MR. MICHAEL O'BRIEN PA-C
Prescription History 1801090121
Physician Assistant - Medical in Orlando, FL
What does Michael O'Brien prescribe?
In 2024, Michael O'Brien wrote 84 Medicare prescriptions for 5 medications. The most prescribed was Amiodarone Hcl, with 19 prescriptions for 17 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 Michael O'Brien prescribes.
Medications 5 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 Florida prescribers.
What it is used for
This medication is used to treat certain types of serious (possibly fatal) irregular heartbeat (such as recurrent ventricular fibrillation/tachycardia).
Compared with Florida prescribers
Michael O'Brien wrote 19 prescriptions for Amiodarone Hcl, about half as often as the typical Florida prescriber of it (35). Medicare paid $8.11 per fill, versus $27.52 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with Florida prescribers
Michael O'Brien wrote 19 prescriptions for Metoprolol Tartrate, about 27% as often as the typical Florida prescriber of it (71). Medicare paid $7.66 per fill, versus $6.69 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
Atorvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with Florida prescribers
Michael O'Brien wrote 16 prescriptions for Atorvastatin Calcium, about 8% as often as the typical Florida prescriber of it (197). Medicare paid $8.62 per fill, versus $9.21 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 mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with Florida prescribers
Michael O'Brien wrote 16 prescriptions for Potassium Chloride, about 30% as often as the typical Florida prescriber of it (54). Medicare paid $12.20 per fill, versus $19.72 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
Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with Florida prescribers
Michael O'Brien wrote 14 prescriptions for Furosemide, about 20% as often as the typical Florida prescriber of it (69). Medicare paid $5.46 per fill, versus $4.78 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Michael O'Brien’s prescriptions
What does Michael O'Brien prescribe most?
In 2024 Medicare Part D data, Michael O'Brien's most prescribed medications were Amiodarone Hcl (19), Metoprolol Tartrate (19) and Atorvastatin Calcium (16).
How does Michael O'Brien's prescribing compare with other Florida prescribers?
Of the 5 medications with a state comparison, Michael O'Brien prescribes 5 less often than the typical Florida prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Michael 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 Florida 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.
