Ashley Shiyuan Chang, PA-C
NPI 1487289625ActiveIndividual· Physician Assistant· Stanford, CA
Physician Assistant (PA-C) with Stanford Health Care, practicing in Stanford, California. Their prescriptions cost Medicare Part D more than their services did: $418,814 for 607 claims, against $24,904 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2024, $140.94 in all, mostly food and beverage. Lists Stanford Health Care as a hospital affiliation.
Overview
| NPI | 1487289625 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Mar 9, 2020 |
| Last updated in NPPES | Dec 23, 2025 |
| Certified by provider | Dec 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 57792 | CA |
| Physician Assistant, Surgical | 363AS0400X | 57792 | 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 | 145 |
|---|---|
| Services billed | 246 across 8 procedure codes |
| Paid by Medicare | $24,904 |
Part D prescriptions in 2024
| Prescriptions (claims) | 607 · 874 30-day fills |
|---|---|
| Patients | 128 |
| Total drug cost | $418,814 |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2024$140.94 · 2 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $123.39 | 1 |
| Ethicon US, LLC | $17.55 | 1 |
What the 2024 payments were for
- Food and Beverage$140.94 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Physician Assistant providers in Stanford
- 1114160967
- 1700507571
- 1366926388
- 1134964372
- 1699134254
- 1518584408
- 1841079282
- 1316125263
- 1083063598
- 1508118472
- 1225275761
- 1760901763