Medicare Part D Prescribers in Fontana, California
11 flagged and high-volume prescribers across 6 medical specialties.
Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026
11
Providers
$2.3M
Total Drug Cost
0
High Risk
7.0%
Avg Opioid Rate
Top Prescribers by Drug Cost
| Provider | Claims | Drug Cost |
|---|---|---|
| William Scott | 13,012 | $677K |
| Edward Im | 11,145 | $569K |
| Lisa Choi-Flores | 10,499 | $512K |
| John Sharpe Jr. | 12,885 | $489K |
| Nainesh Gandhi | 1,228 | $83K |
| John Flores | N/A | N/A |
| Joseph Kanaan | N/A | N/A |
| Chirag Gandhi | N/A | N/A |
| Andrea Sircable | N/A | N/A |
| Karisa Jahn | N/A | N/A |
| Chang Cho | N/A | N/A |
Specialties in Fontana
Family Practice
5 providers
Pharmacist
2 providers
Internal Medicine
1 provider
Cardiology
1 provider
Geriatric Medicine
1 provider
Dermatology
1 provider
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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.