ERICK CASTILLO M.D., M.P.H
Prescription History 1891237467
Student in an Organized Health Care Education/Training Program in Los Angeles, CA
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for ERICK CASTILLO M.D., M.P.H, an active Student in an Organized Health Care Education/Training Program specialist practicing in Los Angeles, CA. Our medical registry currently tracks 19 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 648 documented patient claims. Among these therapy options, the most frequently utilized medication is Prednisone, which accounts for 115 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 |
|---|---|---|---|
| Prednisone | 115 | $1.56▼ below CA avg | ▲ More than typical |
About Prednisone: Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders. Show more ▾ Prednisone belongs to a class of drugs known as corticosteroids. It decreases your immune system's response to various diseases to reduce symptoms such as swelling and allergic-type reactions. A synthetic anti-inflammatory glucocorticoid derived from CORTISONE. It is biologically inert and converted to PREDNISOLONE in the liver. In 2023, this provider wrote 115 Medicare prescriptions for Prednisone, about 2.9 times the volume of the typical California prescriber of this medication (40). Medicare paid an average of $1.56 per fill, versus $8.18 statewide. How often this provider prescribes it This provider prescribes this medication more 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. 115 30-Day Fills standardized to 30-day supplies 523 Days of Medication total across all patients in 2023 | |||
| Azithromycin | 83 | $3.53▼ below CA avg | ▲ More 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 83 Medicare prescriptions for Azithromycin, about 2.2 times the volume of the typical California prescriber of this medication (38). Medicare paid an average of $3.53 per fill, versus $7.94 statewide. How often this provider prescribes it This provider prescribes this medication more 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. 83 30-Day Fills standardized to 30-day supplies 412 Days of Medication total across all patients in 2023 | |||
| Cephalexin | 76 | $8.38▼ below CA avg | ▲ More than typical |
About Cephalexin: This medication 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 medication will not work for viral infections (such as common cold, flu). Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness. A semisynthetic cephalosporin antibiotic with antimicrobial activity similar to that of CEPHALORIDINE or CEPHALOTHIN, but somewhat less potent. It is effective against both gram-positive and gram-negative organisms. In 2023, this provider wrote 76 Medicare prescriptions for Cephalexin, about 2.7 times the volume of the typical California prescriber of this medication (28). Medicare paid an average of $8.38 per fill, versus $9.52 statewide. How often this provider prescribes it This provider prescribes this medication more 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. 76 30-Day Fills standardized to 30-day supplies 455 Days of Medication total across all patients in 2023 | |||
| Ibuprofen | 44 | $3.60▼ below CA avg | ≈ 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 44 Medicare prescriptions for Ibuprofen, about the same volume as the typical California prescriber of this medication (41). Medicare paid an average of $3.60 per fill, versus $9.06 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. 44 30-Day Fills standardized to 30-day supplies 445 Days of Medication total across all patients in 2023 | |||
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 42 | $3.36▼ below CA avg | ▲ More than typical |
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. A drug combination with broad-spectrum antibacterial activity against both gram-positive and gram-negative organisms. It is effective in the treatment of many infections, including PNEUMOCYSTIS PNEUMONIA in AIDS. In 2023, this provider wrote 42 Medicare prescriptions for Sulfamethoxazole-Trimethoprim, about 1.7 times the volume of the typical California prescriber of this medication (25). Medicare paid an average of $3.36 per fill, versus $5.87 statewide. How often this provider prescribes it This provider prescribes this medication more 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. 42 30-Day Fills standardized to 30-day supplies 263 Days of Medication total across all patients in 2023 | |||
| Diclofenac Sodium | 37 | $8.27▼ below CA avg | ▼ Less than typical |
About Diclofenac Sodium: See also Warning section. Show more ▾ This medication is used to relieve joint pain from arthritis. Diclofenac belongs to a class of drugs known as nonsteroidal anti-inflammatory drugs (NSAIDs). If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. A non-steroidal anti-inflammatory agent (NSAID) with antipyretic and analgesic actions. It is primarily available as the sodium salt. In 2023, this provider wrote 37 Medicare prescriptions for Diclofenac Sodium, about 67% of the volume of the typical California prescriber of this medication (55). Medicare paid an average of $8.27 per fill, versus $41.99 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. 39 30-Day Fills standardized to 30-day supplies 647 Days of Medication total across all patients in 2023 | |||
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 35 | $7.41▼ below CA avg | ▲ More 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. A fixed-ratio combination of amoxicillin trihydrate and potassium clavulanate. In 2023, this provider wrote 35 Medicare prescriptions for Amoxicillin-Clavulanate Potass, about 1.5 times the volume of the typical California prescriber of this medication (23). Medicare paid an average of $7.41 per fill, versus $13.20 statewide. How often this provider prescribes it This provider prescribes this medication more 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. 35 30-Day Fills standardized to 30-day supplies 238 Days of Medication total across all patients in 2023 | |||
