MRS. LAUREN ELVIA CASTILLO FNP
Prescription History 1831650621
Nurse Practitioner - Family in Houston, TX
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for MRS. LAUREN ELVIA CASTILLO FNP, an active Family specialist practicing in Houston, TX. Our medical registry currently tracks 15 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 599 documented patient claims. Among these therapy options, the most frequently utilized medication is Tamsulosin Hcl, which accounts for 209 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.
| Medication | Prescriptions (2024)Rx (2024) | Avg Cost per FillCost / Fill | Vs. Other TX PrescribersVs. TX Avg |
|---|---|---|---|
| Tamsulosin Hcl | 209 | $15.28 | ▲ More than typical |
About Tamsulosin Hcl: Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH). Show more ▾ It does not shrink the prostate, but it works by relaxing the muscles in the prostate and the bladder. This helps to relieve symptoms of BPH such as difficulty in beginning the flow of urine, weak stream, and the need to urinate often or urgently (including during the middle of the night). Tamsulosin belongs to a class of drugs known as alpha blockers. Do not use this medication to treat high blood pressure. A sulfonamide derivative and adrenergic alpha-1 receptor antagonist that is used to relieve symptoms of urinary obstruction caused by BENIGN PROSTATIC HYPERPLASIA. In 2024, this provider wrote 209 Medicare prescriptions for Tamsulosin Hcl, about 2.4 times the volume of the typical Texas prescriber of this medication (86.4). Medicare paid an average of $15.28 per fill, versus $14.12 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 594.7 30-Day Fills standardized to 30-day supplies 17,804 Days of Medication total across all patients in 2024 | |||
| Finasteride | 104 | $13.29 | ▲ More than typical |
About Finasteride: Finasteride is used to shrink an enlarged prostate (benign prostatic hyperplasia or BPH) in adult men. Show more ▾ It may be used alone or taken in combination with other medications to reduce symptoms of BPH and may also reduce the need for surgery. Finasteride may improve symptoms of BPH and provide benefits such as decreased urge to urinate, better urine flow with less straining, less of a feeling that the bladder is not completely emptied, and decreased nighttime urination. This medication works by decreasing the amount of a natural body hormone (DHT) that causes growth of the prostate. Finasteride is not approved for prevention of prostate cancer. It may slightly increase the risk of developing a very serious form of prostate cancer. Talk to your doctor about the benefits and risks. Women and children should not use this medication. An orally active 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE inhibitor. It is used as a surgical alternative for treatment of benign PROSTATIC HYPERPLASIA. In 2024, this provider wrote 104 Medicare prescriptions for Finasteride, about 1.9 times the volume of the typical Texas prescriber of this medication (54.5). Medicare paid an average of $13.29 per fill, versus $13.02 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 300 30-Day Fills standardized to 30-day supplies 8,980 Days of Medication total across all patients in 2024 | |||
| Solifenacin Succinate | 53 | $46.87 | ▲ More than typical |
About Solifenacin Succinate: Solifenacin is used to treat an overactive bladder. Show more ▾ By relaxing the muscles in the bladder, solifenacin improves your ability to control your urination. It helps to reduce leaking of urine, feelings of needing to urinate right away, and frequent trips to the bathroom. This medication belongs to the class of drugs known as antispasmodics. A quinuclidine and tetrahydroisoquinoline derivative and selective M3 MUSCARINIC ANTAGONIST. It is used as a UROLOGIC AGENT in the treatment of URINARY INCONTINENCE. In 2024, this provider wrote 53 Medicare prescriptions for Solifenacin Succinate, about 1.5 times the volume of the typical Texas prescriber of this medication (34.7). Medicare paid an average of $46.87 per fill, versus $45.66 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 149 30-Day Fills standardized to 30-day supplies 4,447 Days of Medication total across all patients in 2024 | |||
| Methenamine Hippurate | 42 | $69.64 | ≈ Typical |
About Methenamine Hippurate: Methenamine is used to prevent or control returning urinary tract infections caused by certain bacteria. Show more ▾ It is not used to treat an active infection. Antibiotics must be used first to treat and cure the infection. Methenamine is a drug that stops the growth of bacteria in urine. This medication also contains an ingredient that helps to make the urine acidic. When the urine is acidic, methenamine turns into formaldehyde to kill the bacteria. This drug is effective only against bacterial infections in the urinary tract. It will not work for other types of bacterial infections (such as in the blood) or for viral infections (such as the common cold or flu). Unnecessary use or misuse of any antibacterial drug can lead to its decreased effectiveness. Both parts of molecule contribute to its antibacterial action. In 2024, this provider wrote 42 Medicare prescriptions for Methenamine Hippurate, about the same volume as the typical Texas prescriber of this medication (40.3). Medicare paid an average of $69.64 per fill, versus $68.88 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 100.7 30-Day Fills standardized to 30-day supplies 3,014 Days of Medication total across all patients in 2024 | |||
