SANTIAGO VILLARREAL M.D.
Prescription History 1225035199
Internal Medicine - Nephrology in San Antonio, TX

Active since July 07, 2005PECOS EnrolledAccepts Medicare Assignment
4151 CALLAGHAN RD, SUITE 103, SAN ANTONIO, TX 78228(210) 647-1195(210) 521-9473 Get Directions

NPPES record last updated: October 6, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for SANTIAGO VILLARREAL M.D., an active Nephrology specialist practicing in San Antonio, TX. Our medical registry currently tracks 25 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 704 documented patient claims. Among these therapy options, the most frequently utilized medication is Calcium Acetate, which accounts for 107 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.

25
Medications
704
Total Claims
1,302
30-Day Fills
Calcium Acetate
Most Prescribed · 107 claims
View details
25 medications · 2024 Medicare Part D
Medicare Part D medications prescribed by SANTIAGO VILLARREAL M.D. in 2024, with prescription volumes, average cost per fill, and TX state comparisons
Medication Prescriptions (2024)Rx (2024) Avg Cost per FillCost / Fill Vs. Other TX PrescribersVs. TX Avg

About Calcium Acetate: Calcium acetate is used to prevent high blood phosphate levels in patients who are on dialysis due to severe kidney disease. Show more ▾

Dialysis removes some phosphate from your blood, but it is difficult to remove enough to keep your phosphate levels balanced. Decreasing blood phosphate levels can help keep your bones strong, prevent unsafe buildup of minerals in your body, and possibly decrease the risk of heart disease and strokes that can result from high phosphate levels. Calcium acetate is a natural mineral that works by holding onto phosphate from the diet so that it can pass out of your body. A principal compound used as phosphate binders in patients with chronic renal failure; used like sevelamer.

In 2024, this provider wrote 107 Medicare prescriptions for Calcium Acetate, about 3.8 times the volume of the typical Texas prescriber of this medication (28.4). Medicare paid an average of $80.58 per fill, versus $79.77 statewide.

How often this provider prescribes it

This provider
107
TX average
28.4

This provider prescribes this medication more often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$80.58
TX average
$79.77

Gross Part D cost per fill; not the patient's out-of-pocket price.

134.5
30-Day Fills
standardized to 30-day supplies
3,955
Days of Medication
total across all patients in 2024

About Sevelamer Carbonate: Sevelamer is used to lower high blood phosphorus (phosphate) levels in patients who are on dialysis due to severe kidney disease. Show more ▾

Dialysis removes some phosphate from your blood, but it is difficult to remove enough to keep your phosphate levels balanced. Decreasing blood phosphate levels can help keep your bones strong, prevent unsafe buildup of minerals in your body, and possibly decrease the risk of heart disease and strokes that can result from high phosphate levels. Sevelamer works by holding onto phosphate from the diet so that it can pass out of your body. A polymeric amine that binds phosphate and is used to treat HYPERPHOSPHATEMIA in patients with kidney disease.

In 2024, this provider wrote 62 Medicare prescriptions for Sevelamer Carbonate, about 1.3 times the volume of the typical Texas prescriber of this medication (48.7). Medicare paid an average of $419.23 per fill, versus $230.29 statewide.

How often this provider prescribes it

This provider
62
TX average
48.7

This provider prescribes this medication more often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$419.23
TX average
$230.29

Gross Part D cost per fill; not the patient's out-of-pocket price.

109.3
30-Day Fills
standardized to 30-day supplies
3,245
Days of Medication
total across all patients in 2024

About Furosemide: Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease. Show more ▾

This can lessen symptoms such as shortness of breath and swelling in your arms, legs, and abdomen. This drug is also used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Furosemide is a "water pill" (diuretic) that causes you to make more urine. This helps your body get rid of extra water and salt. A benzoic-sulfonamide-furan. It is a diuretic with fast onset and short duration that is used for EDEMA and chronic RENAL INSUFFICIENCY.

