Medicare Part D Prescribers in Westminster, California
17 flagged and high-volume prescribers across 6 medical specialties.
Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026
17
Providers
$47.8M
Total Drug Cost
1
High Risk
0.6%
Avg Opioid Rate
High-Risk Providers in Westminster
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 |
|---|---|---|
| Gary Ohashi | $349K | 0.7% |
Top Prescribers by Drug Cost
| Provider | Claims | Drug Cost |
|---|---|---|
| Cuong-Dung Do | 30,681 | $8.6M |
| Chinh Mai | 37,442 | $6.2M |
| Hieu N Tram | 21,094 | $4.1M |
| Theresa Thanh Nguyen | 15,989 | $3.5M |
| Thuan Vo | 22,898 | $3.3M |
| Anhtuan Nguyen | 23,752 | $3.1M |
| Thu Thuy Huynh | 23,153 | $3.1M |
| Loi Luu | 23,822 | $2.9M |
| Hitesh Patel | 23,729 | $2.7M |
| Chinh Huynh | 18,239 | $2.5M |
| Duc Tran | 14,109 | $2.2M |
| Vuong Nguyen | 12,664 | $2.0M |
| Nadim Dagher | 11,561 | $1.5M |
| Khue Vu | 9,931 | $888K |
| Phuc Nguyen | 8,938 | $745K |
| Gary OhashiHigh Risk | 5,139 | $349K |
| Tien Nguyen | N/A | N/A |
Specialties in Westminster
Internal Medicine
10 providers
Family Practice
3 providers
Ophthalmology
1 provider
General Practice
1 provider
Osteopathic Manipulative Medicine
1 provider
Nurse Practitioner
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.