DR. DONALD LEE BARNISKE O.D.
Prescription History 1982760310
Optometrist in Brawley, CA

Active since December 29, 2006PECOS EnrolledAccepts Medicare Assignment
260 MAIN ST, BRAWLEY, CA 92227(760) 351-2020(760) 344-4552 Get Directions

NPPES record last updated: March 30, 2012. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. DONALD LEE BARNISKE O.D., an active Optometrist specialist practicing in Brawley, CA. Our medical registry currently tracks 6 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 191 documented patient claims. Among these therapy options, the most frequently utilized medication is Diclofenac Sodium, which accounts for 50 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.

6
Medications
191
Total Claims
199
30-Day Fills
Diclofenac Sodium
Most Prescribed · 50 claims
View details
6 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. DONALD LEE BARNISKE O.D. in 2023, with prescription volumes, average cost per fill, and CA state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other CA PrescribersVs. CA Avg

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 50 Medicare prescriptions for Diclofenac Sodium, about the same volume as the typical California prescriber of this medication (55). Medicare paid an average of $14.35 per fill, versus $41.99 statewide.

How often this provider prescribes it

This provider
50
CA average
55.0

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
$14.35
CA average
$41.99

This provider's average cost per fill is below the CA average for this medication.

50.6
30-Day Fills
standardized to 30-day supplies
976
Days of Medication
total across all patients in 2023

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 49 Medicare prescriptions for Neomycin-Polymyxin-Dexameth, about 1.2 times the volume of the typical California prescriber of this medication (41). Medicare paid an average of $16.13 per fill, versus $14.80 statewide.

How often this provider prescribes it

This provider
49
CA average
41.0

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
$16.13
CA average
$14.80

Gross Part D cost per fill; not the patient's out-of-pocket price.

49.1
30-Day Fills
standardized to 30-day supplies
774
Days of Medication
total across all patients in 2023

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 35 Medicare prescriptions for Latanoprost, about a quarter of the volume of the typical California prescriber of this medication (159). Medicare paid an average of $14.90 per fill, versus $21.01 statewide.

How often this provider prescribes it

This provider
35
CA average
159.0

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
$14.90
CA average
$21.01

This provider's average cost per fill is below the CA average for this medication.

36.5
30-Day Fills
standardized to 30-day supplies
875
Days of Medication
total across all patients in 2023

About Cromolyn Sodium: This medication is used to treat certain allergic eye conditions (vernal keratoconjunctivitis, vernal conjunctivitis, vernal keratitis). Show more ▾

It prevents itching of the eyes that can occur with these conditions. Cromolyn is known as a mast cell stabilizer. It works by blocking certain natural substances (histamine, SRS-A) that cause allergic symptoms. A chromone complex that acts by inhibiting the release of chemical mediators from sensitized MAST CELLS. It is used in the prophylactic treatment of both allergic and exercise-induced asthma, but does not affect an established asthmatic attack.

In 2023, this provider wrote 25 Medicare prescriptions for Cromolyn Sodium, about 64% of the volume of the typical California prescriber of this medication (39). Medicare paid an average of $20.12 per fill, versus $57.32 statewide.

How often this provider prescribes it

This provider
25
CA average
39.0

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
$20.12
CA average
$57.32

This provider's average cost per fill is below the CA average for this medication.

28.6
30-Day Fills
standardized to 30-day supplies
731
Days of Medication
total across all patients in 2023

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 17 Medicare prescriptions for Timolol Maleate, about 74% of the volume of the typical California prescriber of this medication (23). Medicare paid an average of $6.16 per fill, versus $450.88 statewide.

How often this provider prescribes it

This provider
17
CA average
23.0

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
$6.16
CA average
$450.88

This provider's average cost per fill is below the CA average for this medication.

19
30-Day Fills
standardized to 30-day supplies
485
Days of Medication
total across all patients in 2023

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 15 Medicare prescriptions for Ketorolac Tromethamine, about 17% of the volume of the typical California prescriber of this medication (87). Medicare paid an average of $12.31 per fill, versus $25.40 statewide.

How often this provider prescribes it

This provider
15
CA average
87.0

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
$12.31
CA average
$25.40

This provider's average cost per fill is below the CA average for this medication.

15
30-Day Fills
standardized to 30-day supplies
290
Days of Medication
total across all patients in 2023
No medications match the current filters.
More than typical Typical Less than typical= prescription volume vs the average CA prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the CA average cost per fill.

About this data. The prescription history for DR. DONALD LEE BARNISKE O.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 Optometrist prescribing approach at this Brawley, 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.