Medicare Part D Prescribers in Guaynabo, Puerto Rico

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

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

Share:

9

Providers

$7.6M

Total Drug Cost

0

High Risk

2.2%

Avg Opioid Rate

Top Prescribers by Drug Cost

ProviderClaimsDrug Cost
Denis Ruiz-Serrano26,456$2.0M
Marta Diaz Nater22,544$1.8M
Milciades Mercedes Maldonado18,242$1.1M
Carlos Bujosa11,798$915K
Francisco Pla Mendez25,874$841K
Jose Caldera Nieves9,929$505K
Nestor Perezcardona9,186$394K
Joyce Castro Gonzalez647$10K
Diego Gallardo1,052$7,225

Specialties in Guaynabo

Internal Medicine

3 providers

General Practice

2 providers

Cardiology

1 provider

Family Practice

1 provider

Physical Medicine and Rehabilitation

1 provider

Oral Surgery (Dentist only)

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.