MR. SONNY TRUONG NGUYEN MD
Prescription History 1588198204
Internal Medicine - Nephrology in Oakland, CA
What does Dr. Nguyen prescribe?
In 2024, Dr. Nguyen wrote 976 Medicare prescriptions for 31 medications. The most prescribed was Amlodipine Besylate, with 114 prescriptions for 41 patients.
Medicare Part D only. These are prescriptions filled by people with Medicare drug coverage in 2024, from the CMS data released in 2026, the most recent year available. CMS does not publish medications with fewer than 11 prescriptions, so this is not a full list of what Dr. Nguyen prescribes.
Medications 31 medications
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other California prescribers.
What it is used for
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Nguyen wrote 114 prescriptions for Amlodipine Besylate, about 81% as often as the typical California prescriber of it (141). Medicare paid $11.69 per fill, versus $7.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with California prescribers
Dr. Nguyen wrote 82 prescriptions for Losartan Potassium, about 68% as often as the typical California prescriber of it (121). Medicare paid $12.97 per fill, versus $10.35 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with California prescribers
Dr. Nguyen wrote 79 prescriptions for Furosemide, about 1.2 times as often as the typical California prescriber of it (64). Medicare paid $14.76 per fill, versus $6.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Hydralazine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Nguyen wrote 77 prescriptions for Hydralazine Hcl, about 1.8 times as often as the typical California prescriber of it (43). Medicare paid $18.09 per fill, versus $14.35 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Isosorbide mononitrate is used to prevent chest pain (angina) in patients with a certain heart condition (coronary artery disease).
Compared with California prescribers
Dr. Nguyen wrote 44 prescriptions for Isosorbide Mononitrate Er, about 1.3 times as often as the typical California prescriber of it (35). Medicare paid $27.54 per fill, versus $14.01 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Sevelamer is used to lower high blood phosphorus (phosphate) levels in patients who are on dialysis due to severe kidney disease.
Compared with California prescribers
Dr. Nguyen wrote 41 prescriptions for Sevelamer Carbonate, about 83% as often as the typical California prescriber of it (49). Medicare paid $237.90 per fill, versus $246.42 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Dr. Nguyen wrote 38 prescriptions for Gabapentin, about half as often as the typical California prescriber of it (80). Medicare paid $10.93 per fill, versus $15.63 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Calcitriol is a man-made active form of vitamin D.
Compared with California prescribers
Dr. Nguyen wrote 37 prescriptions for Calcitriol, about 74% as often as the typical California prescriber of it (50). Medicare paid $28.11 per fill, versus $19.76 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Empagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Nguyen wrote 31 prescriptions for Jardiance, about half as often as the typical California prescriber of it (58). Medicare paid $557.17 per fill, versus $933.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Torsemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with California prescribers
Dr. Nguyen wrote 30 prescriptions for Torsemide, about as often as the typical California prescriber of it (30). Medicare paid $23.52 per fill, versus $18.74 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Lisinopril is used to treat high blood pressure.
Compared with California prescribers
Dr. Nguyen wrote 28 prescriptions for Lisinopril, about 29% as often as the typical California prescriber of it (98). Medicare paid $12.15 per fill, versus $8.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Nguyen wrote 28 prescriptions for Metoprolol Tartrate, about half as often as the typical California prescriber of it (57). Medicare paid $10.78 per fill, versus $7.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Prazosin is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Nguyen wrote 28 prescriptions for Prazosin Hcl, about as often as the typical California prescriber of it (26). Medicare paid $60.31 per fill, versus $19.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Calcium acetate is used to prevent high blood phosphate levels in patients who are on dialysis due to severe kidney disease.
