Tan M. Chen, MD
NPI 1477693927ActiveIndividual· Internal Medicine· Fresno, CA
Internal Medicine (MD) with Permanente Medical Group Inc, practicing in Fresno, California. Part D covered 560 prescriptions written in 2024, 86% of them generic. Lists Kaiser Foundation Hospital - Fresno as a hospital affiliation.
Overview
| NPI | 1477693927 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 7, 2007 |
| Last updated in NPPES | Dec 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A96579 | 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 - General Practice (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 560 · 1,029 30-day fills |
|---|---|
| Patients | 246 |
| Total drug cost | $27,139 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | General Practice |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - FresnoFresno, 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 428 internal medicine physicians in Fresno · All internal medicine physicians in California