Florence Ida Hsu, M.D.
NPI 1205894607ActiveIndividual· Internal Medicine, Allergy & Immunology· North Haven, CT
Internal Medicine, Allergy & Immunology (M.D.) in North Haven, Connecticut, trained at Columbia University College of Physicians and Surgeons (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $3,089,245 for 234 claims, against $4,644 paid for services in 2024. Csl Behring was the largest of 3 companies reporting payments in 2025, $18,866 in all, mostly speaking and faculty fees.
Overview
| NPI | 1205894607 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 3, 2006 |
| Last updated in NPPES | Jun 15, 2020 |
| Certified by provider | Jun 15, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Allergy & Immunology Primary | 207RA0201X | 49738 | CT |
| Allergy & Immunology | 207K00000X | 49738 | CT |
| Allergy & Immunology | 207K00000X | 217989 | MA |
| Internal Medicine, Allergy & Immunology | 207RA0201X | 217989 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 36 |
|---|---|
| Services billed | 114 across 9 procedure codes |
| Paid by Medicare | $4,644 |
Part D prescriptions in 2024
| Prescriptions (claims) | 234 · 261 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $3,089,245 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | Columbia University College of Physicians and Surgeons |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Allergy/Immunology |
| Telehealth | Offers telehealth |
Medical group
- Yale UniversityNew Haven, CT · 2,645 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$18,866 · 12 payments from 3 companies
- 2024$12,515 · 12 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Csl Behring | $14,419 | 10 |
| Biocryst Pharmaceuticals, Inc. | $2,660 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $1,788 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$14,419 · 10 payments
- Consulting Fee$4,447 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records