In 2024, this provider wrote 60 Medicare prescriptions for Furosemide, about 77% of the volume of the typical Texas prescriber of this medication (77.5). Medicare paid an average of $5.80 per fill, versus $5.09 statewide.

How often this provider prescribes it

This provider
60
TX average
77.5

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

What Medicare paid per fill

This provider
$5.80
TX average
$5.09

Gross Part D cost per fill; not the patient's out-of-pocket price.

127.1
30-Day Fills
standardized to 30-day supplies
3,813
Days of Medication
total across all patients in 2024

About Lisinopril: Lisinopril is used to treat high blood pressure. Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. It is also used to treat heart failure and to improve survival after a heart attack. Lisinopril belongs to a class of drugs known as ACE inhibitors. It works by relaxing blood vessels so blood can flow more easily. One of the ANGIOTENSIN-CONVERTING ENZYME INHIBITORS (ACE inhibitors), orally active, that has been used in the treatment of hypertension and congestive heart failure.

In 2024, this provider wrote 55 Medicare prescriptions for Lisinopril, about half the volume of the typical Texas prescriber of this medication (107.9). Medicare paid an average of $10.61 per fill, versus $7.09 statewide.

How often this provider prescribes it

This provider
55
TX average
107.9

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$10.61
TX average
$7.09

Gross Part D cost per fill; not the patient's out-of-pocket price.

113
30-Day Fills
standardized to 30-day supplies
3,285
Days of Medication
total across all patients in 2024

About Farxiga: Dapagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes. Show more ▾

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. This medication is also used in people with type 2 diabetes and heart disease to lower the risk of going to the hospital for heart failure. Dapagliflozin works by increasing the removal of sugar by your kidneys. Dapagliflozin is also used to treat kidney disease and heart failure. It helps to lower the risk of death from heart disease and reduces the need of going to a doctor or hospital to treat heart failure. Dapagliflozin works by increasing the removal of sodium by your kidneys.

In 2024, this provider wrote 47 Medicare prescriptions for Farxiga, about the same volume as the typical Texas prescriber of this medication (46). Medicare paid an average of $1,041.80 per fill, versus $985.01 statewide.

How often this provider prescribes it

This provider
47
TX average
46.0

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

What Medicare paid per fill

This provider
$1,041.80
TX average
$985.01

Gross Part D cost per fill; not the patient's out-of-pocket price.

88
30-Day Fills
standardized to 30-day supplies
2,640
Days of Medication
total across all patients in 2024

About Carvedilol: Carvedilol is used to treat high blood pressure and heart failure. Show more ▾

It is also used after a heart attack to improve the chance of survival if your heart is not pumping well. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This drug works by blocking the action of certain natural substances in your body, such as epinephrine, on the heart and blood vessels. This effect lowers your heart rate, blood pressure, and strain on your heart. Carvedilol belongs to a class of drugs known as alpha and beta blockers. A carbazole and propanol derivative that acts as a non-cardioselective beta blocker and vasodilator. It has blocking activity for ALPHA 1 ADRENERGIC RECEPTORS and, at higher doses, may function as a blocker of CALCIUM CHANNELS; it also has antioxidant properties. Carvedilol is used in the treatment of HYPERTENSION; ANGINA PECTORIS; and HEART FAILURE. It can also reduce the risk of death following MYOCARDIAL INFARCTION.

In 2024, this provider wrote 43 Medicare prescriptions for Carvedilol, about 61% of the volume of the typical Texas prescriber of this medication (70.7). Medicare paid an average of $6.30 per fill, versus $8.22 statewide.