| Albuterol Sulfate HfaAlbuterol Sulfate | 31 | $26.65▼ 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 31 Medicare prescriptions for Albuterol Sulfate Hfa, about half the volume of the typical California prescriber of this medication (53). Medicare paid an average of $26.65 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. 31.7 30-Day Fills standardized to 30-day supplies 779 Days of Medication total across all patients in 2023 | |||
| Ondansetron OdtOndansetron | 28 | $5.23▼ below CA avg | ▲ More than typical |
About Ondansetron Odt: 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. Ondansetron 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 2023, this provider wrote 28 Medicare prescriptions for Ondansetron Odt, about 1.3 times the volume of the typical California prescriber of this medication (22). Medicare paid an average of $5.23 per fill, versus $21.79 statewide. How often this provider prescribes it This provider prescribes this medication more 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. 28 30-Day Fills standardized to 30-day supplies 131 Days of Medication total across all patients in 2023 | |||
| Naproxen | 24 | $4.67▼ below CA avg | ≈ Typical |
About Naproxen: Naproxen is used to relieve mild to moderate pain from various conditions. Show more ▾ It also reduces pain, swelling, and joint stiffness from arthritis. This medication is known as a nonsteroidal anti-inflammatory drug (NSAID). It works by blocking your body's production of certain natural substances that cause inflammation. If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. See also Warning section. This form of naproxen is absorbed slowly and should not be used for pain that needs quick relief (such as during a gout attack). Ask your doctor or pharmacist about using a different form of this drug or other medications for quick relief of pain. An anti-inflammatory agent with analgesic and antipyretic properties. Both the acid and its sodium salt are used in the treatment of rheumatoid arthritis and other rheumatic or musculoskeletal disorders, dysmenorrhea, and acute gout. In 2023, this provider wrote 24 Medicare prescriptions for Naproxen, about 83% of the volume of the typical California prescriber of this medication (29). Medicare paid an average of $4.67 per fill, versus $11.99 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. 24 30-Day Fills standardized to 30-day supplies 390 Days of Medication total across all patients in 2023 | |||
| Ofloxacin | 23 | $26.46 | ▼ Less than typical |
About Ofloxacin: This medication is used to treat eye infections. Show more ▾ Ofloxacin 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 synthetic fluoroquinolone antibacterial agent that inhibits the supercoiling activity of bacterial DNA GYRASE, halting DNA REPLICATION. In 2023, this provider wrote 23 Medicare prescriptions for Ofloxacin, about a third of the volume of the typical California prescriber of this medication (67). Medicare paid an average of $26.46 per fill, versus $20.16 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 23 30-Day Fills standardized to 30-day supplies 275 Days of Medication total across all patients in 2023 | |||
| Paxlovid (Eua)Nirmatrelvir/Ritonavir | 19 | $10.97▼ below CA avg | ≈ Typical |
About Paxlovid (Eua): The combination of nirmatrelvir tablets and ritonavir tablets is a product that the FDA is allowing to be given for emergency use to treat COVID-19. Show more ▾ The product is also approved to be used in Canada to treat COVID-19. It is used by people who have recently tested positive for coronavirus, have had mild to moderate symptoms for no more than 5 days and are not hospitalized. To receive this product you must also be at high risk for COVID-19 complications due to older age, obesity, or ongoing medical conditions (such as lung or heart disease or diabetes, among others). Talk to your doctor about the risks and benefits of treatment with nirmatrelvir and ritonavir. Nirmatrelvir is a SARS-CoV-2 main protease inhibitor. It works by preventing the growth of the virus that causes COVID-19. Ritonavir increases (boosts) the levels of nirmatrelvir. This helps nirmatrelvir work better. More information about nirmatrelvir and ritonavir is available from the FDA Fact Sheet for Patients, Parents, and Caregivers for Emergency Use and from the Health Canada Patient Medication Information sheet. There is limited information about how safe and effective the combination of nirmatrelvir and ritonavir is for treating COVID-19. Study results show that nirmatrelvir and ritonavir may help people who have recently tested positive for coronavirus stay out of the hospital. This product is not for use by people who are hospitalized due to COVID-19. The information in this document reflects emerging data, which is evolving and subject to reassessment. Users should be aware of these considerations in their review of nirmatrelvir and ritonavir, and it is always the responsibility of treating practitioners to exercise independent judgement in making care decisions. In 2023, this provider wrote 19 Medicare prescriptions for Paxlovid (Eua), about 79% of the volume of the typical California prescriber of this medication (24). Medicare paid an average of $10.97 per fill, versus $11.70 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. 19 30-Day Fills standardized to 30-day supplies 95 Days of Medication total across all patients in 2023 | |||
| Ciprofloxacin Hcl | 16 | $5.39▼ below CA avg | ▼ 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 16 Medicare prescriptions for Ciprofloxacin Hcl, about half the volume of the typical California prescriber of this medication (29). Medicare paid an average of $5.39 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 This provider's average cost per fill is below the CA average for this medication. 16 30-Day Fills standardized to 30-day supplies 106 Days of Medication total across all patients in 2023 | |||
| Meclizine Hcl | 15 | $3.63▼ below CA avg | ▼ Less than typical |
