James Yen-Yu Chen, M.D.
Radiology, Neuroradiology (M.D.) in San Diego, California, licensed in CA, with an NPI issued in June 2007. Medicare paid $2,051 for services to 12 patients in 2024. Bayer Healthcare Pharmaceuticals Inc. reported $24.87 in payments in 2025, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1427250588 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 1, 2007 |
| Last updated in NPPES | Jul 10, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Neuroradiology Primary | 2085N0700X | A108635 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | James Shan Chen · Pharmacy | 1128a3 | May 20, 2021 | Herlong, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 - Diagnostic Radiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 296 across 10 procedure codes |
| Paid by Medicare | $2,051 |
Industry payments (Open Payments)
- 2025$24.87 · 1 payment from 1 company
- 2024$114.40 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $24.87 | 1 |
What the 2025 payments were for
- Food and Beverage$24.87 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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