CHRISTOPHER VAN NGUYEN M.D.
Prescription History 1003825035
Internal Medicine - Interventional Cardiology in Shenandoah, TX
What does Dr. Nguyen prescribe?
In 2024, Dr. Nguyen wrote 5,789 Medicare prescriptions for 52 medications. The most prescribed was Metoprolol Succinate, with 743 prescriptions for 276 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 52 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 Texas prescribers.
What it is used for
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 743 prescriptions for Metoprolol Succinate, about 7.4 times as often as the typical Texas prescriber of it (101). Medicare paid $13.82 per fill, versus $14.00 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 Texas prescribers
Dr. Nguyen wrote 540 prescriptions for Furosemide, about 7 times as often as the typical Texas prescriber of it (78). Medicare paid $3.36 per fill, versus $5.09 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 Texas prescribers
Dr. Nguyen wrote 450 prescriptions for Atorvastatin Calcium, about 2.5 times as often as the typical Texas prescriber of it (180). Medicare paid $10.44 per fill, versus $9.48 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
Rosuvastatin 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 Texas prescribers
Dr. Nguyen wrote 339 prescriptions for Rosuvastatin Calcium, about 2.8 times as often as the typical Texas prescriber of it (122). Medicare paid $10.91 per fill, versus $13.19 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
Carvedilol is used to treat high blood pressure and heart failure.
Compared with Texas prescribers
Dr. Nguyen wrote 291 prescriptions for Carvedilol, about 4.1 times as often as the typical Texas prescriber of it (71). Medicare paid $8.98 per fill, versus $8.22 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
Clopidogrel is used to prevent heart attacks and strokes in persons with heart disease (recent heart attack), recent stroke, or blood circulation disease (peripheral vascular disease).
Compared with Texas prescribers
Dr. Nguyen wrote 280 prescriptions for Clopidogrel, about 4.3 times as often as the typical Texas prescriber of it (64). Medicare paid $12.27 per fill, versus $11.09 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
Rivaroxaban is used to prevent blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip or knee replacement surgery.
Compared with Texas prescribers
Dr. Nguyen wrote 272 prescriptions for Xarelto, about 6 times as often as the typical Texas prescriber of it (45). Medicare paid $1,246.12 per fill, versus $943.32 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 268 prescriptions for Amlodipine Besylate, about 2 times as often as the typical Texas prescriber of it (133). Medicare paid $6.33 per fill, versus $6.07 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
Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery.
Compared with Texas prescribers
Dr. Nguyen wrote 247 prescriptions for Eliquis, about 3 times as often as the typical Texas prescriber of it (81). Medicare paid $1,272.19 per fill, versus $870.72 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
Valsartan is used to treat high blood pressure and heart failure.
Compared with Texas prescribers
Dr. Nguyen wrote 203 prescriptions for Valsartan, about 5.5 times as often as the typical Texas prescriber of it (37). Medicare paid $37.97 per fill, versus $26.07 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 mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with Texas prescribers
Dr. Nguyen wrote 202 prescriptions for Potassium Chloride, about 3.3 times as often as the typical Texas prescriber of it (62). Medicare paid $16.93 per fill, versus $19.18 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 Texas prescribers
Dr. Nguyen wrote 177 prescriptions for Losartan Potassium, about 1.6 times as often as the typical Texas prescriber of it (111). Medicare paid $11.02 per fill, versus $9.74 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 Texas prescribers
Dr. Nguyen wrote 168 prescriptions for Lisinopril, about 1.6 times as often as the typical Texas prescriber of it (108). Medicare paid $5.34 per fill, versus $7.09 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 to treat certain types of serious (possibly fatal) irregular heartbeat (such as sustained ventricular tachycardia and paroxysmal supraventricular tachycardia).
Compared with Texas prescribers
Dr. Nguyen wrote 148 prescriptions for Flecainide Acetate, about 2.8 times as often as the typical Texas prescriber of it (52). Medicare paid $38.63 per fill, versus $37.86 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
Nifedipine is used alone or in combination with other drugs to treat high blood pressure (hypertension).
Compared with Texas prescribers
Dr. Nguyen wrote 116 prescriptions for Nifedipine Er, about 3 times as often as the typical Texas prescriber of it (39). Medicare paid $40.83 per fill, versus $25.74 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
Isosorbide mononitrate is used to prevent chest pain (angina) in patients with a certain heart condition (coronary artery disease).
Compared with Texas prescribers
Dr. Nguyen wrote 101 prescriptions for Isosorbide Mononitrate Er, about 2.4 times as often as the typical Texas prescriber of it (43). Medicare paid $15.14 per fill, versus $11.85 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 used to treat high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 98 prescriptions for Hydrochlorothiazide, about 1.5 times as often as the typical Texas prescriber of it (65). Medicare paid $4.07 per fill, versus $4.50 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 product is used to treat certain types of heart failure.
