Teresa Hsiao-Tien Chen, MD
NPI 1679034367ActiveIndividual· Ophthalmology· Irvine, CA
Ophthalmology (MD) in Irvine, California, trained at Washington University School of Medicine (class of 2019). 73 Medicare patients in 2024, $15,040 paid; nearly all of their 615 Part D prescriptions were generic (92%). Amgen Inc. was the largest of 2 companies reporting payments in 2025, $124.71 in all, mostly food and beverage.
Overview
| NPI | 1679034367 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 26, 2019 |
| Last updated in NPPES | Feb 7, 2025 |
| Certified by provider | Feb 7, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A179524 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 73 |
|---|---|
| Services billed | 109 across 38 procedure codes |
| Paid by Medicare | $15,040 |
Part D prescriptions in 2024
| Prescriptions (claims) | 615 · 633 30-day fills |
|---|---|
| Patients | 399 |
| Total drug cost | $8,624 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Ophthalmology |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Industry payments (Open Payments)
- 2025$124.71 · 2 payments from 2 companies
- 2024$149.42 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $78.80 | 1 |
| Merz Pharmaceuticals, LLC | $45.91 | 1 |
What the 2025 payments were for
- Food and Beverage$124.71 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 48 ophthalmologists in Irvine · All ophthalmologists in California