Chwen-Yuen Angie Chen, MD
NPI 1114100476ActiveIndividual· Internal Medicine· Stanford, CA
Internal Medicine (MD) in Stanford, California, trained at University of California, Davis School of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $55,329 for 575 claims, against $26,432 paid for services in 2024.
Overview
| NPI | 1114100476 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 10, 2007 |
| Last updated in NPPES | Apr 18, 2024 |
| Certified by provider | Apr 18, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A96914 | CA |
| Preventive Medicine, Addiction Medicine | 2083A0300X | A96914 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 40 |
|---|---|
| Services billed | 241 across 7 procedure codes |
| Paid by Medicare | $26,432 |
Part D prescriptions in 2024
| Prescriptions (claims) | 575 · 783 30-day fills |
|---|---|
| Patients | 34 |
| Total drug cost | $55,329 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Addiction Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
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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All 394 internal medicine physicians in Stanford · All internal medicine physicians in California