How often this provider prescribes it

This provider
43
TX average
70.7

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$6.30
TX average
$8.22

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

93
30-Day Fills
standardized to 30-day supplies
2,790
Days of Medication
total across all patients in 2024

About Amlodipine Besylate: Amlodipine is used with or without other medications to treat high blood pressure. Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Amlodipine belongs to a class of drugs known as calcium channel blockers. It works by relaxing blood vessels so blood can flow more easily. Amlodipine is also used to prevent certain types of chest pain (angina). It may help to increase your ability to exercise and decrease the frequency of angina attacks. It should not be used to treat attacks of chest pain when they occur. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor. A long-acting dihydropyridine calcium channel blocker. It is effective in the treatment of ANGINA PECTORIS and HYPERTENSION.

In 2024, this provider wrote 38 Medicare prescriptions for Amlodipine Besylate, about a third of the volume of the typical Texas prescriber of this medication (132.9). Medicare paid an average of $4.83 per fill, versus $6.07 statewide.

How often this provider prescribes it

This provider
38
TX average
132.9

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$4.83
TX average
$6.07

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

86
30-Day Fills
standardized to 30-day supplies
2,580
Days of Medication
total across all patients in 2024

About Nifedipine Er: Nifedipine is used alone or in combination with other drugs to treat high blood pressure (hypertension). Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication is also used for certain types of chest pain (angina). It may help increase your ability to exercise and decrease the frequency of chest pain attacks. It should not be used to treat chest pain when it occurs. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor. Consult your doctor or pharmacist for more details. This medication is known as a calcium channel blocker. It works by relaxing and widening blood vessels so blood can flow more easily. A potent vasodilator agent with calcium antagonistic action. It is a useful anti-anginal agent that also lowers blood pressure.

In 2024, this provider wrote 24 Medicare prescriptions for Nifedipine Er, about 62% of the volume of the typical Texas prescriber of this medication (38.9). Medicare paid an average of $32.02 per fill, versus $25.74 statewide.

How often this provider prescribes it

This provider
24
TX average
38.9

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$32.02
TX average
$25.74

Gross Part D cost per fill; not the patient's out-of-pocket price.

44
30-Day Fills
standardized to 30-day supplies
1,320
Days of Medication
total across all patients in 2024

About Hydralazine Hcl: Hydralazine is used with or without other medications to treat high blood pressure. Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Hydralazine is called a vasodilator. It works by relaxing blood vessels so blood can flow through the body more easily. A direct-acting vasodilator that is used as an antihypertensive agent.

In 2024, this provider wrote 24 Medicare prescriptions for Hydralazine Hcl, about half the volume of the typical Texas prescriber of this medication (41.8). Medicare paid an average of $7.58 per fill, versus $12.44 statewide.

How often this provider prescribes it

This provider
24
TX average
41.8

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$7.58
TX average
$12.44

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

45.5
30-Day Fills
standardized to 30-day supplies
1,365
Days of Medication
total across all patients in 2024

About Metoclopramide Hcl: This medication is used to treat certain conditions of the stomach and intestines. Show more ▾

Metoclopramide is used as a short-term treatment (4 to 12 weeks) for ongoing heartburn when the usual medicines do not work well enough. It is used mostly for heartburn that occurs after a meal or during the daytime. Treating ongoing heartburn can decrease the damage done by stomach acid to the swallowing tube (esophagus) and help healing. Metoclopramide is also used in diabetic patients who have poor emptying of their stomachs (gastroparesis). Treating gastroparesis can decrease symptoms of nausea, vomiting, and stomach/abdominal fullness. Metoclopramide works by blocking a natural substance (dopamine). It speeds up stomach emptying and movement of the upper intestines. This drug is not recommended for use in children due to an increased risk of serious side effects (such as muscle spasms/uncontrolled muscle movements). Ask the doctor or pharmacist for details. A dopamine D2 antagonist that is used as an antiemetic.

In 2024, this provider wrote 23 Medicare prescriptions for Metoclopramide Hcl, about 85% of the volume of the typical Texas prescriber of this medication (27.1). Medicare paid an average of $2.99 per fill, versus $7.96 statewide.

