Eileen Yuan Chang
NPI 1376746644ActiveIndividual· Emergency Medicine· Torrance, CA
Emergency Medicine in Torrance, California, trained at Northwestern University Feinberg Medical School (class of 2005). 350 Medicare patients in 2024, $48,607 paid; nearly all of their 546 Part D prescriptions were generic (96%). E.R. Squibb & Sons, L.L.C. reported $24.71 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1376746644 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jun 6, 2007 |
| Last updated in NPPES | Aug 6, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A111171 | CA |
| Emergency Medicine | 207P00000X | 224652 | MA |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 350 |
|---|---|
| Services billed | 455 across 26 procedure codes |
| Paid by Medicare | $48,607 |
Part D prescriptions in 2024
| Prescriptions (claims) | 546 · 564 30-day fills |
|---|---|
| Patients | 251 |
| Total drug cost | $10,895 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Emergency Medicine |
Medical group
- Torrance Emergency Physicians IncTorrance, CA · 22 clinicians
Hospital affiliation
- Torrance Memorial Medical CenterTorrance, CA
Industry payments (Open Payments)
- 2025$24.71 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $24.71 | 1 |
What the 2025 payments were for
- Food and Beverage$24.71 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 199 emergency medicine physicians in Torrance · All emergency medicine physicians in California