Compared with Texas prescribers
Dr. Nguyen wrote 79 prescriptions for Entresto, about 1.5 times as often as the typical Texas prescriber of it (53). Medicare paid $1,629.84 per fill, versus $1,062.82 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
Digoxin is used to treat heart failure, usually along with other medications.
Compared with Texas prescribers
Dr. Nguyen wrote 73 prescriptions for Digoxin, about 2.4 times as often as the typical Texas prescriber of it (31). Medicare paid $26.03 per fill, versus $22.47 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Texas prescribers
Dr. Nguyen wrote 70 prescriptions for Metoprolol Tartrate, about 1.2 times as often as the typical Texas prescriber of it (59). Medicare paid $5.02 per fill, versus $6.73 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
Diazepam is used to treat anxiety, alcohol withdrawal, and seizures.
Compared with Texas prescribers
Dr. Nguyen wrote 63 prescriptions for Diazepam, about 2.3 times as often as the typical Texas prescriber of it (27). Medicare paid $1.02 per fill, versus $6.54 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 drug is used to treat high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 55 prescriptions for Valsartan-Hydrochlorothiazide, about 2.1 times as often as the typical Texas prescriber of it (26). Medicare paid $16.65 per fill, versus $31.58 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
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with Texas prescribers
Dr. Nguyen wrote 50 prescriptions for Ezetimibe, about as often as the typical Texas prescriber of it (53). Medicare paid $24.10 per fill, versus $23.89 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
Icosapent ethyl is used along with certain other cholesterol medications ("statins" such as atorvastatin, simvastatin) to reduce the risk of heart attack, stroke, and certain types of heart problems that require treatment in a hospital.
Compared with Texas prescribers
Dr. Nguyen wrote 44 prescriptions for Icosapent Ethyl, about 1.9 times as often as the typical Texas prescriber of it (23). Medicare paid $541.99 per fill, versus $295.28 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 Texas prescribers
Dr. Nguyen wrote 42 prescriptions for Bumetanide, about 1.4 times as often as the typical Texas prescriber of it (29). Medicare paid $32.08 per fill, versus $33.57 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 Texas prescribers
Dr. Nguyen wrote 42 prescriptions for Spironolactone, about as often as the typical Texas prescriber of it (44). Medicare paid $8.88 per fill, versus $9.03 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
Icosapent ethyl is used along with certain other cholesterol medications ("statins" such as atorvastatin, simvastatin) to reduce the risk of heart attack, stroke, and certain types of heart problems that require treatment in a hospital.
Compared with Texas prescribers
Dr. Nguyen wrote 42 prescriptions for Vascepa, about 1.3 times as often as the typical Texas prescriber of it (33). Medicare paid $746.78 per fill, versus $615.67 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
Evolocumab is used along with a proper diet to help lower "bad" cholesterol (LDL) in the blood.
Compared with Texas prescribers
Dr. Nguyen wrote 39 prescriptions for Repatha Sureclick, about 87% as often as the typical Texas prescriber of it (45). Medicare paid $1,150.79 per fill, versus $872.18 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 to treat certain types of serious (possibly fatal) irregular heartbeat (such as recurrent ventricular fibrillation/tachycardia).
Compared with Texas prescribers
Dr. Nguyen wrote 37 prescriptions for Amiodarone Hcl, about 82% as often as the typical Texas prescriber of it (45). Medicare paid $17.62 per fill, versus $23.63 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
Olmesartan is used to treat high blood pressure (hypertension).
Compared with Texas prescribers
Dr. Nguyen wrote 37 prescriptions for Olmesartan Medoxomil, about 86% as often as the typical Texas prescriber of it (43). Medicare paid $9.61 per fill, versus $18.82 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
Diltiazem is used to treat high blood pressure (hypertension) and prevent chest pain (angina).
Compared with Texas prescribers
Dr. Nguyen wrote 35 prescriptions for Diltiazem 24hr Er (Cd), about 1.2 times as often as the typical Texas prescriber of it (29). Medicare paid $26.20 per fill, versus $27.10 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
Nebivolol is used to treat high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 34 prescriptions for Nebivolol Hcl, about as often as the typical Texas prescriber of it (30). Medicare paid $59.29 per fill, versus $54.40 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
Simvastatin 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 Texas prescribers
Dr. Nguyen wrote 34 prescriptions for Simvastatin, about half as often as the typical Texas prescriber of it (62). Medicare paid $9.34 per fill, versus $8.39 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
This medication is used to treat high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 32 prescriptions for Lisinopril-Hydrochlorothiazide, about 84% as often as the typical Texas prescriber of it (38). Medicare paid $4.76 per fill, versus $7.96 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
This drug is used to treat high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 27 prescriptions for Losartan-Hydrochlorothiazide, about 71% as often as the typical Texas prescriber of it (38). Medicare paid $16.44 per fill, versus $14.03 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 for certain patients who have symptoms of low blood pressure when standing.
