DAVID MANFOOK CHAN M.D.
Prescription History 1982944005
Internal Medicine in Loma Linda, CA
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DAVID MANFOOK CHAN M.D., an active Internal Medicine specialist practicing in Loma Linda, CA. Our medical registry currently tracks 2 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 22 documented patient claims. Among these therapy options, the most frequently utilized medication is Losartan Potassium, which accounts for 11 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.
| Medication | Prescriptions (2023)Rx (2023) | Avg Cost per FillCost / Fill | Vs. Other CA PrescribersVs. CA Avg |
|---|---|---|---|
| Losartan Potassium | 11 | $9.14▼ below CA 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 9% of the volume of the typical California prescriber of this medication (116). Medicare paid an average of $9.14 per fill, versus $13.35 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 11 30-Day Fills standardized to 30-day supplies 330 Days of Medication total across all patients in 2023 | |||
| Metformin Hcl ErMetformin Hcl | 11 | $4.70▼ below CA avg | ▼ Less than typical |
About Metformin Hcl Er: Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar. Show more ▾ It is used in patients with type 2 diabetes. Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. Proper control of diabetes may also lessen your risk of a heart attack or stroke. Metformin works by helping to restore your body's proper response to the insulin you naturally produce. It also decreases the amount of sugar that your liver makes and that your stomach/intestines absorb. A biguanide hypoglycemic agent used in the treatment of non-insulin-dependent diabetes mellitus not responding to dietary modification. Metformin improves glycemic control by improving insulin sensitivity and decreasing intestinal absorption of glucose. (From Martindale, The Extra Pharmacopoeia, 30th ed, p289) In 2023, this provider wrote 11 Medicare prescriptions for Metformin Hcl Er, about a quarter of the volume of the typical California prescriber of this medication (48). Medicare paid an average of $4.70 per fill, versus $11.67 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 11 30-Day Fills standardized to 30-day supplies 330 Days of Medication total across all patients in 2023 | |||
About this data. The prescription history for DAVID MANFOOK CHAN 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 Internal Medicine prescribing approach at this Loma Linda, CA 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 CA prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.
