Medicare Fraud Risk in California
618 of 139,057 Medicare Part D prescribers in California (0.44%) were flagged as high-risk by our multi-factor scoring model.
Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026
618
High-Risk Providers
$484.1M
Flagged Provider Costs
0.44%
Of Providers Flagged
13.6%
State Avg Opioid Rate
Highest-Risk Prescribers in California
Risk scores are statistical indicators, not allegations of wrongdoing. Learn about our methodology.
| Provider | Risk Score | Drug Cost |
|---|---|---|
| Kamyar Cohanshohet | 77/100 | $75K |
| Henry Watson | 61/100 | $868K |
| Daniel Lee | 57/100 | $7.8M |
| Julie Mallory | 55/100 | $400K |
| Melanie Willis | 53/100 | $279K |
| Shelby Lombardi | 51/100 | $1.3M |
| Meaghan Berglund | 51/100 | $688K |
| Amy Nguyen | 51/100 | $195K |
| Jennifer Nelsen | 50/100 | $343K |
| Evan Collier | 50/100 | $364K |
| Adam Lee | 50/100 | $246K |
| Laurel Coppage | 50/100 | $72K |
| Dana Culp | 50/100 | $470K |
| Tracey Fremd | 50/100 | $248K |
| Sandra Soriano | 49/100 | $229K |
By Specialty
Nurse Practitioner7
Internal Medicine2
Family Practice2
Physician Assistant2
Infectious Disease1
Pharmacist1
By City
Visalia2
Beverly Hills1
Oakland1
San Diego1
Modesto1
Ridgecrest1
Rocklin1
Fullerton1
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Data from CMS Medicare Part D Prescriber Public Use File, 2023. Risk scores are computed using our 10-component statistical model analyzing prescribing patterns relative to specialty peers. High risk scores indicate unusual patterns that may warrant review — they are not accusations of fraud. Dispute this data