Thomas Tsongming Hsu, MD
NPI 1134153372ActiveIndividual· Internal Medicine· Cupertino, CA
Internal Medicine (MD) in Cupertino, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $135,098 for 2,879 claims, against $31,071 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. reported $116.44 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1134153372 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 11, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A41255 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 151 |
|---|---|
| Services billed | 357 across 10 procedure codes |
| Paid by Medicare | $31,071 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,879 · 6,935 30-day fills |
|---|---|
| Patients | 310 |
| Total drug cost | $135,098 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1977 |
|---|---|
| Medicare specialty | Internal Medicine |
Industry payments (Open Payments)
- 2025$116.44 · 1 payment from 1 company
- 2024$122.10 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $116.44 | 1 |
What the 2025 payments were for
- Food and Beverage$116.44 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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