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 7 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 100 documented patient claims. Among these therapy options, the most frequently utilized medication is Amoxicillin-Clavulanate Potass, which accounts for 22 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 (2023)Rx (2023) | Avg Cost per FillCost / Fill | Vs. Other CA PrescribersVs. CA Avg |
|---|---|---|---|
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 22 | $9.77▼ 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. A fixed-ratio combination of amoxicillin trihydrate and potassium clavulanate. In 2023, this provider wrote 22 Medicare prescriptions for Amoxicillin-Clavulanate Potass, about the same volume as the typical California prescriber of this medication (23). Medicare paid an average of $9.77 per fill, versus $13.20 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. 22 30-Day Fills standardized to 30-day supplies 169 Days of Medication total across all patients in 2023 | |||
| Albuterol Sulfate HfaAlbuterol Sulfate | 16 | $38.07▼ below CA avg | ▼ Less than typical |
About Albuterol Sulfate Hfa: Albuterol (also known as salbutamol) is used to treat wheezing and shortness of breath caused by breathing problems such as asthma. Show more ▾ It is a quick-relief medication. 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 2023, this provider wrote 16 Medicare prescriptions for Albuterol Sulfate Hfa, about a third of the volume of the typical California prescriber of this medication (53). Medicare paid an average of $38.07 per fill, versus $42.16 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. 16.7 30-Day Fills standardized to 30-day supplies 389 Days of Medication total across all patients in 2023 | |||
| Azithromycin | 15 | $6.58▼ below CA avg | ▼ Less than typical |
About Azithromycin: This medication is used to treat certain eye infections. Show more ▾ It is a macrolide antibiotic that works by stopping the growth of bacteria. This medication treats only bacterial eye infections. It will not work for other types of eye infections. Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness. A semi-synthetic macrolide antibiotic structurally related to ERYTHROMYCIN. It has been used in the treatment of Mycobacterium avium intracellulare infections, toxoplasmosis, and cryptosporidiosis. In 2023, this provider wrote 15 Medicare prescriptions for Azithromycin, about a third of the volume of the typical California prescriber of this medication (38). Medicare paid an average of $6.58 per fill, versus $7.94 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. 15 30-Day Fills standardized to 30-day supplies 74 Days of Medication total across all patients in 2023 | |||
| Ciprofloxacin Hcl | 13 | $20.25 | ▼ Less than typical |
About Ciprofloxacin Hcl: This medication is used to treat eye infections. Show more ▾ Ciprofloxacin belongs to a class of drugs called quinolone antibiotics. It works by stopping the growth of bacteria. This medication treats only bacterial eye infections. It will not work for other types of eye infections. Unnecessary use or overuse of any antibiotic can lead to its decreased effectiveness. A broad-spectrum antimicrobial carboxyfluoroquinoline. In 2023, this provider wrote 13 Medicare prescriptions for Ciprofloxacin Hcl, about half the volume of the typical California prescriber of this medication (29). Medicare paid an average of $20.25 per fill, versus $7.51 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 13 30-Day Fills standardized to 30-day supplies 97 Days of Medication total across all patients in 2023 | |||
| Ibuprofen | 12 | $4.76▼ below CA avg | ▼ Less than typical |
About Ibuprofen: Ibuprofen is used to help relieve mild to moderate pain. Show more ▾ When used with an opioid (such as morphine), it may be used to relieve moderate to severe pain. It is also used to reduce fever. Ibuprofen is known as a nonsteroidal anti-inflammatory drug (NSAID). It works by blocking your body's production of certain natural substances that cause inflammation. This effect helps to decrease swelling, pain, or fever. A non-steroidal anti-inflammatory agent with analgesic, antipyretic, and anti-inflammatory properties In 2023, this provider wrote 12 Medicare prescriptions for Ibuprofen, about a third of the volume of the typical California prescriber of this medication (41). Medicare paid an average of $4.76 per fill, versus $9.06 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. 12 30-Day Fills standardized to 30-day supplies 105 Days of Medication total across all patients in 2023 | |||
| Cyclobenzaprine Hcl | 11 | $2.13▼ below CA avg | ▼ Less than typical |
About Cyclobenzaprine Hcl: Cyclobenzaprine is used short-term to treat muscle spasms. Show more ▾ It is usually used along with rest and physical therapy. It works by helping to relax the muscles. This medication is not recommended for use in older adults because they may be at greater risk for side effects while using this drug. Ask the doctor or pharmacist for details. In 2023, this provider wrote 11 Medicare prescriptions for Cyclobenzaprine Hcl, about a third of the volume of the typical California prescriber of this medication (32). Medicare paid an average of $2.13 per fill, versus $16.68 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. 11 30-Day Fills standardized to 30-day supplies 170 Days of Medication total across all patients in 2023 | |||
| Doxycycline Hyclate | 11 | $17.81▼ below CA avg | ▼ Less than typical |
About Doxycycline Hyclate: This medication is used to treat a wide variety of bacterial infections, including those that cause acne. Show more ▾ This medication is also used to prevent malaria. This medication is known as a tetracycline 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 synthetic tetracycline derivative with similar antimicrobial activity. In 2023, this provider wrote 11 Medicare prescriptions for Doxycycline Hyclate, about a third of the volume of the typical California prescriber of this medication (27). Medicare paid an average of $17.81 per fill, versus $30.50 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. 11 30-Day Fills standardized to 30-day supplies 80 Days of Medication total across all patients in 2023 | |||
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 2023, 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 volume among CA prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.
