David Y. Tsai, M.D.
Hospitalist (M.D.) in Mountain View, California, trained at Tufts University School of Medicine (class of 2009). 287 Medicare patients in 2024, $84,018 paid; nearly all of their 396 Part D prescriptions were generic (91%). Acadia Pharmaceuticals Inc reported $25.64 in payments in 2024, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1053683334 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 2, 2012 |
| Last updated in NPPES | Feb 25, 2021 |
| Certified by provider | Feb 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | A120477 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | David Chang-Chur Tsai · Surgery | 1128b4 | Nov 18, 1999 | San Diego, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 287 |
|---|---|
| Services billed | 906 across 7 procedure codes |
| Paid by Medicare | $84,018 |
Part D prescriptions in 2024
| Prescriptions (claims) | 396 · 472 30-day fills |
|---|---|
| Patients | 131 |
| Total drug cost | $23,594 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Hospitalist |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliation
- El Camino HealthMountain View, CA
Industry payments (Open Payments)
- 2024$25.64 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Acadia Pharmaceuticals Inc | $25.64 | 1 |
What the 2024 payments were for
- Food and Beverage$25.64 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 37 hospitalists in Mountain View · All hospitalists in California