DR. NANCY ANN HARRISON O.D.
Prescription History 1679618607
Optometrist in Corpus Christi, TX
What does Dr. Harrison prescribe?
In 2024, Dr. Harrison wrote 566 Medicare prescriptions for 11 medications. The most prescribed was Latanoprost, with 261 prescriptions for 115 patients.
Medicare Part D only. These are prescriptions filled by people with Medicare drug coverage in 2024, from the CMS data released in 2026, the most recent year available. CMS does not publish medications with fewer than 11 prescriptions, so this is not a full list of what Dr. Harrison prescribes.
Medications 11 medications
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other Texas prescribers.
What it is used for
Latanoprost is used to treat high pressure inside the eye due to glaucoma (open angle type) or other eye diseases (such as ocular hypertension).
Compared with Texas prescribers
Dr. Harrison wrote 261 prescriptions for Latanoprost, about 1.6 times as often as the typical Texas prescriber of it (162). Medicare paid $11.93 per fill, versus $10.84 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat open-angle glaucoma or high fluid pressure in the eye.
Compared with Texas prescribers
Dr. Harrison wrote 65 prescriptions for Brimonidine Tartrate, about 80% as often as the typical Texas prescriber of it (81). Medicare paid $5.96 per fill, versus $33.03 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
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).
Compared with Texas prescribers
Dr. Harrison wrote 55 prescriptions for Timolol Maleate, about 70% as often as the typical Texas prescriber of it (79). Medicare paid $10.03 per fill, versus $14.69 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
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).
Compared with Texas prescribers
Dr. Harrison wrote 44 prescriptions for Dorzolamide-Timolol, about 39% as often as the typical Texas prescriber of it (112). Medicare paid $15.09 per fill, versus $16.72 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Dorzolamide is used to treat high pressure inside the eye due to glaucoma (open angle-type) or other eye diseases (such as ocular hypertension).
Compared with Texas prescribers
Dr. Harrison wrote 42 prescriptions for Dorzolamide Hcl, about 73% as often as the typical Texas prescriber of it (58). Medicare paid $21.36 per fill, versus $20.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Bimatoprost is used to treat high pressure inside the eye due to glaucoma (open-angle type) or other eye diseases (such as ocular hypertension).
Compared with Texas prescribers
Dr. Harrison wrote 19 prescriptions for Lumigan, about 28% as often as the typical Texas prescriber of it (68). Medicare paid $390.42 per fill, versus $493.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a quinolone antibiotic used for eye infections.
Compared with Texas prescribers
Dr. Harrison wrote 19 prescriptions for Moxifloxacin, about 18% as often as the typical Texas prescriber of it (107). Medicare paid $30.75 per fill, versus $25.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Travoprost is used to treat high pressure inside the eye due to glaucoma (open-angle type) or other eye diseases (such as ocular hypertension).
Compared with Texas prescribers
Dr. Harrison wrote 18 prescriptions for Travoprost, about half as often as the typical Texas prescriber of it (35). Medicare paid $89.82 per fill, versus $157.03 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain eye conditions due to inflammation or injury.
Compared with Texas prescribers
Dr. Harrison wrote 17 prescriptions for Prednisolone Acetate, about 13% as often as the typical Texas prescriber of it (131). Medicare paid $34.42 per fill, versus $40.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Cyclosporine eye drops are used to treat a certain type of dry eyes.
Compared with Texas prescribers
Dr. Harrison wrote 14 prescriptions for Restasis, about 30% as often as the typical Texas prescriber of it (47). Medicare paid $1,128.55 per fill, versus $1,037.48 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This combination medication is used to treat high pressure inside the eye due to glaucoma (open-angle type) or other eye diseases (such as ocular hypertension).
Compared with Texas prescribers
Dr. Harrison wrote 12 prescriptions for Brimonidine Tartrate-Timolol, about 29% as often as the typical Texas prescriber of it (42). Medicare paid $180.65 per fill, versus $152.38 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Dr. Harrison’s prescriptions
What does Dr. Harrison prescribe most?
In 2024 Medicare Part D data, Dr. Harrison's most prescribed medications were Latanoprost (261), Brimonidine Tartrate (65) and Timolol Maleate (55).
How does Dr. Harrison's prescribing compare with other Texas prescribers?
Of the 11 medications with a state comparison, Dr. Harrison prescribes 1 more often than the typical Texas prescriber, 1 about as often and 9 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Harrison prescribes?
No. It covers prescriptions filled by people with Medicare Part D drug coverage in 2024, and CMS leaves out any medication with fewer than 11 prescriptions.
About this data
This page shows one provider’s slice of public Medicare files. NPI Profile does not receive prescriptions or patient records.
| Source | What it provides here | Data year |
|---|---|---|
| CMS Medicare Part D Prescribers by Provider and Drug | Each medication, prescriptions, patients, 30-day fills, days of medication and cost. State comparisons average the Texas prescribers of the same medication and form, where at least five wrote it. | 2024 (released 2026, the most recent available) |
| CMS Medicare Part D Drug Spending Dashboard | What each medication is used for. | 2024 |
- Only prescriptions filled by people with Medicare Part D drug coverage are counted. Private insurance, Medicaid and cash purchases are not.
- CMS leaves out medications with fewer than 11 prescriptions and hides patient counts under 11.
- Cost per fill is what the plan and the patient paid the pharmacy together, not what you pay at the counter.
- Medication descriptions are summaries from CMS. They are not medical advice; ask a health care professional about any medication.
