Medicare Part D Prescribers in Walnut Creek, California

20 flagged and high-volume prescribers across 6 medical specialties.

Data: CMS Medicare Part D, 2023 (most current available) · Updated March 2026

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20

Providers

$24.4M

Total Drug Cost

0

High Risk

5.5%

Avg Opioid Rate

Top Prescribers by Drug Cost

ProviderClaimsDrug Cost
Daisy-Scarlett Maccallum85,003$23.3M
Niceto Lopez9,759$804K
Joseph Henry3,160$256K
Jasleen Sohal1,955$87K
Thomas Cresante319$20K
Brook Woolley164$6,027
Jessica LinnaneN/AN/A
Syed NaqviN/AN/A
Haley KirkpatrickN/AN/A
Jared DomaguingN/AN/A
Joan HartN/AN/A
Angela DankoN/AN/A
Sally KangN/AN/A
Abhindrajeet SandhuN/AN/A
Laura DavisN/AN/A
Timothy TarequeN/AN/A
Karen SpizerN/AN/A
Julia RowlandN/AN/A
Angela MalatestaN/AN/A
Gayle FennerN/AN/A

Specialties in Walnut Creek

Nurse Practitioner

10 providers

Internal Medicine

6 providers

Family Practice

1 provider

Emergency Medicine

1 provider

Dermatology

1 provider

Physician Assistant

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.