MARK ANTHONY CASTRO CABRERA M.D.
Prescription History 1659524924
Internal Medicine - Nephrology in Spokane, WA
What does Dr. Cabrera prescribe?
In 2024, Dr. Cabrera wrote 2,357 Medicare prescriptions for 49 medications. The most prescribed was Losartan Potassium, with 197 prescriptions for 70 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. Cabrera prescribes.
Medications 49 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 Washington prescribers.
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 Washington prescribers
Dr. Cabrera wrote 197 prescriptions for Losartan Potassium, about 1.9 times as often as the typical Washington prescriber of it (102). Medicare paid $12.05 per fill, versus $10.71 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 Washington prescribers
Dr. Cabrera wrote 190 prescriptions for Torsemide, about 5 times as often as the typical Washington prescriber of it (38). Medicare paid $30.80 per fill, versus $21.27 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Washington prescribers
Dr. Cabrera wrote 182 prescriptions for Amlodipine Besylate, about 1.7 times as often as the typical Washington prescriber of it (106). Medicare paid $13.11 per fill, versus $7.92 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 Washington prescribers
Dr. Cabrera wrote 179 prescriptions for Carvedilol, about 3.8 times as often as the typical Washington prescriber of it (48). Medicare paid $12.13 per fill, versus $10.02 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
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 Washington prescribers
Dr. Cabrera wrote 149 prescriptions for Furosemide, about 2.5 times as often as the typical Washington prescriber of it (59). Medicare paid $12.31 per fill, versus $6.29 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 Washington prescribers
Dr. Cabrera wrote 132 prescriptions for Jardiance, about 3 times as often as the typical Washington prescriber of it (44). Medicare paid $456.75 per fill, versus $1,041.39 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 a mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with Washington prescribers
Dr. Cabrera wrote 102 prescriptions for Potassium Chloride, about 2 times as often as the typical Washington prescriber of it (50). Medicare paid $48.05 per fill, versus $21.39 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 Washington prescribers
Dr. Cabrera wrote 88 prescriptions for Hydralazine Hcl, about 2.9 times as often as the typical Washington prescriber of it (30). Medicare paid $21.98 per fill, versus $15.61 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 Washington prescribers
Dr. Cabrera wrote 73 prescriptions for Chlorthalidone, about 2.9 times as often as the typical Washington prescriber of it (25). Medicare paid $7.80 per fill, versus $17.83 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 Washington prescribers
Dr. Cabrera wrote 70 prescriptions for Lisinopril, about 67% as often as the typical Washington prescriber of it (105). Medicare paid $12.90 per fill, versus $8.60 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 Washington prescribers
Dr. Cabrera wrote 60 prescriptions for Allopurinol, about 1.5 times as often as the typical Washington prescriber of it (39). Medicare paid $10.90 per fill, versus $11.44 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 Washington prescribers
Dr. Cabrera wrote 56 prescriptions for Atorvastatin Calcium, about 34% as often as the typical Washington prescriber of it (166). Medicare paid $10.89 per fill, versus $11.43 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 Washington prescribers
Dr. Cabrera wrote 52 prescriptions for Sevelamer Carbonate, about 1.2 times as often as the typical Washington prescriber of it (44). Medicare paid $360.58 per fill, versus $189.31 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 Washington prescribers
Dr. Cabrera wrote 47 prescriptions for Calcium Acetate, about 1.5 times as often as the typical Washington prescriber of it (31). Medicare paid $142.20 per fill, versus $81.90 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 Washington prescribers
Dr. Cabrera wrote 41 prescriptions for Metoprolol Tartrate, about as often as the typical Washington prescriber of it (43). Medicare paid $9.69 per fill, versus $8.03 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
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Washington prescribers
Dr. Cabrera wrote 38 prescriptions for Glipizide, about 1.3 times as often as the typical Washington prescriber of it (30). Medicare paid $11.24 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
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with Washington prescribers
Dr. Cabrera wrote 35 prescriptions for Metoprolol Succinate, about 39% as often as the typical Washington prescriber of it (91). Medicare paid $12.47 per fill, versus $14.75 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 Washington prescribers
Dr. Cabrera wrote 32 prescriptions for Nifedipine Er, about 1.6 times as often as the typical Washington prescriber of it (20). Medicare paid $41.44 per fill, versus $25.33 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 Washington prescribers
Dr. Cabrera wrote 31 prescriptions for Spironolactone, about 75% as often as the typical Washington prescriber of it (41). Medicare paid $12.01 per fill, versus $9.91 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 used to treat a wide variety of bacterial infections.