How often this provider prescribes it

This provider
23
TX average
27.1

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

What Medicare paid per fill

This provider
$2.99
TX average
$7.96

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

28
30-Day Fills
standardized to 30-day supplies
691
Days of Medication
total across all patients in 2024

About Alprazolam: Alprazolam is used to treat anxiety and panic disorders. Show more ▾

It belongs to a class of medications called benzodiazepines which act on the brain and nerves (central nervous system) to produce a calming effect. It works by enhancing the effects of a certain natural chemical in the body (GABA). A triazolobenzodiazepine compound with antianxiety and sedative-hypnotic actions, that is efficacious in the treatment of PANIC DISORDERS, with or without AGORAPHOBIA, and in generalized ANXIETY DISORDERS. (From AMA Drug Evaluations Annual, 1994, p238)

In 2024, this provider wrote 20 Medicare prescriptions for Alprazolam, about a third of the volume of the typical Texas prescriber of this medication (65.5). Medicare paid an average of $3.66 per fill, versus $5.46 statewide.

How often this provider prescribes it

This provider
20
TX average
65.5

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$3.66
TX average
$5.46

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

21.3
30-Day Fills
standardized to 30-day supplies
630
Days of Medication
total across all patients in 2024

About Velphoro: Sucroferric oxyhydroxide is used to lower high blood phosphate levels in people who are on dialysis due to severe kidney disease. Show more ▾

Dialysis removes some phosphate from your blood, but it is difficult to remove enough to keep your phosphate levels balanced. Decreasing blood phosphate levels can help keep your bones strong, prevent unsafe buildup of minerals in your body, and may decrease the risk of heart disease and strokes that can result from high phosphate levels. Sucroferric oxyhydroxide contains a form of iron which is not absorbed by your body. It works by binding to phosphate in your diet. The phosphate then passes out of your body in your stool. An oral phosphate binder for treatment of hyperphosphatemia.

In 2024, this provider wrote 19 Medicare prescriptions for Velphoro, about half the volume of the typical Texas prescriber of this medication (37.1). Medicare paid an average of $6,332.20 per fill, versus $3,009.14 statewide.

How often this provider prescribes it

This provider
19
TX average
37.1

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$6,332.20
TX average
$3,009.14

Gross Part D cost per fill; not the patient's out-of-pocket price.

29
30-Day Fills
standardized to 30-day supplies
856
Days of Medication
total across all patients in 2024

About Allopurinol: Allopurinol is used to treat gout and certain types of kidney stones. Show more ▾

It is also used to prevent increased uric acid levels in patients receiving cancer chemotherapy. These patients can have increased uric acid levels due to release of uric acid from the dying cancer cells. Allopurinol works by reducing the amount of uric acid made by the body. Increased uric acid levels can cause gout and kidney problems. A XANTHINE OXIDASE inhibitor that decreases URIC ACID production. It also acts as an antimetabolite on some simpler organisms.

In 2024, this provider wrote 18 Medicare prescriptions for Allopurinol, about a third of the volume of the typical Texas prescriber of this medication (46.8). Medicare paid an average of $10.30 per fill, versus $9.68 statewide.

How often this provider prescribes it

This provider
18
TX average
46.8

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$10.30
TX average
$9.68

Gross Part D cost per fill; not the patient's out-of-pocket price.

53
30-Day Fills
standardized to 30-day supplies
1,590
Days of Medication
total across all patients in 2024

About Metoprolol Tartrate: Metoprolol is used with or without other medications to treat high blood pressure (hypertension). Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication is also used to treat chest pain (angina) and to improve survival after a heart attack. Metoprolol belongs to a class of drugs known as beta blockers. It works by blocking the action of certain natural chemicals in your body, such as epinephrine, on the heart and blood vessels. This effect lowers the heart rate, blood pressure, and strain on the heart. A selective adrenergic beta-1 blocking agent that is commonly used to treat ANGINA PECTORIS; HYPERTENSION; and CARDIAC ARRHYTHMIAS.