Compared with Texas prescribers
Dr. Nguyen wrote 26 prescriptions for Midodrine Hcl, about as often as the typical Texas prescriber of it (26). Medicare paid $92.41 per fill, versus $64.86 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
Pravastatin 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 Texas prescribers
Dr. Nguyen wrote 26 prescriptions for Pravastatin Sodium, about half as often as the typical Texas prescriber of it (52). Medicare paid $18.06 per fill, versus $13.28 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
Irbesartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with Texas prescribers
Dr. Nguyen wrote 24 prescriptions for Irbesartan, about 80% as often as the typical Texas prescriber of it (30). Medicare paid $30.41 per fill, versus $17.53 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 beta blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions as determined by your doctor.
Compared with Texas prescribers
Dr. Nguyen wrote 23 prescriptions for Propranolol Hcl Er, about as often as the typical Texas prescriber of it (21). Medicare paid $47.07 per fill, versus $38.97 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 Texas prescribers
Dr. Nguyen wrote 22 prescriptions for Atenolol, about 71% as often as the typical Texas prescriber of it (31). Medicare paid $10.61 per fill, versus $7.49 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
Ranolazine is used to treat a certain type of chest pain (chronic angina).
Compared with Texas prescribers
Dr. Nguyen wrote 22 prescriptions for Ranolazine Er, about half as often as the typical Texas prescriber of it (40). Medicare paid $57.23 per fill, versus $94.91 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 beta blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions.
Compared with Texas prescribers
Dr. Nguyen wrote 20 prescriptions for Propranolol Hcl, about 82% as often as the typical Texas prescriber of it (24). Medicare paid $12.48 per fill, versus $15.40 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 to treat a serious (possibly life-threatening) type of fast heartbeat called sustained ventricular tachycardia.
Compared with Texas prescribers
Dr. Nguyen wrote 18 prescriptions for Sotalol, about half as often as the typical Texas prescriber of it (42). Medicare paid $32.28 per fill, versus $20.27 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
Verapamil is used to treat high blood pressure.
Compared with Texas prescribers
Dr. Nguyen wrote 18 prescriptions for Verapamil Er, about as often as the typical Texas prescriber of it (20). Medicare paid $13.13 per fill, versus $28.42 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
This medication is used to relieve chest pain (angina) in people that have a certain heart condition (coronary artery disease).
Compared with Texas prescribers
Dr. Nguyen wrote 17 prescriptions for Nitroglycerin, about half as often as the typical Texas prescriber of it (34). Medicare paid $5.33 per fill, versus $14.32 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
Metolazone is a "water pill" (diuretic) that increases the amount of urine you make, which causes your body to get rid of excess water.
Compared with Texas prescribers
Dr. Nguyen wrote 15 prescriptions for Metolazone, about 66% as often as the typical Texas prescriber of it (23). Medicare paid $19.93 per fill, versus $21.89 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 Texas prescribers
Dr. Nguyen wrote 15 prescriptions for Torsemide, about 42% as often as the typical Texas prescriber of it (36). Medicare paid $7.62 per fill, versus $19.52 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
Fludrocortisone is a man-made form of a natural substance (glucocorticoid) made by the body.
Compared with Texas prescribers
Dr. Nguyen wrote 14 prescriptions for Fludrocortisone Acetate, about 70% as often as the typical Texas prescriber of it (20). Medicare paid $35.48 per fill, versus $23.10 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 dinitrate is used to prevent chest pain (angina) in patients with a certain heart condition (coronary artery disease).
Compared with Texas prescribers
Dr. Nguyen wrote 14 prescriptions for Isosorbide Dinitrate, about half as often as the typical Texas prescriber of it (24). Medicare paid $27.01 per fill, versus $43.98 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
Ramipril is used to treat high blood pressure (hypertension).
Compared with Texas prescribers
Dr. Nguyen wrote 13 prescriptions for Ramipril, about half as often as the typical Texas prescriber of it (24). Medicare paid $18.12 per fill, versus $11.17 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 mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with Texas prescribers
Dr. Nguyen wrote 12 prescriptions for Klor-Con 10, about 71% as often as the typical Texas prescriber of it (17). Medicare paid $12.73 per fill, versus $18.91 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 drug is used to treat high blood pressure (hypertension).
Compared with Texas prescribers
Dr. Nguyen wrote 12 prescriptions for Olmesartan-Hydrochlorothiazide, about 42% as often as the typical Texas prescriber of it (29). Medicare paid $23.01 per fill, versus $32.73 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 Metoprolol Succinate (743), Furosemide (540) and Atorvastatin Calcium (450).
How does Dr. Nguyen's prescribing compare with other Texas prescribers?
Of the 52 medications with a state comparison, Dr. Nguyen prescribes 24 more often than the typical Texas prescriber, 14 about as often and 14 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 Texas 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.
