Matthew Chang
NPI 1558940254ActiveIndividual· Ophthalmology· Loma Linda, CA
Ophthalmology in Loma Linda, California, trained at Loma Linda University School of Medicine (class of 2021). Enrolled in Medicare as practitioner - ophthalmology and practitioner - ophthalmology. Alcon Vision LLC was the largest of 4 companies reporting payments in 2025, $443.40 in all, mostly food and beverage.
Overview
| NPI | 1558940254 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 8, 2021 |
| Last updated in NPPES | Feb 4, 2026 |
| Certified by provider | Feb 4, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A181703 | CA |
| Ophthalmology | 207W00000X | TLL-2025-002 | GU |
| Ophthalmology | 207W00000X | MTL-2026-003 | GU |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (CA); Practitioner - Ophthalmology (GU) |
|---|
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Ophthalmology |
Medical groups
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
- General Conference Corp of SdaTamuning, GU · 51 clinicians
Hospital affiliation
- Loma Linda University Medical CenterLoma Linda, CA
Industry payments (Open Payments)
- 2025$443.40 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $186.70 | 5 |
| Sight Sciences, Inc. | $142.36 | 1 |
| Amgen Inc. | $84.45 | 1 |
| Ani Pharmaceuticals, Inc. | $29.89 | 1 |
What the 2025 payments were for
- Food and Beverage$443.40 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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