About Meclizine Hcl: Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness. Show more ▾ It may also be used to reduce dizziness and loss of balance (vertigo) caused by inner ear problems. In 2023, this provider wrote 15 Medicare prescriptions for Meclizine Hcl, about a third of the volume of the typical California prescriber of this medication (36). Medicare paid an average of $3.63 per fill, versus $10.99 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 190 Days of Medication total across all patients in 2023 | |||
| Clotrimazole | 13 | $16.91▼ below CA avg | ▼ Less than typical |
About Clotrimazole: Clotrimazole is used to treat skin infections such as athlete's foot, jock itch, ringworm, and other fungal skin infections (candidiasis). Show more ▾ This medication is also used to treat a skin condition known as pityriasis (tinea versicolor), a fungal infection that causes a lightening or darkening of the skin of the neck, chest, arms, or legs. Clotrimazole is an azole antifungal that works by preventing the growth of fungus. An imidazole derivative with a broad spectrum of antimycotic activity. It inhibits biosynthesis of the sterol ergostol, an important component of fungal CELL MEMBRANES. Its action leads to increased membrane permeability and apparent disruption of enzyme systems bound to the membrane. In 2023, this provider wrote 13 Medicare prescriptions for Clotrimazole, about a third of the volume of the typical California prescriber of this medication (31). Medicare paid an average of $16.91 per fill, versus $34.14 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. 13 30-Day Fills standardized to 30-day supplies 320 Days of Medication total across all patients in 2023 | |||
| Hydrocortisone | 13 | $5.97▼ below CA avg | ▼ Less than typical |
About Hydrocortisone: Hydrocortisone is a man-made version of a natural substance (cortisol) made by the adrenal gland. Show more ▾ This drug is used to treat low cortisol levels caused by diseases of the adrenal gland (such as Addison's disease, adrenocortical insufficiency). Hydrocortisone belongs to a class of drugs known as corticosteroids. Corticosteroids are needed in many ways for the body to function well. They are important for salt and water balance and keeping blood pressure normal. The main glucocorticoid secreted by the ADRENAL CORTEX. Its synthetic counterpart is used, either as an injection or topically, in the treatment of inflammation, allergy, collagen diseases, asthma, adrenocortical deficiency, shock, and some neoplastic conditions. In 2023, this provider wrote 13 Medicare prescriptions for Hydrocortisone, about half the volume of the typical California prescriber of this medication (27). Medicare paid an average of $5.97 per fill, versus $20.18 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. 13 30-Day Fills standardized to 30-day supplies 273 Days of Medication total across all patients in 2023 | |||
| Promethazine Hcl | 12 | $8.43▼ below CA avg | ▼ Less than typical |
About Promethazine Hcl: See also Warning section. Show more ▾ Promethazine is used to prevent and treat nausea and vomiting related to certain conditions (such as motion sickness, or before/after surgery). It is also used to treat allergy symptoms such as rash, itching, and runny nose. It may be used to help you feel sleepy/relaxed before and after surgery or to help certain opioid pain relievers (such as meperidine) work better. The suppository form is used when medications cannot be taken by mouth. Promethazine is an antihistamine and works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. Its other effects (such as anti-nausea, calming, pain relief) may work by affecting other natural substances (such as acetylcholine) and by acting directly on certain parts of the brain. In 2023, this provider wrote 12 Medicare prescriptions for Promethazine Hcl, about half the volume of the typical California prescriber of this medication (22). Medicare paid an average of $8.43 per fill, versus $16.07 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 | |||
| Amoxicillin | 11 | $2.44▼ below CA avg | ▼ Less than typical |
About Amoxicillin: Amoxicillin is used to treat a wide variety of bacterial infections. Show more ▾ This medication is a penicillin-type 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. Amoxicillin is also used with other medications to treat stomach/intestinal ulcers caused by the bacteria H. pylori and to prevent the ulcers from returning. A broad-spectrum semisynthetic antibiotic similar to AMPICILLIN except that its resistance to gastric acid permits higher serum levels with oral administration. In 2023, this provider wrote 11 Medicare prescriptions for Amoxicillin, about a third of the volume of the typical California prescriber of this medication (35). Medicare paid an average of $2.44 per fill, versus $5.06 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. 11 30-Day Fills standardized to 30-day supplies 87 Days of Medication total across all patients in 2023 | |||
| Levocetirizine Dihydrochloride | 11 | $7.49▼ below CA avg | ▼ Less than typical |
About Levocetirizine Dihydrochloride: Levocetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, and sneezing. Show more ▾ It is also used to relieve itching and hives. It works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. Levocetirizine does not prevent hives or prevent/treat a serious allergic reaction (such as anaphylaxis). If your doctor has prescribed epinephrine to treat allergic reactions, always carry your epinephrine injector with you. Do not use levocetirizine in place of your epinephrine. In 2023, this provider wrote 11 Medicare prescriptions for Levocetirizine Dihydrochloride, about 19% of the volume of the typical California prescriber of this medication (57). Medicare paid an average of $7.49 per fill, versus $22.57 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 210 Days of Medication total across all patients in 2023 | |||
About this data. The prescription history for ERICK CASTILLO M.D., M.P.H 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 Student in an Organized Health Care Education/Training Program prescribing approach at this Los Angeles, 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.
