Yiann E. Chen, MD
NPI 1891912689ActiveIndividual· Internal Medicine, Nephrology· Oakland, CA
Internal Medicine, Nephrology (MD) in Oakland, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $61,889 for 565 claims, against $9,546 paid for services in 2024.
Overview
| NPI | 1891912689 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 20, 2007 |
| Last updated in NPPES | Dec 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A100448 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 42 |
|---|---|
| Services billed | 114 across 15 procedure codes |
| Paid by Medicare | $9,546 |
Part D prescriptions in 2024
| Prescriptions (claims) | 565 · 1,556 30-day fills |
|---|---|
| Patients | 146 |
| Total drug cost | $61,889 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
Other facilities
- Davita Alvarado Park Home TrainingDialysis facility · San Pablo, CA
- Davita El Cerrito DialysisDialysis facility · El Cerrito, 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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