MARGARET E THREADGILL MD,MBA
Prescription History 1548610421
Internal Medicine in Boston, MA
What does Dr. Threadgill prescribe?
In 2024, Dr. Threadgill wrote 294 Medicare prescriptions for 15 medications. The most prescribed was Atorvastatin Calcium, with 52 prescriptions for 13 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. Threadgill prescribes.
Medications 15 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 Massachusetts 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 Massachusetts prescribers
Dr. Threadgill wrote 52 prescriptions for Atorvastatin Calcium, about 28% as often as the typical Massachusetts prescriber of it (188). Medicare paid $12.85 per fill, versus $13.82 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with Massachusetts prescribers
Dr. Threadgill wrote 31 prescriptions for Amlodipine Besylate, about 25% as often as the typical Massachusetts prescriber of it (126). Medicare paid $5.39 per fill, versus $7.46 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
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with Massachusetts prescribers
Dr. Threadgill wrote 25 prescriptions for Omeprazole, about 26% as often as the typical Massachusetts prescriber of it (97). Medicare paid $13.80 per fill, versus $15.75 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with Massachusetts prescribers
Dr. Threadgill wrote 23 prescriptions for Levothyroxine Sodium, about 19% as often as the typical Massachusetts prescriber of it (123). Medicare paid $8.16 per fill, versus $10.45 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 Massachusetts prescribers
Dr. Threadgill wrote 23 prescriptions for Metoprolol Succinate, about 21% as often as the typical Massachusetts prescriber of it (112). Medicare paid $17.26 per fill, versus $18.15 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
Lisinopril is used to treat high blood pressure.
Compared with Massachusetts prescribers
Dr. Threadgill wrote 20 prescriptions for Lisinopril, about 16% as often as the typical Massachusetts prescriber of it (123). Medicare paid $4.87 per fill, versus $8.13 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
Fluticasone is used to relieve seasonal and year-round allergic and non-allergic nasal symptoms, such as stuffy/runny nose, itching, and sneezing.
Compared with Massachusetts prescribers
Dr. Threadgill wrote 17 prescriptions for Fluticasone Propionate, about 38% as often as the typical Massachusetts prescriber of it (44). Medicare paid $25.83 per fill, versus $16.98 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
Levetiracetam is used to treat seizures (epilepsy).
Compared with Massachusetts prescribers
Dr. Threadgill wrote 15 prescriptions for Levetiracetam, about 29% as often as the typical Massachusetts prescriber of it (51). Medicare paid $8.31 per fill, versus $31.32 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
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with Massachusetts prescribers
Dr. Threadgill wrote 14 prescriptions for Ezetimibe, about 34% as often as the typical Massachusetts prescriber of it (41). Medicare paid $2.36 per fill, versus $40.52 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with Massachusetts prescribers
Dr. Threadgill wrote 14 prescriptions for Metformin Hcl, about 19% as often as the typical Massachusetts prescriber of it (73). Medicare paid $5.39 per fill, versus $9.67 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
Albuterol (also known as salbutamol) is used to prevent and treat wheezing and shortness of breath caused by breathing problems (such as asthma, chronic obstructive pulmonary disease).
Compared with Massachusetts prescribers
Dr. Threadgill wrote 14 prescriptions for Ventolin Hfa, about half as often as the typical Massachusetts prescriber of it (32). Medicare paid $61.14 per fill, versus $66.79 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 Massachusetts prescribers
Dr. Threadgill wrote 12 prescriptions for Pravastatin Sodium, about 26% as often as the typical Massachusetts prescriber of it (45). Medicare paid $3.74 per fill, versus $19.59 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
Rizatriptan is used to treat migraines.
Compared with Massachusetts prescribers
Dr. Threadgill wrote 12 prescriptions for Rizatriptan, about half as often as the typical Massachusetts prescriber of it (28). Medicare paid $21.44 per fill, versus $17.34 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 a variety of skin conditions (such as eczema, dermatitis, allergies, rash).
Compared with Massachusetts prescribers
Dr. Threadgill wrote 11 prescriptions for Betamethasone Diprop Augmented, about 26% as often as the typical Massachusetts prescriber of it (42). Medicare paid $13.60 per fill, versus $47.52 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
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with Massachusetts prescribers
Dr. Threadgill wrote 11 prescriptions for Ozempic, about 22% as often as the typical Massachusetts prescriber of it (51). Medicare paid $1,025.59 per fill, versus $1,217.01 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. Threadgill’s prescriptions
What does Dr. Threadgill prescribe most?
In 2024 Medicare Part D data, Dr. Threadgill's most prescribed medications were Atorvastatin Calcium (52), Amlodipine Besylate (31) and Omeprazole (25).
How does Dr. Threadgill's prescribing compare with other Massachusetts prescribers?
Of the 15 medications with a state comparison, Dr. Threadgill prescribes 15 less often than the typical Massachusetts prescriber. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Threadgill 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 Massachusetts 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.
