David Wei-Yun Chiang, MD
NPI 1891150686ActiveIndividual· Family Medicine· Santa Clara, CA
Family Medicine (MD) in Santa Clara, California, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2014). Part D covered 3,305 prescriptions written in 2024, 91% of them generic.
Overview
| NPI | 1891150686 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Dec 21, 2015 |
| Last updated in NPPES | Jul 25, 2022 |
| Certified by provider | Jul 25, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 036.147107 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 3,305 · 8,538 30-day fills |
|---|---|
| Patients | 676 |
| Total drug cost | $187,566 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Family Practice |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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