MARGARITA PENA MD
Prescription History 1104871565
Emergency Medicine in Southfield, MI
What does Dr. Pena prescribe?
In 2024, Dr. Pena wrote 12 Medicare prescriptions for 1 medication. The most prescribed was Famotidine, with 12 prescriptions.
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. Pena prescribes.
Medications 1 medication
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other Michigan prescribers.
What it is used for
Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed.
Compared with Michigan prescribers
Dr. Pena wrote 12 prescriptions for Famotidine, about 24% as often as the typical Michigan prescriber of it (51). Medicare paid $15.61 per fill, versus $16.24 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. Pena’s prescriptions
What does Dr. Pena prescribe most?
In 2024 Medicare Part D data, Dr. Pena's most prescribed medication was Famotidine (12).
How does Dr. Pena's prescribing compare with other Michigan prescribers?
Of the 1 medication with a state comparison, Dr. Pena prescribes 1 less often than the typical Michigan prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Pena 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 Michigan 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.
