Daphne Yen-Douangmala, DPM
Foot & Ankle Surgery · Vallejo, CANPI 1902117575
Payments from drug & device makers
Across 24 payments — averaging $24.03 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Organogenesis Inc.$215
- Stryker$113
- Smith+Nephew$71
- Johnson & Johnson$68
- Zimmer Biomet$49
- Averitas Pharma Inc.$29
- plus $32 from 2 others
What the payments were for
- Food & beverage$577100%
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 |
|---|---|---|
| Organogenesis Inc. | 8 | $215 |
| Stryker | 3 | $113 |
| Smith+Nephew | 5 | $71 |
| Johnson & Johnson | 3 | $68 |
| Zimmer Biomet | 2 | $49 |
| Averitas Pharma Inc. | 1 | $29 |
| Globus Medical | 1 | $25 |
| Bard Peripheral Vascular, Inc. | 1 | $7 |
How this compares
$577 in reported general payments places this provider in the 25th percentile of 1,126 foot & ankle 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 |
|---|---|---|
| Ciclopirox | 155 | $2,739 |
| Clotrimazole | 119 | $1,887 |
| Diclofenac Sodium | 74 | $1,118 |
| Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip | 21 | $809 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 38 | $350 |
| Gabapentin | 55 | $318 |
| Mupirocin | 20 | $215 |
| Ammonium Lactate | 13 | $166 |
| Terbinafine Hcl | 30 | $152 |
| Econazole Nitrate | 13 | $132 |
| Doxycycline Hyclate | 11 | $113 |
| Cephalexin | 18 | $108 |
Paid to pharmacies, not to this prescriber.
Other foot & ankle surgery in Vallejo
- John ZimmermanBakersfield$4.6M
- Eric GizaSacramento$3.7M
- Thomas HarrisPasadena$3M
- Felix SigalLos Angeles$2.2M
- Thomas ChangSanta Rosa$2.1M
- Michael CoughlinSan Francisco$1.6M
- Vladimir ZeetserEncino$677K
- Jason NowakRedding$526K
- Candice BradyCamarillo$462K
- Andrew HsuOrange$456K
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.