DANIEL C. YAU MD
Prescription History 1437218021
Ophthalmology in Riverside, CA
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DANIEL C. YAU MD, an active Ophthalmology specialist practicing in Riverside, CA. Our medical registry currently tracks 15 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 1,750 documented patient claims. Among these therapy options, the most frequently utilized medication is Latanoprost, which accounts for 621 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 |
|---|---|---|---|
| Latanoprost | 621 | $11.49▼ below CA avg | ▲ More than typical |
About Latanoprost: Latanoprost is used to treat high pressure inside the eye due to glaucoma (open angle type) or other eye diseases (such as ocular hypertension). Show more ▾ It is similar to a natural chemical in the body (prostaglandin) and works by regulating the flow of fluid within the eye which results in lower pressure. Lowering high pressure inside the eye helps to prevent blindness. A prostaglandin F analog used to treat OCULAR HYPERTENSION in patients with GLAUCOMA. In 2023, this provider wrote 621 Medicare prescriptions for Latanoprost, about 3.9 times the volume of the typical California prescriber of this medication (159). Medicare paid an average of $11.49 per fill, versus $21.01 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. 1,302.6 30-Day Fills standardized to 30-day supplies 38,981 Days of Medication total across all patients in 2023 | |||
| Prednisolone Acetate | 184 | $63.21 | ▲ More than typical |
About Prednisolone Acetate: This medication is used to treat certain eye conditions due to inflammation or injury. Show more ▾ Prednisolone works by relieving symptoms such as swelling, redness, and itching. It belongs to a class of drugs known as corticosteroids. In 2023, this provider wrote 184 Medicare prescriptions for Prednisolone Acetate, about 1.3 times the volume of the typical California prescriber of this medication (142). Medicare paid an average of $63.21 per fill, versus $51.41 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 257.1 30-Day Fills standardized to 30-day supplies 7,126 Days of Medication total across all patients in 2023 | |||
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 182 | $23.29▼ below CA avg | ▲ More than typical |
About Dorzolamide-Timolol: This product contains two drugs used to treat high pressure inside the eye due to glaucoma (open angle-type) or other eye diseases (such as ocular hypertension). Show more ▾ Lowering high pressure inside the eye helps to prevent blindness. This medication works by decreasing the amount of fluid within the eye. Timolol belongs to a class of drugs known as beta-blockers, and dorzolamide belongs to a class of drugs known as carbonic anhydrase inhibitors. In 2023, this provider wrote 182 Medicare prescriptions for Dorzolamide-Timolol, about 1.6 times the volume of the typical California prescriber of this medication (115). Medicare paid an average of $23.29 per fill, versus $34.52 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. 566.5 30-Day Fills standardized to 30-day supplies 16,994 Days of Medication total across all patients in 2023 | |||
| Brimonidine Tartrate | 144 | $13.59▼ below CA avg | ▲ More than typical |
About Brimonidine Tartrate: This medication is used to treat open-angle glaucoma or high fluid pressure in the eye. Show more ▾ Lowering high fluid pressure in the eye reduces the risk of vision loss, nerve damage, or blindness. This medication lowers pressure by allowing better fluid drainage from within the eye and also by reducing the amount of fluid formed in the eye. It is known as an alpha agonist. This drug is not recommended for use in children less than 2 years of age due to an increased risk of serious side effects such as very slowed breathing. Ask the doctor or pharmacist for details. A quinoxaline derivative and ADRENERGIC ALHPA-2 RECEPTOR AGONIST that is used to manage INTRAOCULAR PRESSURE associated with OPEN-ANGLE GLAUCOMA and OCULAR HYPERTENSION. In 2023, this provider wrote 144 Medicare prescriptions for Brimonidine Tartrate, about 1.8 times the volume of the typical California prescriber of this medication (78). Medicare paid an average of $13.59 per fill, versus $43.38 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. 404.7 30-Day Fills standardized to 30-day supplies 12,138 Days of Medication total across all patients in 2023 | |||
| Cyclosporine | 134 | $129.50▼ below CA avg | ▲ More than typical |
About Cyclosporine: Cyclosporine eye drops are used to treat a certain type of dry eyes. Show more ▾ They work by increasing the amount of tears you make. A group of closely related cyclic undecapeptides from the fungi Trichoderma polysporum and Cylindocarpon lucidum. They have some antineoplastic and antifungal action and significant immunosuppressive effects. Cyclosporins have been proposed as adjuvants in tissue and organ transplantation to suppress graft rejection. In 2023, this provider wrote 134 Medicare prescriptions for Cyclosporine, about 4.2 times the volume of the typical California prescriber of this medication (32). Medicare paid an average of $129.50 per fill, versus $516.93 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. 180 30-Day Fills standardized to 30-day supplies 5,400 Days of Medication total across all patients in 2023 | |||