| GemtesaVibegron | 26 | $723.15 | ▼ Less than typical |
About Gemtesa: This medication is used to treat overactive bladder. Show more ▾ Overactive bladder is a problem with how your bladder stores urine that causes a sudden urge to urinate. The urge may be hard to control, and overactive bladder symptoms may include frequent urination, strong sudden urges to urinate, or involuntary loss of urine (incontinence). Vibegron works by relaxing a certain bladder muscle (detrusor), which helps the bladder hold more urine and lessens symptoms of overactive bladder. A beta3 adrenergic receptor agonist. In 2024, this provider wrote 26 Medicare prescriptions for Gemtesa, about a third of the volume of the typical Texas prescriber of this medication (63.4). Medicare paid an average of $723.15 per fill, versus $655.77 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 38 30-Day Fills standardized to 30-day supplies 1,140 Days of Medication total across all patients in 2024 | |||
| MyrbetriqMirabegron | 22 | $1,005.79 | ▼ Less than typical |
About Myrbetriq: This medication is used to treat certain bladder problems (overactive bladder, neurogenic detrusor overactivity). Show more ▾ Overactive bladder is a problem with how your bladder stores urine. Neurogenic detrusor overactivity is a bladder control condition caused by brain, spinal cord, or nerve problems. Symptoms of these conditions may include frequent urination, strong sudden urges to urinate that are hard to control, or involuntary loss of urine (incontinence). Mirabegron works by relaxing a certain bladder muscle (detrusor), which helps the bladder hold more urine and lessens symptoms of overactive bladder and neurogenic detrusor overactivity. A beta3-adrenergic receptor agonist. In 2024, this provider wrote 22 Medicare prescriptions for Myrbetriq, about half the volume of the typical Texas prescriber of this medication (43.4). Medicare paid an average of $1,005.79 per fill, versus $682.81 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 50 30-Day Fills standardized to 30-day supplies 1,500 Days of Medication total across all patients in 2024 | |||
| Oxybutynin Chloride ErOxybutynin Chloride | 19 | $47.91 | ▼ Less than typical |
About Oxybutynin Chloride Er: This is a long-acting form of oxybutynin that is used to treat overactive bladder and urinary conditions. Show more ▾ It relaxes the muscles in the bladder to help decrease problems of urgency and frequent urination. Oxybutynin belongs to a class of drugs known as antispasmodics. This medication is also used to treat children 6 years of age and older who have an overactive bladder due to certain nerve disorders (such as spina bifida). In 2024, this provider wrote 19 Medicare prescriptions for Oxybutynin Chloride Er, about half the volume of the typical Texas prescriber of this medication (32.1). Medicare paid an average of $47.91 per fill, versus $22.08 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 45 30-Day Fills standardized to 30-day supplies 1,350 Days of Medication total across all patients in 2024 | |||
| Potassium Citrate ErPotassium Citrate | 19 | $163.31 | ▼ Less than typical |
About Potassium Citrate Er: This medication is used to make the urine less acidic. Show more ▾ This effect helps the kidneys get rid of uric acid, thereby helping to prevent gout and kidney stones. This medication can also prevent and treat certain metabolic problems (acidosis) caused by kidney disease. Citric acid and citrate salts (which contain potassium and sodium) belong to a class of drugs known as urinary alkalinizers. If you have a condition that requires you to limit your intake of potassium and sodium, your doctor may direct you to take a product that is lower in potassium and sodium. A powder that dissolves in water, which is administered orally, and is used as a diuretic, expectorant, systemic alkalizer, and electrolyte replenisher. In 2024, this provider wrote 19 Medicare prescriptions for Potassium Citrate Er, about 72% of the volume of the typical Texas prescriber of this medication (26.5). Medicare paid an average of $163.31 per fill, versus $88.75 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 53.6 30-Day Fills standardized to 30-day supplies 1,608 Days of Medication total across all patients in 2024 | |||
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 17 | $9.64 | ▼ Less than typical |
About Amoxicillin-Clavulanate Potass: Amoxicillin/clavulanic acid is a combination penicillin-type antibiotic used to treat a wide variety of bacterial infections. Show more ▾ It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. In 2024, this provider wrote 17 Medicare prescriptions for Amoxicillin-Clavulanate Potass, about half the volume of the typical Texas prescriber of this medication (29.9). Medicare paid an average of $9.64 per fill, versus $9.53 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 17 30-Day Fills standardized to 30-day supplies 111 Days of Medication total across all patients in 2024 | |||
| Bicalutamide | 17 | $41.82 | ▼ Less than typical |
