Lina Chan, OD
NPI 1659358042ActiveIndividual· Optometrist· Walnut Creek, CA
Optometrist (OD) in Walnut Creek, California, trained at University of California - School of Optometry (class of 1999). Mostly services rather than prescriptions: Medicare paid $19,286 for 157 patients in 2024, with only 22 Part D claims. Glaukos Corporation was the largest of 11 companies reporting payments in 2025, $637.40 in all, mostly food and beverage.
Overview
| NPI | 1659358042 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Dec 27, 2005 |
| Last updated in NPPES | Jan 7, 2020 |
| Certified by provider | Jan 7, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT11108 | 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 - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 157 |
|---|---|
| Services billed | 276 across 15 procedure codes |
| Paid by Medicare | $19,286 |
Part D prescriptions in 2024
| Prescriptions (claims) | 22 · 27 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $2,884 |
Education and affiliations
| Medical school | University of California - School of Optometry |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Optometry |
Medical group
- Northern California Cornea Associates IncOakland, CA · 6 clinicians
Industry payments (Open Payments)
- 2025$637.40 · 18 payments from 11 companies
- 2024$152.92 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaukos Corporation | $215.35 | 4 |
| Kedrion Biopharma, Inc. | $117.83 | 1 |
| Harrow Eye, LLC | $65.38 | 3 |
| Amgen Inc. | $52.16 | 2 |
| Sun Pharmaceutical Industries Inc. | $47.84 | 2 |
What the 2025 payments were for
- Food and Beverage$637.40 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 60 optometrists in Walnut Creek · All optometrists in California