In 2024, this provider wrote 18 Medicare prescriptions for Metoprolol Tartrate, about a third of the volume of the typical Texas prescriber of this medication (58.5). Medicare paid an average of $5.62 per fill, versus $6.73 statewide.

How often this provider prescribes it

This provider
18
TX average
58.5

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$5.62
TX average
$6.73

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

43.5
30-Day Fills
standardized to 30-day supplies
1,305
Days of Medication
total across all patients in 2024

About Labetalol Hcl: Labetalol is used with or without other medications to treat high blood pressure (hypertension). Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication is both an alpha blocker and beta blocker. It works by blocking the action of certain natural chemicals in your body such as epinephrine on the heart and blood vessels. This effect lowers the heart rate, blood pressure, and strain on the heart. A salicylamide derivative that is a non-cardioselective blocker of BETA-ADRENERGIC RECEPTORS and ALPHA-1 ADRENERGIC RECEPTORS.

In 2024, this provider wrote 17 Medicare prescriptions for Labetalol Hcl, about 62% of the volume of the typical Texas prescriber of this medication (27.6). Medicare paid an average of $28.68 per fill, versus $27.46 statewide.

How often this provider prescribes it

This provider
17
TX average
27.6

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$28.68
TX average
$27.46

Gross Part D cost per fill; not the patient's out-of-pocket price.

43
30-Day Fills
standardized to 30-day supplies
1,273
Days of Medication
total across all patients in 2024

About Atorvastatin Calcium: 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. Show more ▾

It belongs to a group of drugs known as "statins." It works by reducing the amount of cholesterol made by the liver. Lowering "bad" cholesterol and triglycerides and raising "good" cholesterol decreases the risk of heart disease and helps prevent strokes and heart attacks. In addition to eating a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. A pyrrole and heptanoic acid derivative, HYDROXYMETHYLGLUTARYL-COA REDUCTASE INHIBITOR (statin), and ANTICHOLESTEREMIC AGENT that is used to reduce serum levels of LDL-CHOLESTEROL; APOLIPOPROTEIN B; and TRIGLYCERIDES. It is used to increase serum levels of HDL-CHOLESTEROL in the treatment of HYPERLIPIDEMIAS, and for the prevention of CARDIOVASCULAR DISEASES in patients with multiple risk factors.

In 2024, this provider wrote 16 Medicare prescriptions for Atorvastatin Calcium, about 9% of the volume of the typical Texas prescriber of this medication (180.4). Medicare paid an average of $4.57 per fill, versus $9.48 statewide.

How often this provider prescribes it

This provider
16
TX average
180.4

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$4.57
TX average
$9.48

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

46.3
30-Day Fills
standardized to 30-day supplies
1,389
Days of Medication
total across all patients in 2024

About Midodrine Hcl: This medication is used for certain patients who have symptoms of low blood pressure when standing. Show more ▾

This condition is also known as orthostatic hypotension. Midodrine is used in people whose daily activities are severely affected by this condition, even after other treatments are used (such as support stockings). It is known as a sympathomimetic (alpha receptor agonist) that acts on the blood vessels to raise blood pressure. An ethanolamine derivative that is an adrenergic alpha-1 agonist. It is used as a vasoconstrictor agent in the treatment of HYPOTENSION.

In 2024, this provider wrote 15 Medicare prescriptions for Midodrine Hcl, about half the volume of the typical Texas prescriber of this medication (25.7). Medicare paid an average of $114.35 per fill, versus $64.86 statewide.

How often this provider prescribes it

This provider
15
TX average
25.7

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$114.35
TX average
$64.86

Gross Part D cost per fill; not the patient's out-of-pocket price.

