MRS. RACHAEL MARIE LOUDON-CASTILLO FNP-C
Prescription History 1992376438
Nurse Practitioner - Family in Taft, TX
What does Rachael Loudon-Castillo prescribe?
In 2024, Rachael Loudon-Castillo wrote 211 Medicare prescriptions for 10 medications. The most prescribed was Mounjaro (tirzepatide), with 51 prescriptions.
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 Rachael Loudon-Castillo prescribes.
Medications 10 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
Tirzepatide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 51 prescriptions for Mounjaro, about as often as the typical Texas prescriber of it (51). Medicare paid $1,040.48 per fill, versus $1,267.11 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
Rachael Loudon-Castillo wrote 30 prescriptions for Atorvastatin Calcium, about 17% as often as the typical Texas prescriber of it (180). Medicare paid $6.58 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
Lisinopril is used to treat high blood pressure.
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 24 prescriptions for Lisinopril, about 22% as often as the typical Texas prescriber of it (108). Medicare paid $2.56 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
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 Texas prescribers
Rachael Loudon-Castillo wrote 18 prescriptions for Albuterol Sulfate Hfa, about 31% as often as the typical Texas prescriber of it (57). Medicare paid $15.60 per fill, versus $28.56 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 18 prescriptions for Amlodipine Besylate, about 14% as often as the typical Texas prescriber of it (133). Medicare paid $4.89 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 18 prescriptions for Levothyroxine Sodium, about 12% as often as the typical Texas prescriber of it (150). Medicare paid $6.00 per fill, versus $10.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a combination of 2 drugs: empagliflozin and metformin.
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 15 prescriptions for Synjardy, about 66% as often as the typical Texas prescriber of it (23). Medicare paid $910.62 per fill, versus $1,038.24 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 14 prescriptions for Metformin Hcl, about 15% as often as the typical Texas prescriber of it (96). Medicare paid $3.87 per fill, versus $7.22 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
Tiotropium is used to treat lung diseases such as asthma and COPD (bronchitis, emphysema).
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 12 prescriptions for Spiriva Respimat, about 39% as often as the typical Texas prescriber of it (30). Medicare paid $542.99 per fill, versus $706.11 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 control and prevent symptoms (such as wheezing and shortness of breath) caused by ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with Texas prescribers
Rachael Loudon-Castillo wrote 11 prescriptions for Breztri Aerosphere, about 28% as often as the typical Texas prescriber of it (39). Medicare paid $649.12 per fill, versus $798.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Rachael Loudon-Castillo’s prescriptions
What does Rachael Loudon-Castillo prescribe most?
In 2024 Medicare Part D data, Rachael Loudon-Castillo's most prescribed medications were Mounjaro (51), Atorvastatin Calcium (30) and Lisinopril (24).
How does Rachael Loudon-Castillo's prescribing compare with other Texas prescribers?
Of the 10 medications with a state comparison, Rachael Loudon-Castillo prescribes 1 about as often than the typical Texas prescriber and 9 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Rachael Loudon-Castillo 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.
