SAMAN KANNANGARA MD
Prescription History 1508893421
Internal Medicine - Infectious Disease in San Francisco, CA

Active since June 27, 2006PECOS EnrolledAccepts Medicare Assignment
96.5/100
CMS Quality Rating
1199 BUSH ST STE 400, SAN FRANCISCO, CA 94109(415) 379-2980(415) 346-6025 Get Directions

NPPES record last updated: September 29, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2020, Oct 20, 2019, Sep 20, 2016 (3 updates tracked since 2016).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for SAMAN KANNANGARA MD, an active Infectious Disease specialist practicing in San Francisco, CA. Our medical registry currently tracks 2 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 42 documented patient claims. Among these therapy options, the most frequently utilized medication is Biktarvy, which accounts for 30 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
42
Total Claims
42
30-Day Fills
Biktarvy
Most Prescribed · 30 claims
View details
2 medications · 2024 Medicare Part D
Medicare Part D medications prescribed by SAMAN KANNANGARA MD in 2024, with prescription volumes, average cost per fill, and CA state comparisons
Medication Prescriptions (2024)Rx (2024) Avg Cost per FillCost / Fill Vs. Other CA PrescribersVs. CA Avg
BiktarvyBictegrav/Emtricit/Tenofov Ala30$3,903.62▼ below CA avg▼ Less than typical

About Biktarvy: This combination product is used by itself to help control HIV infection. Show more ▾

It helps to decrease the amount of HIV in your body so your immune system can work better. This lowers your chance of getting HIV complications (such as new infections, cancer) and improves your quality of life. This product is a combination of 3 different drugs: bictegravir, emtricitabine, and tenofovir alafenamide. Bictegravir is called an integrase strand transfer inhibitor-INSTI. Emtricitabine is called a nucleoside reverse transcriptase inhibitor, while tenofovir alafenamide is called a nucleotide reverse transcriptase inhibitor. Emtricitabine and tenofovir alafenamide are often called NRTIs. Bictegravir/emtricitabine/tenofovir alafenamide is not a cure for HIV infection. To decrease your risk of spreading HIV disease to others, continue to take all HIV medications exactly as prescribed by your doctor. Use an effective barrier method (latex or polyurethane condoms/dental dams) during sexual activity as directed by your doctor. Do not share personal items (such as needles/syringes, toothbrushes, and razors) that may have contacted blood or other body fluids. Consult your doctor or pharmacist for more details.

In 2024, this provider wrote 30 Medicare prescriptions for Biktarvy, about a third of the volume of the typical California prescriber of this medication (76.7). Medicare paid an average of $3,903.62 per fill, versus $4,498.22 statewide.

How often this provider prescribes it

This provider
30
CA average
76.7

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
$3,903.62
CA average
$4,498.22

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

30
30-Day Fills
standardized to 30-day supplies
900
Days of Medication
total across all patients in 2024
Fosamprenavir Calcium12$894.90▼ below CA avg≈ Typical

About Fosamprenavir Calcium: This drug is used with other HIV medications to help control HIV infection. Show more ▾

It helps to decrease the amount of HIV in your body so your immune system can work better. This lowers your chance of getting HIV complications (such as new infections, cancer) and improves your quality of life. Fosamprenavir belongs to a class of drugs known as protease inhibitors. It may be given with ritonavir, another protease inhibitor, to increase ("boost") the levels of fosamprenavir. This helps fosamprenavir work better. Fosamprenavir is not a cure for HIV infection. To decrease your risk of spreading HIV disease to others, continue to take all HIV medications exactly as prescribed by your doctor. Use an effective barrier method (latex or polyurethane condoms/dental dams) during sexual activity as directed by your doctor. Do not share personal items (such as needles/syringes, toothbrushes, and razors) that may have contacted blood or other body fluids. Consult your doctor or pharmacist for more details. A prodrug of the protease inhibitor amprenavir.

In 2024, this provider wrote 12 Medicare prescriptions for Fosamprenavir Calcium, about the same volume as the typical California prescriber of this medication (13.3). Medicare paid an average of $894.90 per fill, versus $1,044.41 statewide.

How often this provider prescribes it

This provider
12
CA average
13.3

This provider's prescribing volume for this medication is in line with the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$894.90
CA average
$1,044.41

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

12
30-Day Fills
standardized to 30-day supplies
360
Days of Medication
total across all patients in 2024
No medications match the current filters.
▲ More than typical≈ Typical▼ Less than typical= prescription volume vs the average CA prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the CA average cost per fill.

About this data. The prescription history for SAMAN KANNANGARA MD is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2024, 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 Infectious Disease prescribing approach at this San Francisco, 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 among CA prescribers of the same medication and form, shown only when at least five prescribers contribute. Always confirm current medications and costs directly with the provider and your plan.

About the medication summaries. Drug use descriptions come from the CMS Medicare Part D Drug Spending Dashboard (2024), and substance definitions from Medical Subject Headings (MeSH) 2026, U.S. National Library of Medicine. They are summaries that do not contain all possible information about a medication and are not individual medical advice. Ask a health care professional about any medication and your specific health needs.