Medicare Part D Prescribers in Fullerton, California
10 flagged and high-volume prescribers across 3 medical specialties.
Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026
10
Providers
$6.9M
Total Drug Cost
2
High Risk
25.6%
Avg Opioid Rate
High-Risk Providers in Fullerton
Providers flagged by our multi-factor risk scoring model. Risk scores are statistical indicators, not allegations of wrongdoing. Learn about our methodology.
| Provider | Drug Cost | Opioid Rate |
|---|---|---|
| Aileen Estrada | $317K | 61.1% |
| Amy Nguyen | $195K | 63.7% |
Top Prescribers by Drug Cost
| Provider | Claims | Drug Cost |
|---|---|---|
| John Lee | 19,578 | $2.6M |
| Ruben Cabral | 19,341 | $2.3M |
| Bradley Borsari | 13,471 | $953K |
| Kiho Woo | 6,496 | $461K |
| Aileen EstradaHigh Risk | 5,708 | $317K |
| Amy NguyenHigh Risk | 5,317 | $195K |
| Paul Lee | 991 | $65K |
| Emily Hipwell | N/A | N/A |
| Nina Ton | N/A | N/A |
| Lisa Paradiso | N/A | N/A |
Specialties in Fullerton
Physician Assistant
5 providers
Internal Medicine
4 providers
Interventional Pain Management
1 provider
Explore More
Data from CMS Medicare Part D Prescriber Public Use File, 2023. Only providers meeting CMS disclosure thresholds are included. Risk scores are statistical indicators based on prescribing pattern analysis — not allegations of fraud or wrongdoing.