| Timolol Maleate | 122 | $16.04▼ below CA avg | ▲ More than typical |
About Timolol Maleate: This medication is used to treat high pressure inside the eye due to glaucoma (open angle-type) or other eye diseases (such as ocular hypertension). Show more ▾ Lowering high pressure inside the eye helps to prevent blindness. This medication works by decreasing the amount of fluid within the eye. Timolol belongs to a class of drugs known as beta-blockers. A beta-adrenergic antagonist that is similar in action to PROPRANOLOL; the levo-isomer is more active. Timolol has been proposed as an anti-hypertensive, anti-arrhythmic, anti-angina, and anti-glaucoma agent. It is also used in the treatment of MIGRAINE DISORDERS and tremor. In 2023, this provider wrote 122 Medicare prescriptions for Timolol Maleate, about 5.3 times the volume of the typical California prescriber of this medication (23). Medicare paid an average of $16.04 per fill, versus $450.88 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. 320.8 30-Day Fills standardized to 30-day supplies 9,625 Days of Medication total across all patients in 2023 | |||
| Ofloxacin | 100 | $11.85▼ below CA avg | ▲ More 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 100 Medicare prescriptions for Ofloxacin, about 1.5 times the volume of the typical California prescriber of this medication (67). Medicare paid an average of $11.85 per fill, versus $20.16 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. 101.3 30-Day Fills standardized to 30-day supplies 1,805 Days of Medication total across all patients in 2023 | |||
| Bimatoprost | 69 | $112.71▼ below CA avg | ▲ More than typical |
About Bimatoprost: Bimatoprost is used to treat high pressure inside the eye due to glaucoma (open-angle type) or other eye diseases (such as ocular hypertension). Show more ▾ Lowering high pressure inside the eye can help prevent blindness. This medication works by regulating the flow of fluid within the eye to maintain a normal pressure. A cloprostenol-derived amide that is used as an ANTIHYPERTENSIVE AGENT in the treatment of OPEN-ANGLE GLAUCOMA and OCULAR HYPERTENSION. In 2023, this provider wrote 69 Medicare prescriptions for Bimatoprost, about 1.7 times the volume of the typical California prescriber of this medication (40). Medicare paid an average of $112.71 per fill, versus $148.28 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. 152.2 30-Day Fills standardized to 30-day supplies 4,550 Days of Medication total across all patients in 2023 | |||
| Ketorolac Tromethamine | 48 | $14.75▼ below CA avg | ▼ Less than typical |
About Ketorolac Tromethamine: This medication is used to temporarily relieve itching eyes caused by seasonal allergies. Show more ▾ It is also used to prevent and treat eye swelling due to a certain type of eye surgery (cataract removal). Ketorolac belongs to a class of drugs known as nonsteroidal anti-inflammatory drugs (NSAIDs). It works by blocking certain natural substances in your body to reduce pain and swelling. A pyrrolizine carboxylic acid derivative structurally related to INDOMETHACIN. It is a non-steroidal anti-inflammatory agent used for analgesia for postoperative pain and inhibits cyclooxygenase activity. In 2023, this provider wrote 48 Medicare prescriptions for Ketorolac Tromethamine, about half the volume of the typical California prescriber of this medication (87). Medicare paid an average of $14.75 per fill, versus $25.40 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. 57.2 30-Day Fills standardized to 30-day supplies 1,483 Days of Medication total across all patients in 2023 | |||
| Dorzolamide Hcl | 32 | $22.09▼ below CA avg | ▼ Less than typical |
About Dorzolamide Hcl: Dorzolamide is used to treat high pressure inside the eye due to glaucoma (open angle-type) or other eye diseases (such as ocular hypertension). Show more ▾ Lowering high pressure inside the eye helps to prevent blindness. This medication works by decreasing the amount of fluid within the eye. It belongs to a class of drugs known as carbonic anhydrase inhibitors. In 2023, this provider wrote 32 Medicare prescriptions for Dorzolamide Hcl, about half the volume of the typical California prescriber of this medication (55). Medicare paid an average of $22.09 per fill, versus $32.79 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. 73.2 30-Day Fills standardized to 30-day supplies 2,195 Days of Medication total across all patients in 2023 | |||
| Levobunolol Hcl | 31 | $36.55▼ below CA avg | ≈ Typical |
