DR. MARK K ARNESS M.D.
Prescription History 1831114115
Preventive Medicine - Preventive Medicine/Occupational Environmental Medicine in Colonial Beach, VA
What does Dr. Arness prescribe?
In 2024, Dr. Arness wrote 75 Medicare prescriptions for 5 medications. The most prescribed was Donepezil Hcl, with 17 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. Arness 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 Virginia prescribers.
What it is used for
Donepezil is used to treat confusion (dementia) related to Alzheimer's disease.
Compared with Virginia prescribers
Dr. Arness wrote 17 prescriptions for Donepezil Hcl, about 32% as often as the typical Virginia prescriber of it (53). Medicare paid $12.40 per fill, versus $13.84 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
Pravastatin 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 Virginia prescribers
Dr. Arness wrote 16 prescriptions for Pravastatin Sodium, about 30% as often as the typical Virginia prescriber of it (53). Medicare paid $13.35 per fill, versus $11.34 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 certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder, post-traumatic stress disorder, social anxiety disorder).
Compared with Virginia prescribers
Dr. Arness wrote 16 prescriptions for Sertraline Hcl, about 27% as often as the typical Virginia prescriber of it (59). Medicare paid $11.98 per fill, versus $9.17 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
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with Virginia prescribers
Dr. Arness wrote 15 prescriptions for Tamsulosin Hcl, about 19% as often as the typical Virginia prescriber of it (80). Medicare paid $11.06 per fill, versus $13.52 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with Virginia prescribers
Dr. Arness wrote 11 prescriptions for Pantoprazole Sodium, about 15% as often as the typical Virginia prescriber of it (71). Medicare paid $16.41 per fill, versus $12.72 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. Arness’s prescriptions
What does Dr. Arness prescribe most?
In 2024 Medicare Part D data, Dr. Arness's most prescribed medications were Donepezil Hcl (17), Pravastatin Sodium (16) and Sertraline Hcl (16).
How does Dr. Arness's prescribing compare with other Virginia prescribers?
Of the 5 medications with a state comparison, Dr. Arness prescribes 5 less often than the typical Virginia prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Arness 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.
