DR. PENELOPE LYNN VACHON DNP
Prescription History 1326342239
Nurse Practitioner - Primary Care in Charleston, SC
What does Dr. Vachon prescribe?
In 2024, Dr. Vachon wrote 78 Medicare prescriptions for 5 medications. The most prescribed was Levothyroxine Sodium, with 20 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. Vachon 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 South Carolina prescribers.
What it is used for
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with South Carolina prescribers
Dr. Vachon wrote 20 prescriptions for Levothyroxine Sodium, about 13% as often as the typical South Carolina prescriber of it (152). Medicare paid $5.04 per fill, versus $10.28 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
Liothyronine is used to treat an underactive thyroid (hypothyroidism).
Compared with South Carolina prescribers
Dr. Vachon wrote 17 prescriptions for Liothyronine Sodium, about half as often as the typical South Carolina prescriber of it (29). Medicare paid $20.98 per fill, versus $41.08 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 high blood pressure.
Compared with South Carolina prescribers
Dr. Vachon wrote 16 prescriptions for Hydrochlorothiazide, about 20% as often as the typical South Carolina prescriber of it (81). Medicare paid $2.87 per fill, versus $4.02 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 a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with South Carolina prescribers
Dr. Vachon wrote 14 prescriptions for Metoprolol Succinate, about 13% as often as the typical South Carolina prescriber of it (107). Medicare paid $7.86 per fill, versus $13.83 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 a hormone.
Compared with South Carolina prescribers
Dr. Vachon wrote 11 prescriptions for Estradiol, about 29% as often as the typical South Carolina prescriber of it (38). Medicare paid $64.19 per fill, versus $43.72 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. Vachon’s prescriptions
What does Dr. Vachon prescribe most?
In 2024 Medicare Part D data, Dr. Vachon's most prescribed medications were Levothyroxine Sodium (20), Liothyronine Sodium (17) and Hydrochlorothiazide (16).
How does Dr. Vachon's prescribing compare with other South Carolina prescribers?
Of the 5 medications with a state comparison, Dr. Vachon prescribes 5 less often than the typical South Carolina prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Vachon 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 South Carolina 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.