About Levobunolol Hcl: This medication is used alone or with other medications to treat high pressure inside the eye due to glaucoma (open-angle type) or other eye diseases (such as ocular hypertension). Show more ▾ Lowering high pressure inside the eye helps to prevent blindness. Levobunolol belongs to a class of drugs known as beta blockers and works by decreasing the amount of fluid production within the eye. In 2023, this provider wrote 31 Medicare prescriptions for Levobunolol Hcl, about the same volume as the typical California prescriber of this medication (30). Medicare paid an average of $36.55 per fill, versus $40.66 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. 102.2 30-Day Fills standardized to 30-day supplies 3,070 Days of Medication total across all patients in 2023 | |||
| Betaxolol Hcl | 27 | $83.03▼ below CA avg | ▲ More than typical |
About Betaxolol Hcl: This medication is used alone or with other medications to treat high pressure inside the eye due to glaucoma (open-angle type) or other eye diseases (such as ocular hypertension). Show more ▾ Lowering high pressure inside the eye helps to prevent blindness. Betaxolol belongs to a class of drugs known as beta blockers and works by decreasing the amount of fluid that is made within the eye. In 2023, this provider wrote 27 Medicare prescriptions for Betaxolol Hcl, about 1.4 times the volume of the typical California prescriber of this medication (19). Medicare paid an average of $83.03 per fill, versus $92.94 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. 69.6 30-Day Fills standardized to 30-day supplies 2,080 Days of Medication total across all patients in 2023 | |||
| Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha | 26 | $13.33▼ below CA avg | ▼ Less than typical |
About Neomycin-Polymyxin-Dexameth: This medication is used to treat conditions involving swelling (inflammation) of the eyes and to treat or prevent bacterial eye infections. Show more ▾ This product contains neomycin and polymyxin, antibiotics that work by stopping the growth of bacteria. It also contains dexamethasone, an anti-inflammatory corticosteroid that works by reducing swelling. This medication treats/prevents only bacterial eye infections. It will not work for other types of eye infections and may worsen them (such as infections caused by viruses, fungi, mycobacteria). Unnecessary use or overuse of any antibiotic can lead to its decreased effectiveness. In 2023, this provider wrote 26 Medicare prescriptions for Neomycin-Polymyxin-Dexameth, about 63% of the volume of the typical California prescriber of this medication (41). Medicare paid an average of $13.33 per fill, versus $14.80 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. 26 30-Day Fills standardized to 30-day supplies 404 Days of Medication total across all patients in 2023 | |||
| ValacyclovirValacyclovir Hcl | 19 | $79.33 | ≈ Typical |
About Valacyclovir: Valacyclovir is used to treat infections caused by certain types of viruses. Show more ▾ In children, it is used to treat cold sores around the mouth (caused by herpes simplex) and chickenpox (caused by varicella zoster). In adults, it is used to treat shingles (caused by herpes zoster) and cold sores around the mouth. Valacyclovir is also used to treat outbreaks of genital herpes. In people with frequent outbreaks, this medication is used to reduce the number of future episodes. Valacyclovir is an antiviral drug. It stops the growth of certain viruses. However, it is not a cure for these infections. The viruses that cause these infections continue to live in the body even between outbreaks. Valacyclovir decreases the severity and length of these outbreaks. It helps the sores heal faster, keeps new sores from forming, and decreases pain/itching. This medication may also help reduce how long pain remains after the sores heal. A prodrug of acyclovir that is used in the treatment of HERPES ZOSTER and HERPES SIMPLEX VIRUS INFECTION of the skin and mucous membranes, including GENITAL HERPES. In 2023, this provider wrote 19 Medicare prescriptions for Valacyclovir, about the same volume as the typical California prescriber of this medication (21). Medicare paid an average of $79.33 per fill, versus $52.83 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 55.5 30-Day Fills standardized to 30-day supplies 1,625 Days of Medication total across all patients in 2023 | |||
| ErythromycinErythromycin Base | 11 | $16.19 | ▼ Less than typical |
About Erythromycin: Erythromycin is used to treat a wide variety of bacterial infections. Show more ▾ It may also be used to prevent certain bacterial infections. Erythromycin is known as a macrolide antibiotic. It works by stopping the growth of bacteria. This antibiotic treats or prevents 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 2023, this provider wrote 11 Medicare prescriptions for Erythromycin, about a quarter of the volume of the typical California prescriber of this medication (50). Medicare paid an average of $16.19 per fill, versus $15.82 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. 11 30-Day Fills standardized to 30-day supplies 140 Days of Medication total across all patients in 2023 | |||
About this data. The prescription history for DANIEL C. YAU MD 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 Ophthalmology prescribing approach at this Riverside, 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.
