Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. KENNETH WILLARD BREWSTER III M.D.
Prescription History 1508809708
General Practice in Caguas, PR

Active since June 14, 2006PECOS Enrolled
PLAZA DEL CARMEN MALL # 24 CARR 172, CAGUAS, PR 00725(787) 286-6060 Get Directions

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. KENNETH WILLARD BREWSTER III M.D., an active General Practice specialist practicing in Caguas, PR. Our medical registry currently tracks 2 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 26 documented patient claims. Among these therapy options, the most frequently utilized medication is Atorvastatin Calcium, which accounts for 15 claims alone. Use the table below to sort by claims, cost, or utilization compared with the state average; select any medication for its full profile.

2
Medications
26
Total Claims
38
30-Day Fills
Atorvastatin Calcium
Most Prescribed · 15 claims
View details
2 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. KENNETH WILLARD BREWSTER III M.D. in 2023, with prescription volumes, average cost per fill, and PR state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other PR PrescribersVs. PR Avg
Atorvastatin Calcium15$7.35▼ below PR avg Less than typical

About Atorvastatin Calcium: Atorvastatin is used along with a proper diet to help lower bad cholesterol and fats (such as LDL, triglycerides) and raise good cholesterol (HDL) in the blood. Show more ▾

It belongs to a group of drugs known as statins. It works by reducing the amount of cholesterol made by the liver. Lowering bad cholesterol and triglycerides and raising good cholesterol decreases the risk of heart disease and helps prevent strokes and heart attacks. In addition to eating a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. A pyrrole and heptanoic acid derivative, HYDROXYMETHYLGLUTARYL-COA REDUCTASE INHIBITOR (statin), and ANTICHOLESTEREMIC AGENT that is used to reduce serum levels of LDL-CHOLESTEROL; APOLIPOPROTEIN B; and TRIGLYCERIDES. It is used to increase serum levels of HDL-CHOLESTEROL in the treatment of HYPERLIPIDEMIAS, and for the prevention of CARDIOVASCULAR DISEASES in patients with multiple risk factors.

In 2023, this provider wrote 15 Medicare prescriptions for Atorvastatin Calcium, about 5% of the volume of the typical Puerto Rico prescriber of this medication (321). Medicare paid an average of $7.35 per fill, versus $11.89 statewide.

How often this provider prescribes it

This provider
15
PR average
321.0

This provider prescribes this medication less often than the average PR prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$7.35
PR average
$11.89

This provider's average cost per fill is below the PR average for this medication.

21
30-Day Fills
standardized to 30-day supplies
630
Days of Medication
total across all patients in 2023
Losartan Potassium11$13.25▼ below PR avg Less than typical

About Losartan Potassium: Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes. Show more ▾

It is also used to lower the risk of strokes in patients with high blood pressure and an enlarged heart. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Losartan belongs to a class of drugs called angiotensin receptor blockers (ARBs). It works by relaxing blood vessels so that blood can flow more easily. An antagonist of ANGIOTENSIN TYPE 1 RECEPTOR with antihypertensive activity due to the reduced pressor effect of ANGIOTENSIN II.

In 2023, this provider wrote 11 Medicare prescriptions for Losartan Potassium, about 5% of the volume of the typical Puerto Rico prescriber of this medication (241). Medicare paid an average of $13.25 per fill, versus $17.23 statewide.

How often this provider prescribes it

This provider
11
PR average
241.0

This provider prescribes this medication less often than the average PR prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$13.25
PR average
$17.23

This provider's average cost per fill is below the PR average for this medication.

17
30-Day Fills
standardized to 30-day supplies
510
Days of Medication
total across all patients in 2023
No medications match the current filters.
More than typical Typical Less than typical= prescription volume vs the average PR prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the PR average cost per fill.

About this data. The prescription history for DR. KENNETH WILLARD BREWSTER III M.D. is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2023, the most recent federal release. Figures cover prescriptions filled for Medicare Part D beneficiaries only; prescriptions under private insurance, Medicaid, or self-pay plans are not included. Because prescribing decisions are generally consistent across coverage types, this record offers a useful view of the overall General Practice prescribing approach at this Caguas, PR practice.

Reading the costs. Drug costs are gross amounts paid to pharmacies under Part D, including both plan and beneficiary payments. They are not the price a patient pays at the pharmacy counter. Medications with fewer than 11 claims are excluded from the federal source data, and state comparisons use the average volume among PR prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.