Compared with Washington prescribers
Dr. Cabrera wrote 30 prescriptions for Cephalexin, about as often as the typical Washington prescriber of it (27). Medicare paid $9.93 per fill, versus $8.96 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
Doxazosin is used alone or with other drugs to treat high blood pressure (hypertension).
Compared with Washington prescribers
Dr. Cabrera wrote 30 prescriptions for Doxazosin Mesylate, about 1.3 times as often as the typical Washington prescriber of it (23). Medicare paid $21.83 per fill, versus $15.98 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
This medication is used to treat high levels of potassium in the blood.
Compared with Washington prescribers
Dr. Cabrera wrote 30 prescriptions for Lokelma, about 1.5 times as often as the typical Washington prescriber of it (20). Medicare paid $958.78 per fill, versus $818.59 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 Washington prescribers
Dr. Cabrera wrote 30 prescriptions for Midodrine Hcl, about 1.3 times as often as the typical Washington prescriber of it (23). Medicare paid $26.54 per fill, versus $59.93 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Washington prescribers
Dr. Cabrera wrote 29 prescriptions for Metformin Hcl, about half as often as the typical Washington prescriber of it (63). Medicare paid $10.11 per fill, versus $9.63 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with Washington prescribers
Dr. Cabrera wrote 28 prescriptions for Gabapentin, about 39% as often as the typical Washington prescriber of it (72). Medicare paid $15.00 per fill, versus $19.65 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 Washington prescribers
Dr. Cabrera wrote 28 prescriptions for Irbesartan, about as often as the typical Washington prescriber of it (29). Medicare paid $25.91 per fill, versus $19.82 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
This medication is used to make the urine less acidic.
Compared with Washington prescribers
Dr. Cabrera wrote 28 prescriptions for Potassium Citrate Er, about 1.2 times as often as the typical Washington prescriber of it (23). Medicare paid $66.01 per fill, versus $96.77 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
Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders.
Compared with Washington prescribers
Dr. Cabrera wrote 26 prescriptions for Prednisone, about 68% as often as the typical Washington prescriber of it (38). Medicare paid $8.78 per fill, versus $5.30 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
This medication is used alone or with other medications to treat high blood pressure (hypertension).
Compared with Washington prescribers
Dr. Cabrera wrote 25 prescriptions for Clonidine Hcl, about as often as the typical Washington prescriber of it (23). Medicare paid $15.17 per fill, versus $7.61 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 anemia (low red blood cell count) in people with long-term serious kidney disease (chronic kidney failure), people receiving zidovudine to treat HIV, and people receiving chemotherapy for some types of cancer (cancer that does
Compared with Washington prescribers
Dr. Cabrera wrote 25 prescriptions for Procrit, about 1.5 times as often as the typical Washington prescriber of it (17). Medicare paid $613.35 per fill, versus $1,061.57 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with Washington prescribers
Dr. Cabrera wrote 21 prescriptions for Pantoprazole Sodium, about half as often as the typical Washington prescriber of it (49). Medicare paid $12.97 per fill, versus $14.19 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
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 Washington prescribers
Dr. Cabrera wrote 21 prescriptions for Pravastatin Sodium, about half as often as the typical Washington prescriber of it (38). Medicare paid $13.58 per fill, versus $14.07 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
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with Washington prescribers
Dr. Cabrera wrote 19 prescriptions for Tamsulosin Hcl, about 27% as often as the typical Washington prescriber of it (70). Medicare paid $15.43 per fill, versus $16.56 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 Washington prescribers
Dr. Cabrera wrote 18 prescriptions for Atenolol, about half as often as the typical Washington prescriber of it (32). Medicare paid $10.97 per fill, versus $8.83 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 prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy.
