ARIEL LOPEZ-CHAVEZ M.D., M.S.
Prescription History 1871786913
Internal Medicine - Medical Oncology in Pittsburgh, PA
What does Dr. Lopez-Chavez prescribe?
In 2024, Dr. Lopez-Chavez wrote 50 Medicare prescriptions for 3 medications. The most prescribed was Prochlorperazine Maleate, with 25 prescriptions for 18 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. Lopez-Chavez prescribes.
Medications 3 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 Pennsylvania prescribers.
What it is used for
This medication is used to treat severe nausea and vomiting from certain causes (for example, after surgery or cancer treatment).
Compared with Pennsylvania prescribers
Dr. Lopez-Chavez wrote 25 prescriptions for Prochlorperazine Maleate, about 81% as often as the typical Pennsylvania prescriber of it (31). Medicare paid $11.71 per fill, versus $15.22 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
Dexamethasone is used to treat conditions such as arthritis, blood/hormone disorders, allergic reactions, skin diseases, eye problems, breathing problems, bowel disorders, cancer, and immune system disorders.
Compared with Pennsylvania prescribers
Dr. Lopez-Chavez wrote 14 prescriptions for Dexamethasone, about 42% as often as the typical Pennsylvania prescriber of it (34). Medicare paid $15.15 per fill, versus $11.95 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 lung cancer.
Compared with Pennsylvania prescribers
Dr. Lopez-Chavez wrote 11 prescriptions for Tagrisso, about half as often as the typical Pennsylvania prescriber of it (23). Medicare paid $14,978.17 per fill, versus $16,850.50 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. Lopez-Chavez’s prescriptions
What does Dr. Lopez-Chavez prescribe most?
In 2024 Medicare Part D data, Dr. Lopez-Chavez's most prescribed medications were Prochlorperazine Maleate (25), Dexamethasone (14) and Tagrisso (11).
How does Dr. Lopez-Chavez's prescribing compare with other Pennsylvania prescribers?
Of the 3 medications with a state comparison, Dr. Lopez-Chavez prescribes 1 about as often than the typical Pennsylvania prescriber and 2 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Lopez-Chavez 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 Pennsylvania 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.
