DR. CATARINA DIANA CASTANEDA M.D.
Prescription History 1710188198
Family Medicine in Ventura, CA
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. CATARINA DIANA CASTANEDA M.D., an active Family Medicine specialist practicing in Ventura, CA. Our medical registry currently tracks 2 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 42 documented patient claims. Among these therapy options, the most frequently utilized medication is Albuterol Sulfate Hfa, which accounts for 21 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 CA PrescribersVs. CA Avg |
|---|---|---|---|
| Albuterol Sulfate HfaAlbuterol Sulfate | 21 | $23.56▼ below CA avg | ▼ Less than typical |
About Albuterol Sulfate Hfa: 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). Show more ▾ It is also used to prevent asthma brought on by exercise. It is a quick-relief drug. Albuterol belongs to a class of drugs known as bronchodilators. It works by relaxing the muscles around the airways so that they open up and you can breathe more easily. Controlling symptoms of breathing problems can decrease time lost from work or school. A short-acting beta-2 adrenergic agonist that is primarily used as a bronchodilator agent to treat ASTHMA. Albuterol is prepared as a racemic mixture of R(-) and S(+) stereoisomers. The stereospecific preparation of R(-) isomer of albuterol is referred to as levalbuterol. In 2024, this provider wrote 21 Medicare prescriptions for Albuterol Sulfate Hfa, about a third of the volume of the typical California prescriber of this medication (57.9). Medicare paid an average of $23.56 per fill, versus $28.70 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA 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 CA average for this medication. 21 30-Day Fills standardized to 30-day supplies 503 Days of Medication total across all patients in 2024 | |||
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 21 | $8.56▼ below CA avg | ≈ 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 21 Medicare prescriptions for Amoxicillin-Clavulanate Potass, about 82% of the volume of the typical California prescriber of this medication (25.6). Medicare paid an average of $8.56 per fill, versus $9.18 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average CA 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 CA average for this medication. 21 30-Day Fills standardized to 30-day supplies 153 Days of Medication total across all patients in 2024 | |||
About this data. The prescription history for DR. CATARINA DIANA CASTANEDA 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 Family Medicine prescribing approach at this Ventura, CA 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 CA 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.
