Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. CHRISTA L WALLING O.D.
Prescription History 1306833421
Optometrist in Greenfield, IN

Active since October 04, 2005PECOS EnrolledAccepts Medicare Assignment
0/100
CMS Quality Rating
1451 JASON RD, GREENFIELD, IN 46140(317) 462-6601(317) 462-6625 Get Directions

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. CHRISTA L WALLING O.D., an active Optometrist specialist practicing in Greenfield, IN. Our medical registry currently tracks 11 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 468 documented patient claims. Among these therapy options, the most frequently utilized medication is Latanoprost, which accounts for 159 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.

11
Medications
468
Total Claims
1,118
30-Day Fills
Latanoprost
Most Prescribed · 159 claims
View details
11 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. CHRISTA L WALLING O.D. in 2023, with prescription volumes, average cost per fill, and IN state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other IN PrescribersVs. IN Avg

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 159 Medicare prescriptions for Latanoprost, about 1.3 times the volume of the typical Indiana prescriber of this medication (121). Medicare paid an average of $34.53 per fill, versus $23.86 statewide.

How often this provider prescribes it

This provider
159
IN average
121.0

This provider prescribes this medication more often than the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$34.53
IN average
$23.86

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

440.9
30-Day Fills
standardized to 30-day supplies
13,216
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 71 Medicare prescriptions for Timolol Maleate, about 6.5 times the volume of the typical Indiana prescriber of this medication (11). Medicare paid an average of $15.42 per fill, versus $561.10 statewide.

How often this provider prescribes it

This provider
71
IN average
11.0

This provider prescribes this medication more often than the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$15.42
IN average
$561.10

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

165.9
30-Day Fills
standardized to 30-day supplies
4,935
Days of Medication
total across all patients in 2023

About Restasis: 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 51 Medicare prescriptions for Restasis, about 1.5 times the volume of the typical Indiana prescriber of this medication (33). Medicare paid an average of $1,559.30 per fill, versus $1,117.13 statewide.

How often this provider prescribes it

This provider
51
IN average
33.0

This provider prescribes this medication more often than the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$1,559.30
IN average
$1,117.13

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

117
30-Day Fills
standardized to 30-day supplies
3,510
Days of Medication
total across all patients in 2023

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 50 Medicare prescriptions for Dorzolamide-Timolol, about 76% of the volume of the typical Indiana prescriber of this medication (66). Medicare paid an average of $36.75 per fill, versus $32.44 statewide.

How often this provider prescribes it

This provider
50
IN average
66.0

This provider's prescribing volume for this medication is in line with the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$36.75
IN average
$32.44

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

122.1
30-Day Fills
standardized to 30-day supplies
3,661
Days of Medication
total across all patients in 2023

About Travoprost: Travoprost 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 derivative that is used as an ANTIHYPERTENSIVE AGENT in the treatment of OPEN-ANGLE GLAUCOMA and OCULAR HYPERTENSION.

In 2023, this provider wrote 25 Medicare prescriptions for Travoprost, about 81% of the volume of the typical Indiana prescriber of this medication (31). Medicare paid an average of $240.39 per fill, versus $238.69 statewide.

How often this provider prescribes it

This provider
25
IN average
31.0

This provider's prescribing volume for this medication is in line with the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$240.39
IN average
$238.69

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

50
30-Day Fills
standardized to 30-day supplies
1,462
Days of Medication
total across all patients in 2023

About Lumigan: 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 24 Medicare prescriptions for Lumigan, about half the volume of the typical Indiana prescriber of this medication (52). Medicare paid an average of $620.32 per fill, versus $479.94 statewide.

How often this provider prescribes it

This provider
24
IN average
52.0

This provider prescribes this medication less often than the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$620.32
IN average
$479.94

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

53.6
30-Day Fills
standardized to 30-day supplies
1,588
Days of Medication
total across all patients in 2023

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 22 Medicare prescriptions for Brimonidine Tartrate, about half the volume of the typical Indiana prescriber of this medication (50). Medicare paid an average of $21.74 per fill, versus $40.24 statewide.

How often this provider prescribes it

This provider
22
IN average
50.0

This provider prescribes this medication less often than the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$21.74
IN average
$40.24

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

53.5
30-Day Fills
standardized to 30-day supplies
1,590
Days of Medication
total across all patients in 2023

About Xiidra: This medication is used to treat dry eye disease.

In 2023, this provider wrote 21 Medicare prescriptions for Xiidra, about the same volume as the typical Indiana prescriber of this medication (23). Medicare paid an average of $1,089.10 per fill, versus $1,089.87 statewide.

How often this provider prescribes it

This provider
21
IN average
23.0

This provider's prescribing volume for this medication is in line with the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$1,089.10
IN average
$1,089.87

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

32
30-Day Fills
standardized to 30-day supplies
960
Days of Medication
total across all patients in 2023

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 18 Medicare prescriptions for Doxycycline Hyclate, about 62% of the volume of the typical Indiana prescriber of this medication (29). Medicare paid an average of $76.20 per fill, versus $23.61 statewide.

How often this provider prescribes it

This provider
18
IN average
29.0

This provider prescribes this medication less often than the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$76.20
IN average
$23.61

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

35.5
30-Day Fills
standardized to 30-day supplies
1,030
Days of Medication
total across all patients in 2023

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 15 Medicare prescriptions for Cyclosporine, about the same volume as the typical Indiana prescriber of this medication (16). Medicare paid an average of $871.21 per fill, versus $613.58 statewide.

How often this provider prescribes it

This provider
15
IN average
16.0

This provider's prescribing volume for this medication is in line with the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$871.21
IN average
$613.58

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

35
30-Day Fills
standardized to 30-day supplies
1,035
Days of Medication
total across all patients in 2023

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 12 Medicare prescriptions for Valacyclovir, about 63% of the volume of the typical Indiana prescriber of this medication (19). Medicare paid an average of $60.72 per fill, versus $48.81 statewide.

How often this provider prescribes it

This provider
12
IN average
19.0

This provider prescribes this medication less often than the average IN prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$60.72
IN average
$48.81

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

12
30-Day Fills
standardized to 30-day supplies
317
Days of Medication
total across all patients in 2023
No medications match the current filters.
= the 5 medications this provider prescribes most. More than typical Typical Less than typical= prescription volume vs the average IN prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the IN average cost per fill.

About this data. The prescription history for DR. CHRISTA L WALLING 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 Greenfield, IN 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 IN prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.