Chung-Ying Amanda Chen, MD
NPI 1457436081ActiveIndividual· Internal Medicine· Sunnyvale, CA
Internal Medicine (MD) in Sunnyvale, California, trained at Indiana University School of Medicine (class of 1999). 125 Medicare patients in 2024, $23,123 paid; nearly all of their 651 Part D prescriptions were generic (93%).
Overview
| NPI | 1457436081 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2006 |
| Last updated in NPPES | Nov 28, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A94535 | CA |
| Pediatrics | 208000000X | A94535 | CA |
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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 125 |
|---|---|
| Services billed | 249 across 18 procedure codes |
| Paid by Medicare | $23,123 |
Part D prescriptions in 2024
| Prescriptions (claims) | 651 · 1,467 30-day fills |
|---|---|
| Patients | 102 |
| Total drug cost | $31,704 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Indiana University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Family Practice |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 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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