32.8
30-Day Fills
standardized to 30-day supplies
984
Days of Medication
total across all patients in 2024

About Pantoprazole Sodium: Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux). Show more ▾

It works by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty swallowing, and cough. It helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Pantoprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.

In 2024, this provider wrote 15 Medicare prescriptions for Pantoprazole Sodium, about 19% of the volume of the typical Texas prescriber of this medication (80.6). Medicare paid an average of $9.87 per fill, versus $11.71 statewide.

How often this provider prescribes it

This provider
15
TX average
80.6

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$9.87
TX average
$11.71

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

25
30-Day Fills
standardized to 30-day supplies
700
Days of Medication
total across all patients in 2024

About Metolazone: Metolazone is a "water pill" (diuretic) that increases the amount of urine you make, which causes your body to get rid of excess water. Show more ▾

This drug is used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication also reduces swelling/fluid retention (edema) which can result from conditions such as heart failure or kidney disease. This can help to improve symptoms such as trouble breathing. A quinazoline-sulfonamide derived DIURETIC that functions by inhibiting SODIUM CHLORIDE SYMPORTERS.

In 2024, this provider wrote 14 Medicare prescriptions for Metolazone, about 62% of the volume of the typical Texas prescriber of this medication (22.7). Medicare paid an average of $18.29 per fill, versus $21.89 statewide.

How often this provider prescribes it

This provider
14
TX average
22.7

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$18.29
TX average
$21.89

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

21
30-Day Fills
standardized to 30-day supplies
630
Days of Medication
total across all patients in 2024

About Levothyroxine Sodium: Levothyroxine is used to treat an underactive thyroid (hypothyroidism). Show more ▾

It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. Having enough thyroid hormone is important for maintaining normal mental and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development. This medication is also used to treat other types of thyroid disorders (such as thyroid cancer). This medication should not be used to treat infertility unless it is caused by low thyroid hormone levels. The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (MONOIODOTYROSINE) and the coupling of iodotyrosines (DIIODOTYROSINE) in the THYROGLOBULIN. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form TRIIODOTHYRONINE which exerts a broad spectrum of stimulatory effects on cell metabolism.

In 2024, this provider wrote 12 Medicare prescriptions for Levothyroxine Sodium, about 8% of the volume of the typical Texas prescriber of this medication (149.9). Medicare paid an average of $12.98 per fill, versus $10.05 statewide.

How often this provider prescribes it

This provider
12
TX average
149.9

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$12.98
TX average
$10.05

Gross Part D cost per fill; not the patient's out-of-pocket price.

36
30-Day Fills
standardized to 30-day supplies
1,080
Days of Medication
total across all patients in 2024

About Mounjaro: Tirzepatide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes. Show more ▾

Controlling high blood sugar helps prevent kidney damage, blindness, nerve problems, loss of limbs, and sexual function problems. It lowers blood sugar by causing the release of your body's natural insulin and decreasing the amount of sugar your liver makes. An analog of GASTRIC INHIBITORY POLYPEPTIDE and agonist of GLUCOSE-DEPENDENT INSULINOTROPIC POLYPEPTIDE RECEPTOR and GLUCAGON-LIKE PEPTIDE-1 RECEPTOR used to enhance glycemic control of TYPE 2 DIABETES MELLITUS.

In 2024, this provider wrote 12 Medicare prescriptions for Mounjaro, about a quarter of the volume of the typical Texas prescriber of this medication (51.2). Medicare paid an average of $982.06 per fill, versus $1,267.11 statewide.

How often this provider prescribes it

This provider
12
TX average
51.2

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$982.06
TX average
$1,267.11

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

12
30-Day Fills
standardized to 30-day supplies
352
Days of Medication
total across all patients in 2024

About Sulfamethoxazole-Trimethoprim: This medication is a combination of two antibiotics: sulfamethoxazole and trimethoprim. Show more ▾

It is used to treat a wide variety of bacterial infections (such as middle ear, urine, respiratory, and intestinal infections). It is also used to prevent and treat a certain type of pneumonia (pneumocystis-type). This medication should not be used by children less than 2 months of age due to the risk of serious side effects. This medication treats only certain types of infections. It will not work for viral infections (such as flu). Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness.

