MR. MARK ANTHONY PARKER PMHNP-BC
Prescription History 1710214721
Nurse Practitioner - Psychiatric/Mental Health in Sterling, VA
What does Mark Parker prescribe?
In 2024, Mark Parker wrote 18 Medicare prescriptions for 1 medication. The most prescribed was Venlafaxine Hcl Er (venlafaxine hcl), with 18 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 Mark Parker 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 Virginia prescribers.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety, panic attacks, and social anxiety disorder).
Compared with Virginia prescribers
Mark Parker wrote 18 prescriptions for Venlafaxine Hcl Er, about half as often as the typical Virginia prescriber of it (32). Medicare paid $7.24 per fill, versus $22.29 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Mark Parker’s prescriptions
What does Mark Parker prescribe most?
In 2024 Medicare Part D data, Mark Parker's most prescribed medication was Venlafaxine Hcl Er (18).
How does Mark Parker's prescribing compare with other Virginia prescribers?
Of the 1 medication with a state comparison, Mark Parker prescribes 1 less often than the typical Virginia prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Mark Parker 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 Virginia 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.
