CALLAN MARCUS APN
Prescription History 1144692021
Nurse Practitioner in Naperville, IL
What does Callan Marcus prescribe?
In 2024, Callan Marcus wrote 24 Medicare prescriptions for 1 medication. The most prescribed was Atorvastatin Calcium, with 24 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 Callan Marcus 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 Illinois prescribers.
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 Illinois prescribers
Callan Marcus wrote 24 prescriptions for Atorvastatin Calcium, about 12% as often as the typical Illinois prescriber of it (208). Medicare paid $3.96 per fill, versus $9.37 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Callan Marcus’s prescriptions
What does Callan Marcus prescribe most?
In 2024 Medicare Part D data, Callan Marcus's most prescribed medication was Atorvastatin Calcium (24).
How does Callan Marcus's prescribing compare with other Illinois prescribers?
Of the 1 medication with a state comparison, Callan Marcus prescribes 1 less often than the typical Illinois prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Callan Marcus 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 Illinois 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.