Compared with California prescribers
Dr. Nguyen wrote 24 prescriptions for Calcium Acetate, about 63% as often as the typical California prescriber of it (38). Medicare paid $107.12 per fill, versus $84.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with California prescribers
Dr. Nguyen wrote 23 prescriptions for Allopurinol, about half as often as the typical California prescriber of it (44). Medicare paid $91.02 per fill, versus $10.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Nguyen wrote 23 prescriptions for Glipizide, about half as often as the typical California prescriber of it (49). Medicare paid $10.37 per fill, versus $10.86 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Terazosin is used alone or with other drugs to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Nguyen wrote 22 prescriptions for Terazosin Hcl, about 61% as often as the typical California prescriber of it (36). Medicare paid $47.70 per fill, versus $37.76 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Chlorthalidone is used to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Nguyen wrote 21 prescriptions for Chlorthalidone, about 81% as often as the typical California prescriber of it (26). Medicare paid $11.31 per fill, versus $15.58 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with California prescribers
Dr. Nguyen wrote 21 prescriptions for Tamsulosin Hcl, about 25% as often as the typical California prescriber of it (84). Medicare paid $15.58 per fill, versus $15.02 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with California prescribers
Dr. Nguyen wrote 21 prescriptions for Tramadol Hcl, about half as often as the typical California prescriber of it (44). Medicare paid $6.90 per fill, versus $6.24 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Bumetanide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with California prescribers
Dr. Nguyen wrote 20 prescriptions for Bumetanide, about 68% as often as the typical California prescriber of it (29). Medicare paid $71.55 per fill, versus $38.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Nguyen wrote 18 prescriptions for Atenolol, about 36% as often as the typical California prescriber of it (50). Medicare paid $14.12 per fill, versus $9.20 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication contains 2 amide-type local anesthetics, lidocaine and prilocaine.
Compared with California prescribers
Dr. Nguyen wrote 16 prescriptions for Lidocaine-Prilocaine, about 65% as often as the typical California prescriber of it (25). Medicare paid $24.99 per fill, versus $20.14 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Nguyen wrote 16 prescriptions for Ozempic, about 28% as often as the typical California prescriber of it (56). Medicare paid $739.56 per fill, versus $1,102.15 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Carvedilol is used to treat high blood pressure and heart failure.
Compared with California prescribers
Dr. Nguyen wrote 15 prescriptions for Carvedilol, about 27% as often as the typical California prescriber of it (56). Medicare paid $11.75 per fill, versus $8.98 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Cinacalcet is used to treat increased amounts of a certain hormone (parathyroid) in people with long-term kidney disease who are on dialysis.
Compared with California prescribers
Dr. Nguyen wrote 15 prescriptions for Cinacalcet Hcl, about half as often as the typical California prescriber of it (27). Medicare paid $27.02 per fill, versus $291.15 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Hydroxyzine is used to treat itching caused by allergies.
Compared with California prescribers
Dr. Nguyen wrote 14 prescriptions for Hydroxyzine Hcl, about half as often as the typical California prescriber of it (28). Medicare paid $7.52 per fill, versus $13.85 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a laxative used to treat constipation.
Compared with California prescribers
Dr. Nguyen wrote 14 prescriptions for Lactulose, about half as often as the typical California prescriber of it (29). Medicare paid $21.02 per fill, versus $52.96 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
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.
Compared with California prescribers
Dr. Nguyen wrote 13 prescriptions for Atorvastatin Calcium, about 6% as often as the typical California prescriber of it (202). Medicare paid $13.67 per fill, versus $10.47 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used alone or with other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Nguyen wrote 12 prescriptions for Clonidine Hcl, about 34% as often as the typical California prescriber of it (35). Medicare paid $10.50 per fill, versus $6.25 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Spironolactone is used to treat high blood pressure and heart failure.
Compared with California prescribers
Dr. Nguyen wrote 11 prescriptions for Spironolactone, about 29% as often as the typical California prescriber of it (37). Medicare paid $14.76 per fill, versus $10.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Dr. Nguyen’s prescriptions
What does Dr. Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed medications were Amlodipine Besylate (114), Losartan Potassium (82) and Furosemide (79).
How does Dr. Nguyen's prescribing compare with other California prescribers?
Of the 31 medications with a state comparison, Dr. Nguyen prescribes 2 more often than the typical California prescriber, 6 about as often and 23 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Nguyen prescribes?
No. It covers prescriptions filled by people with Medicare Part D drug coverage in 2024, and CMS leaves out any medication with fewer than 11 prescriptions.
About this data
This page shows one provider’s slice of public Medicare files. NPI Profile does not receive prescriptions or patient records.
| Source | What it provides here | Data year |
|---|---|---|
| CMS Medicare Part D Prescribers by Provider and Drug | Each medication, prescriptions, patients, 30-day fills, days of medication and cost. State comparisons average the California prescribers of the same medication and form, where at least five wrote it. | 2024 (released 2026, the most recent available) |
| CMS Medicare Part D Drug Spending Dashboard | What each medication is used for. | 2024 |
- Only prescriptions filled by people with Medicare Part D drug coverage are counted. Private insurance, Medicaid and cash purchases are not.
- CMS leaves out medications with fewer than 11 prescriptions and hides patient counts under 11.
- Cost per fill is what the plan and the patient paid the pharmacy together, not what you pay at the counter.
- Medication descriptions are summaries from CMS. They are not medical advice; ask a health care professional about any medication.
