Allen Chen, MD
Physical Medicine & Rehabilitation · Los Angeles, CANPI 1992810790
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 98.2% of the total across 100 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 28 manufacturers, the largest accounting for just 19.2% — the pattern of someone who eats at a lot of different presentations. Among physical medicine & rehabilitation clinicians in CA with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 100 payments — averaging $90.74 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$2K
- Medtronic$821
- Stimwave Technologies Incorporated$815
- Abbott$718
- SPR Therapeutics, Inc$654
- Integra Lifesciences Corporation$485
- plus $4K from 22 others
What the payments were for
- Food & beverage$8,90998%
- Gifts$1652%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Boston Scientific | 16 | $1,739 |
| Medtronic | 8 | $821 |
| Stimwave Technologies Incorporated | 14 | $815 |
| Abbott | 5 | $718 |
| SPR Therapeutics, Inc | 9 | $654 |
| Integra Lifesciences Corporation | 3 | $485 |
| MML US, Inc. | 3 | $408 |
| Nalu Medical, Inc. | 7 | $403 |
| Stryker | 3 | $390 |
| Vertos Medical, Inc. | 3 | $359 |
| Curonix LLC | 3 | $326 |
| Innovation Technologies Inc | 2 | $307 |
| Stratus Medical, LLC | 2 | $174 |
| Saol Therapeutics Inc. | 5 | $165 |
| Merz Pharmaceuticals, LLC | 2 | $153 |
| AbbVie | 1 | $149 |
| Relievant Medsystems, Inc. | 2 | $146 |
| Biotronik NRO, Inc. | 1 | $132 |
| Nevro Corp. | 1 | $129 |
| Regeneron Healthcare Solutions, Inc. | 1 | $125 |
| Merz North America, Inc. | 1 | $125 |
| Spinal Simplicity, LLC | 2 | $91 |
| Team_makena_llc | 1 | $85 |
| Siemens Medical Solutions USA, Inc. | 1 | $68 |
| Avanos Medical | 1 | $48 |
| Axonics, Inc. | 1 | $30 |
| Boehringer Ingelheim | 1 | $18 |
| Avita Medical Americas, LLC | 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.
- Intracept$529
- INTELLIS ADAPTIVESTIM$442
- mild Device Kit$414
- ReActiv8$381
- CODMAN CERTAS$351
- CUSA CLARITY$351
- Proclaim Family of SCS IPGs$326
- Irrisept$307
- SPRINT PNS System$303
- INFINION$290
- WaveWriter Alpha Prime 16$283
- PNS FREEDOM-4A PERMANENT NEUROSTIMULATOR RECEIVER KIT CHANNEL A$263
- XEOMIN$238
- Nalu Neurostimulation System$233
- DURAGEN DURAL GRAFT MATRIX$209
- DURASEAL EXACT SPINAL SEALANT SYSTEM$209
- HAKIM$209
- PROCLAIM$176
- OPTABLATE$174
- SPINEJACK$174
How this compares
$9,074 in reported general payments places this provider in the 90th percentile of 830 physical medicine & rehabilitation providers in California.
See all physical medicine & rehabilitation 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 | 27 | $549 |
Paid to pharmacies, not to this prescriber.
Other physical medicine & rehabilitation in Los Angeles
- Steven SampsonLos Angeles$63K
- Kyle YangLos Angeles$39K
- Jae JungLos Angeles$34K
- Hardik ParikhLos Angeles$19K
- John ZhengLos Angeles$17K
- Ramandeep GuraiLos Angeles$14K
- Benjamin LeshinLos Angeles$11K
- Brian SunwooLos Angeles$9K
- Ziyad AyyoubParamount$322K
- Pratik GandhiAnaheim$122K
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.