MARK LAYER M.D.
Prescription History 1033539655
Emergency Medicine in Boston, MA
What does Dr. Layer prescribe?
In 2024, Dr. Layer wrote 56 Medicare prescriptions for 4 medications. The most prescribed was Cefpodoxime Proxetil, with 21 prescriptions for 21 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. Layer prescribes.
Medications 4 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
This medication is used to treat a wide variety of bacterial infections.
Compared with Massachusetts prescribers
Dr. Layer wrote 21 prescriptions for Cefpodoxime Proxetil, about 87% as often as the typical Massachusetts prescriber of it (24). Medicare paid $33.77 per fill, versus $39.82 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
Azithromycin is used to treat a wide variety of bacterial infections.
Compared with Massachusetts prescribers
Dr. Layer wrote 12 prescriptions for Azithromycin, about 40% as often as the typical Massachusetts prescriber of it (30). Medicare paid $3.91 per fill, versus $5.64 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 alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy.
Compared with Massachusetts prescribers
Dr. Layer wrote 12 prescriptions for Ondansetron Odt, about half as often as the typical Massachusetts prescriber of it (22). Medicare paid $6.81 per fill, versus $15.13 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
Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders.
Compared with Massachusetts prescribers
Dr. Layer wrote 11 prescriptions for Prednisone, about 25% as often as the typical Massachusetts prescriber of it (44). Medicare paid $2.08 per fill, versus $4.60 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. Layer’s prescriptions
What does Dr. Layer prescribe most?
In 2024 Medicare Part D data, Dr. Layer's most prescribed medications were Cefpodoxime Proxetil (21), Azithromycin (12) and Ondansetron Odt (12).
How does Dr. Layer's prescribing compare with other Massachusetts prescribers?
Of the 4 medications with a state comparison, Dr. Layer prescribes 1 about as often than the typical Massachusetts prescriber and 3 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Layer 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.