In 2024, this provider wrote 12 Medicare prescriptions for Sulfamethoxazole-Trimethoprim, about half the volume of the typical Texas prescriber of this medication (27.5). Medicare paid an average of $1.18 per fill, versus $5.34 statewide.

How often this provider prescribes it

This provider
12
TX average
27.5

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$1.18
TX average
$5.34

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

12
30-Day Fills
standardized to 30-day supplies
360
Days of Medication
total across all patients in 2024

About Minoxidil: Minoxidil is used with other medications to treat high blood pressure (hypertension). Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Minoxidil works by relaxing blood vessels so blood can flow more easily. A potent direct-acting peripheral vasodilator (VASODILATOR AGENTS) that reduces peripheral resistance and produces a fall in BLOOD PRESSURE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p371)

In 2024, this provider wrote 11 Medicare prescriptions for Minoxidil, about a third of the volume of the typical Texas prescriber of this medication (31.7). Medicare paid an average of $36.38 per fill, versus $13.14 statewide.

How often this provider prescribes it

This provider
11
TX average
31.7

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$36.38
TX average
$13.14

Gross Part D cost per fill; not the patient's out-of-pocket price.

31
30-Day Fills
standardized to 30-day supplies
930
Days of Medication
total across all patients in 2024

About Gengraf: Cyclosporine is used to prevent organ rejection in people who have received a liver, kidney, or heart transplant. Show more ▾

It is usually taken along with other medications to allow your new organ to function normally. Cyclosporine is also used to treat severe cases of rheumatoid arthritis and plaque psoriasis. In these conditions, the body's defense system (immune system) attacks healthy tissues. Cyclosporine belongs to a class of drugs known as immunosuppressants. It works by weakening the immune system to help your body accept the new organ as if it were your own (in the case of an organ transplant) and to prevent further damage to your joints (in the case of rheumatoid arthritis) or skin (in the case of psoriasis).

In 2024, this provider wrote 11 Medicare prescriptions for Gengraf. Medicare paid an average of $172.91 per fill. No state comparison is available for this medication.

How often this provider prescribes it

No state benchmark is available for this medication.

What Medicare paid per fill

$172.91
Cost per fill

Gross Part D cost per fill; not the patient's out-of-pocket price.

11
30-Day Fills
standardized to 30-day supplies
330
Days of Medication
total across all patients in 2024

About Ondansetron Hcl: This medication is used alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy. Show more ▾

It is also used to prevent and treat nausea and vomiting after surgery. It works by blocking one of the body's natural substances (serotonin) that causes vomiting. A competitive serotonin type 3 receptor antagonist. It is effective in the treatment of nausea and vomiting caused by cytotoxic chemotherapy drugs, including cisplatin, and has reported anxiolytic and neuroleptic properties.

In 2024, this provider wrote 11 Medicare prescriptions for Ondansetron Hcl, about a third of the volume of the typical Texas prescriber of this medication (30.1). Medicare paid an average of $18.52 per fill, versus $12.56 statewide.

How often this provider prescribes it

This provider
11
TX average
30.1

This provider prescribes this medication less often than the average TX prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$18.52
TX average
$12.56

Gross Part D cost per fill; not the patient's out-of-pocket price.

17
30-Day Fills
standardized to 30-day supplies
391
Days of Medication
total across all patients in 2024
No medications match the current filters.
= the 5 medications this provider prescribes most.▲ More than typical≈ Typical▼ Less than typical= prescription volume vs the average TX prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the TX average cost per fill.

About this data. The prescription history for SANTIAGO VILLARREAL M.D. 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 Nephrology prescribing approach at this San Antonio, TX 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 TX 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.