DOYUN PARK M.D.
Prescription History 1982984258
Internal Medicine - Hematology in Springfield, MA
What does Dr. Park prescribe?
In 2024, Dr. Park wrote 129 Medicare prescriptions for 5 medications. The most prescribed was Hydroxyurea, with 54 prescriptions for 15 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. Park 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 Massachusetts prescribers.
What it is used for
This medication is used by people with sickle cell anemia to reduce the number of painful crises caused by the disease and to reduce the need for blood transfusions.
Compared with Massachusetts prescribers
Dr. Park wrote 54 prescriptions for Hydroxyurea, about 1.5 times as often as the typical Massachusetts prescriber of it (35). Medicare paid $28.62 per fill, versus $26.17 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
Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery.
Compared with Massachusetts prescribers
Dr. Park wrote 33 prescriptions for Eliquis, about 38% as often as the typical Massachusetts prescriber of it (88). Medicare paid $650.90 per fill, versus $852.50 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
Valacyclovir is used to treat infections caused by certain types of viruses.
Compared with Massachusetts prescribers
Dr. Park wrote 16 prescriptions for Valacyclovir, about 73% as often as the typical Massachusetts prescriber of it (22). Medicare paid $41.55 per fill, versus $29.55 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
Acyclovir is used to treat infections caused by certain types of viruses.
Compared with Massachusetts prescribers
Dr. Park wrote 13 prescriptions for Acyclovir, about half as often as the typical Massachusetts prescriber of it (28). Medicare paid $16.77 per fill, versus $17.16 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 types of cancer (such as acute lymphoblastic leukemia, chronic myeloid leukemia, gastrointestinal stromal tumors, and myelodysplastic/myeloproliferative diseases).
Compared with Massachusetts prescribers
Dr. Park wrote 13 prescriptions for Imatinib Mesylate, about half as often as the typical Massachusetts prescriber of it (24). Medicare paid $92.80 per fill, versus $1,594.58 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. Park’s prescriptions
What does Dr. Park prescribe most?
In 2024 Medicare Part D data, Dr. Park's most prescribed medications were Hydroxyurea (54), Eliquis (33) and Valacyclovir (16).
How does Dr. Park's prescribing compare with other Massachusetts prescribers?
Of the 5 medications with a state comparison, Dr. Park prescribes 1 more often than the typical Massachusetts prescriber and 4 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Park 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.
