Jennifer Chwen-Yin Lin, MD
NPI 1336342708ActiveIndividual· Internal Medicine· San Mateo, CA
Internal Medicine (MD) in San Mateo, California, trained at Duke University School of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $1,083,350 for 1,235 claims, against $5,572 paid for services in 2024.
Overview
| NPI | 1336342708 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 6, 2007 |
| Last updated in NPPES | Dec 21, 2023 |
| Certified by provider | Dec 21, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A111089 | CA |
| Internal Medicine | 207R00000X | MT190325 | PA |
| Internal Medicine | 207R00000X | MD437872 | PA |
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 | 19 |
|---|---|
| Services billed | 379 across 18 procedure codes |
| Paid by Medicare | $5,572 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,235 · 1,493 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $1,083,350 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Internal Medicine |
Medical group
- County of San MateoSan Mateo, CA · 310 clinicians
Hospital affiliation
- San Mateo Medical CenterSan Mateo, 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 55 internal medicine physicians in San Mateo · All internal medicine physicians in California