410K
- Miguel MonteroHouston$386K
- Joshua KubanHouston$301K
- Peiman HabibollahiHouston$254K
- Ahmed Abdel AalHouston$147K
- Varshana GurusamyHouston$141K
- Armeen MahvashHouston$122K
- Andrew DoeHouston$106K
- Donald GarbettHouston$77K
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.