Nicholas Tieu, PA-C
NPI 1265203889ActiveIndividual· Physician Assistant· Palo Alto, CA
Physician Assistant (PA-C) with Sutter Bay Medical Foundation, practicing in Palo Alto, California. In 2024 Medicare paid $9,897 for 107 patients, and Part D covered 64 of their prescriptions, 89% of them generic. Daiichi Sankyo Inc. was the largest of 26 companies reporting payments in 2025, $3,098 in all, mostly food and beverage.
Overview
| NPI | 1265203889 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jan 11, 2024 |
| Last updated in NPPES | May 6, 2026 |
| Certified by provider | May 6, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA67875 | 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 - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 107 |
|---|---|
| Services billed | 587 across 32 procedure codes |
| Paid by Medicare | $9,897 |
Part D prescriptions in 2024
| Prescriptions (claims) | 64 · 73 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $7,323 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Industry payments (Open Payments)
- 2025$3,098 · 173 payments from 26 companies
- 2024$1,654 · 76 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $577.43 | 58 |
| Exelixis Inc. | $298.34 | 10 |
| Astrazeneca Pharmaceuticals LP | $294.32 | 15 |
| Beone Medicines USA, Inc. | $234.61 | 4 |
| Novartis Pharmaceuticals Corporation | $163.48 | 7 |
What the 2025 payments were for
- Food and Beverage$3,028 · 172 payments
- Education$70.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 158 physician assistants in Palo Alto · All physician assistants in California