About Bicalutamide: Bicalutamide is used to treat prostate cancer. Show more ▾ This medication works by blocking the action of hormones in the prostate, slowing the growth of cancer cells. This medication should not be used in women and children. Approved for treatment of advanced prostate cancer. In 2024, this provider wrote 17 Medicare prescriptions for Bicalutamide, about 63% of the volume of the typical Texas prescriber of this medication (27.2). Medicare paid an average of $41.82 per fill, versus $27.73 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 51 30-Day Fills standardized to 30-day supplies 1,530 Days of Medication total across all patients in 2024 | |||
| Cefdinir | 16 | $9.65▼ below TX avg | ▼ Less than typical |
About Cefdinir: Cefdinir is used to treat a wide variety of bacterial infections. Show more ▾ This medication is known as a cephalosporin antibiotic. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. A third-generation oral cephalosporin antibacterial agent that is used to treat bacterial infections of the respiratory tract and skin. In 2024, this provider wrote 16 Medicare prescriptions for Cefdinir, about half the volume of the typical Texas prescriber of this medication (30.5). Medicare paid an average of $9.65 per fill, versus $15.72 statewide. How often this provider prescribes it 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's average cost per fill is below the TX average for this medication. 16 30-Day Fills standardized to 30-day supplies 125 Days of Medication total across all patients in 2024 | |||
| Estradiol | 16 | $60.83 | ▼ Less than typical |
About Estradiol: This medication is a hormone. Show more ▾ It is used by women to help reduce vaginal symptoms of menopause (such as vaginal dryness/burning/itching). These symptoms are caused by the body making less estrogen. When treating only vaginal symptoms of menopause, products applied directly inside the vagina (such as this medication) should be used first. Estrogens that are taken by mouth, absorbed through the skin, or injected may have greater risks of side effects due to more estrogen being absorbed. The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids. In 2024, this provider wrote 16 Medicare prescriptions for Estradiol, about a third of the volume of the typical Texas prescriber of this medication (39.4). Medicare paid an average of $60.83 per fill, versus $48.80 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 40.4 30-Day Fills standardized to 30-day supplies 1,198 Days of Medication total across all patients in 2024 | |||
| Ciprofloxacin Hcl | 15 | $8.62 | ▼ Less than typical |
About Ciprofloxacin Hcl: This medication is used to treat a variety of bacterial infections. Show more ▾ Ciprofloxacin belongs to a class of drugs called quinolone antibiotics. It works by stopping the growth of bacteria. This antibiotic treats only bacterial infections. It will not work for virus infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections. A broad-spectrum antimicrobial carboxyfluoroquinoline. In 2024, this provider wrote 15 Medicare prescriptions for Ciprofloxacin Hcl, about half the volume of the typical Texas prescriber of this medication (32). Medicare paid an average of $8.62 per fill, versus $7.25 statewide. How often this provider prescribes it 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 15 30-Day Fills standardized to 30-day supplies 149 Days of Medication total across all patients in 2024 | |||
| Allopurinol | 12 | $10.20 | ▼ Less than typical |
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 12 Medicare prescriptions for Allopurinol, about a quarter of the volume of the typical Texas prescriber of this medication (46.8). Medicare paid an average of $10.20 per fill, versus $9.68 statewide. How often this provider prescribes it 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 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 | |||
| NitrofurantoinNitrofurantoin Macrocrystal | 12 | $15.98▼ below TX avg | ▼ Less than typical |
About Nitrofurantoin: This medication is used to treat or prevent certain urinary tract infections. Show more ▾ This medication is an antibiotic that works by stopping the growth of bacteria. It will not work for viral infections (such as common cold, flu). Unnecessary use or overuse of any antibiotic can lead to its decreased effectiveness. Nitrofurantoin should not be used by children less than one month of age due to the risk of a certain blood problem (hemolytic anemia). A urinary anti-infective agent effective against most gram-positive and gram-negative organisms. Although sulfonamides and antibiotics are usually the agents of choice for urinary tract infections, nitrofurantoin is widely used for prophylaxis and long-term suppression. In 2024, this provider wrote 12 Medicare prescriptions for Nitrofurantoin, about a third of the volume of the typical Texas prescriber of this medication (28.6). Medicare paid an average of $15.98 per fill, versus $31.64 statewide. How often this provider prescribes it 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's average cost per fill is below the TX average for this medication. 20.7 30-Day Fills standardized to 30-day supplies 568 Days of Medication total across all patients in 2024 | |||
About this data. The prescription history for MRS. LAUREN ELVIA CASTILLO FNP 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 Family prescribing approach at this Houston, 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.
