Eric H. Chan, M.D.
NPI 1427443316ActiveIndividual· Ophthalmology, Glaucoma Specialist· Riverside, CA
Ophthalmology, Glaucoma Specialist (M.D.) in Riverside, California, trained at University of California, Geffen School of Medicine (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $285,414 for 5,352 claims, against $92,332 paid for services in 2024. Sight Sciences, Inc. was the largest of 5 companies reporting payments in 2025, $116.79 in all, mostly food and beverage.
Overview
| NPI | 1427443316 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 30, 2015 |
| Last updated in NPPES | Apr 11, 2025 |
| Certified by provider | Apr 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Glaucoma Specialist Primary | 207WX0009X | A160341 | CA |
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 | 342 |
|---|---|
| Services billed | 1,047 across 25 procedure codes |
| Paid by Medicare | $92,332 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,352 · 10,748 30-day fills |
|---|---|
| Patients | 983 |
| Total drug cost | $285,414 |
| Generic share | 68% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Ophthalmology |
Medical group
- Riverside Medical Clinic IncRiverside, CA · 173 clinicians
Hospital affiliation
- Riverside University Health System-Medical CenterMoreno Valley, CA
Industry payments (Open Payments)
- 2025$116.79 · 7 payments from 5 companies
- 2024$199.54 · 9 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sight Sciences, Inc. | $48.24 | 3 |
| Alcon Vision LLC | $19.59 | 1 |
| New World Medical,inc. | $18.01 | 1 |
| Bausch & Lomb Americas Inc. | $17.38 | 1 |
| Abbvie Inc. | $13.57 | 1 |
What the 2025 payments were for
- Food and Beverage$116.79 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records