KATIE BROUILLARD O'BRIEN NP
Prescription History 1801048921
Dermatology in Worcester, MA
What does Katie O'Brien prescribe?
In 2024, Katie O'Brien wrote 356 Medicare prescriptions for 10 medications. The most prescribed was Ketoconazole, with 98 prescriptions for 37 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 Katie O'Brien prescribes.
Medications 10 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 Massachusetts prescribers.
What it is used for
Ketoconazole is used to treat skin infections such as athlete's foot, jock itch, ringworm, and certain kinds of dandruff.
Compared with Massachusetts prescribers
Katie O'Brien wrote 98 prescriptions for Ketoconazole, about 2.2 times as often as the typical Massachusetts prescriber of it (45). Medicare paid $19.29 per fill, versus $19.09 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 a variety of skin conditions (such as eczema, psoriasis, dermatitis, allergies, rash).
Compared with Massachusetts prescribers
Katie O'Brien wrote 58 prescriptions for Clobetasol Propionate, about 1.7 times as often as the typical Massachusetts prescriber of it (35). Medicare paid $40.80 per fill, versus $68.05 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
Metronidazole is an antibiotic that is used to treat a wide variety of infections.
Compared with Massachusetts prescribers
Katie O'Brien wrote 49 prescriptions for Metronidazole, about 1.8 times as often as the typical Massachusetts prescriber of it (28). Medicare paid $48.71 per fill, versus $36.70 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 a variety of skin conditions (such as eczema, dermatitis, allergies, rash).
Compared with Massachusetts prescribers
Katie O'Brien wrote 46 prescriptions for Triamcinolone Acetonide, about 1.3 times as often as the typical Massachusetts prescriber of it (35). Medicare paid $11.20 per fill, versus $10.62 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 a certain type of arthritis (psoriatic arthritis).
Compared with Massachusetts prescribers
Katie O'Brien wrote 25 prescriptions for Otezla, about as often as the typical Massachusetts prescriber of it (25). Medicare paid $4,675.53 per fill, versus $4,681.43 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 on the skin to treat pre-cancerous and cancerous skin growths.
Compared with Massachusetts prescribers
Katie O'Brien wrote 18 prescriptions for Fluorouracil, about 39% as often as the typical Massachusetts prescriber of it (47). Medicare paid $35.67 per fill, versus $55.91 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
Nystatin is used to treat fungal skin infections.
Compared with Massachusetts prescribers
Katie O'Brien wrote 18 prescriptions for Nystatin, about 76% as often as the typical Massachusetts prescriber of it (24). Medicare paid $15.78 per fill, versus $18.05 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
This medication is used to treat a variety of skin conditions (such as eczema, dermatitis, allergies, rash).
Compared with Massachusetts prescribers
Katie O'Brien wrote 16 prescriptions for Betamethasone Dipropionate, about half as often as the typical Massachusetts prescriber of it (33). Medicare paid $34.14 per fill, versus $41.75 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 a variety of skin conditions (such as insect bites, poison oak/ivy, eczema, dermatitis, allergies, rash, itching of the outer female genitals, anal itching).
Compared with Massachusetts prescribers
Katie O'Brien wrote 15 prescriptions for Hydrocortisone, about half as often as the typical Massachusetts prescriber of it (27). Medicare paid $8.49 per fill, versus $15.44 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 plaque psoriasis and psoriatic arthritis.
Compared with Massachusetts prescribers
Katie O'Brien wrote 13 prescriptions for Skyrizi Pen, about 74% as often as the typical Massachusetts prescriber of it (17). Medicare paid $19,861.65 per fill, versus $20,448.04 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Katie O'Brien’s prescriptions
What does Katie O'Brien prescribe most?
In 2024 Medicare Part D data, Katie O'Brien's most prescribed medications were Ketoconazole (98), Clobetasol Propionate (58) and Metronidazole (49).
How does Katie O'Brien's prescribing compare with other Massachusetts prescribers?
Of the 10 medications with a state comparison, Katie O'Brien prescribes 4 more often than the typical Massachusetts prescriber, 2 about as often and 4 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Katie O'Brien 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 Massachusetts 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.
