Andrew Chang, M.D.
NPI 1003808494ActiveIndividual· Ophthalmology· Northridge, CA
Ophthalmology (M.D.) in Northridge, California, trained at University of California, Geffen School of Medicine (class of 1986). In 2024 Medicare paid $137,267 for 700 patients, and Part D covered 3,022 of their prescriptions, 59% of them generic. Alcon Vision LLC was the largest of 8 companies reporting payments in 2025, $1,030 in all, mostly food and beverage.
Overview
| NPI | 1003808494 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 22, 2005 |
| Last updated in NPPES | Apr 25, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | G61183 | CA |
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 DME Supplier - Physician - Ophthalmology (CA); Practitioner - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 700 |
|---|---|
| Services billed | 1,524 across 19 procedure codes |
| Paid by Medicare | $137,267 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,022 · 4,394 30-day fills |
|---|---|
| Patients | 614 |
| Total drug cost | $199,054 |
| Generic share | 59% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Ophthalmology |
Hospital affiliation
- Lac/Olive View-Ucla Medical CenterSylmar, CA
Industry payments (Open Payments)
- 2025$1,030 · 25 payments from 8 companies
- 2024$483.92 · 11 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $442.73 | 8 |
| Tarsus Pharmaceuticals, Inc. | $212.67 | 8 |
| Stryker Corporation | $161.03 | 1 |
| Abbvie Inc. | $65.67 | 3 |
| Harrow Eye, LLC | $47.91 | 2 |
What the 2025 payments were for
- Food and Beverage$1,030 · 25 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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