FLORENCE IDA HSU M.D.
Prescription History 1205894607
Internal Medicine - Allergy & Immunology in North Haven, CT
What does Dr. Hsu prescribe?
In 2024, Dr. Hsu wrote 162 Medicare prescriptions for 5 medications. The most prescribed was Oxycodone Hcl, with 61 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. Hsu 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 Connecticut prescribers.
What it is used for
This medication is used to help relieve moderate to severe pain.
Compared with Connecticut prescribers
Dr. Hsu wrote 61 prescriptions for Oxycodone Hcl, about as often as the typical Connecticut prescriber of it (54). Medicare paid $7.42 per fill, versus $14.32 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
This medication is used to treat the swelling problems that occur with a certain immune disease passed down through families (hereditary angioedema-HAE).
Compared with Connecticut prescribers
Fewer than five Connecticut prescribers wrote this medication, so there is no state comparison.
What it is used for
This medication is used to help prevent swelling and painful attacks caused by a certain inherited disease (hereditary angioedema-HAE).
Compared with Connecticut prescribers
Fewer than five Connecticut prescribers wrote this medication, so there is no state comparison.
What it is used for
Hydroxyzine is used to treat itching caused by allergies.
Compared with Connecticut prescribers
Dr. Hsu wrote 16 prescriptions for Hydroxyzine Hcl, about half as often as the typical Connecticut prescriber of it (29). Medicare paid $8.00 per fill, versus $17.65 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 strengthen the body's natural defense system (immune system) to lower the risk of infection in persons with a weakened immune system.
Compared with Connecticut prescribers
Dr. Hsu wrote 15 prescriptions for Privigen, about half as often as the typical Connecticut prescriber of it (33). Medicare paid $4,058.28 per fill, versus $10,141.66 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. Hsu’s prescriptions
What does Dr. Hsu prescribe most?
In 2024 Medicare Part D data, Dr. Hsu's most prescribed medications were Oxycodone Hcl (61), Berinert (48) and Haegarda (22).
How does Dr. Hsu's prescribing compare with other Connecticut prescribers?
Of the 3 medications with a state comparison, Dr. Hsu prescribes 1 about as often than the typical Connecticut prescriber and 2 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Hsu 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 Connecticut 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.