Compared with Washington prescribers
Dr. Cabrera wrote 18 prescriptions for Ondansetron Odt, about 69% as often as the typical Washington prescriber of it (26). Medicare paid $10.68 per fill, versus $15.16 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 Washington prescribers
Dr. Cabrera wrote 17 prescriptions for Hydrochlorothiazide, about 30% as often as the typical Washington prescriber of it (57). Medicare paid $10.82 per fill, versus $5.34 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Washington prescribers
Dr. Cabrera wrote 16 prescriptions for Levothyroxine Sodium, about 14% as often as the typical Washington prescriber of it (116). Medicare paid $20.08 per fill, versus $11.18 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 depression.
Compared with Washington prescribers
Dr. Cabrera wrote 16 prescriptions for Trazodone Hcl, about 26% as often as the typical Washington prescriber of it (61). Medicare paid $17.13 per fill, versus $10.78 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 prevent or treat gout attacks (flares).
Compared with Washington prescribers
Dr. Cabrera wrote 15 prescriptions for Colchicine, about 72% as often as the typical Washington prescriber of it (21). Medicare paid $15.70 per fill, versus $53.20 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
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 Washington prescribers
Dr. Cabrera wrote 15 prescriptions for Metolazone, about 80% as often as the typical Washington prescriber of it (19). Medicare paid $148.01 per fill, versus $23.28 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
This medication is used alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy.
Compared with Washington prescribers
Dr. Cabrera wrote 15 prescriptions for Ondansetron Hcl, about half as often as the typical Washington prescriber of it (29). Medicare paid $9.71 per fill, versus $11.67 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
Albuterol (also known as salbutamol) is used to prevent and treat wheezing and shortness of breath caused by breathing problems (such as asthma, chronic obstructive pulmonary disease).
Compared with Washington prescribers
Dr. Cabrera wrote 14 prescriptions for Albuterol Sulfate Hfa, about 27% as often as the typical Washington prescriber of it (51). Medicare paid $16.23 per fill, versus $29.37 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 Washington prescribers
Dr. Cabrera wrote 14 prescriptions for Clonidine, about 82% as often as the typical Washington prescriber of it (17). Medicare paid $93.65 per fill, versus $122.24 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
Diltiazem is used to treat high blood pressure (hypertension) and prevent chest pain (angina).
Compared with Washington prescribers
Dr. Cabrera wrote 14 prescriptions for Diltiazem 24hr Er (Cd), about half as often as the typical Washington prescriber of it (27). Medicare paid $31.18 per fill, versus $29.42 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
Insulin isophane is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Washington prescribers
Dr. Cabrera wrote 13 prescriptions for Humulin N, about half as often as the typical Washington prescriber of it (25). Medicare paid $212.77 per fill, versus $166.39 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with Washington prescribers
Dr. Cabrera wrote 13 prescriptions for Insulin Glargine-Yfgn, about half as often as the typical Washington prescriber of it (23). Medicare paid $116.16 per fill, versus $102.88 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 Washington prescribers
Dr. Cabrera wrote 13 prescriptions for Terazosin Hcl, about 60% as often as the typical Washington prescriber of it (22). Medicare paid $57.97 per fill, versus $29.40 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 manic-depressive disorder (bipolar disorder).
Compared with Washington prescribers
Dr. Cabrera wrote 11 prescriptions for Lithium Carbonate, about half as often as the typical Washington prescriber of it (25). Medicare paid $24.32 per fill, versus $9.91 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Washington prescribers
Dr. Cabrera wrote 11 prescriptions for Metformin Hcl Er, about 21% as often as the typical Washington prescriber of it (51). Medicare paid $8.42 per fill, versus $10.77 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. Cabrera’s prescriptions
What does Dr. Cabrera prescribe most?
In 2024 Medicare Part D data, Dr. Cabrera's most prescribed medications were Losartan Potassium (197), Torsemide (190) and Amlodipine Besylate (182).
How does Dr. Cabrera's prescribing compare with other Washington prescribers?
Of the 49 medications with a state comparison, Dr. Cabrera prescribes 17 more often than the typical Washington prescriber, 9 about as often and 23 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Cabrera 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 Washington 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.
