Mary Leong, O.D.
NPI 1003968249ActiveIndividual· Optometrist· Brentwood, CA
Optometrist (O.D.) in Brentwood, California, trained at Southern California College of Optometry (class of 2002). Mostly services rather than prescriptions: Medicare paid $6,178 for 40 patients in 2024, with only 12 Part D claims. Alcon Vision LLC was the largest of 3 companies reporting payments in 2025, $676.52 in all, mostly food and beverage.
Overview
| NPI | 1003968249 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Jan 17, 2007 |
| Last updated in NPPES | May 25, 2026 |
| Certified by provider | May 25, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 11914T | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 40 |
|---|---|
| Services billed | 81 across 11 procedure codes |
| Paid by Medicare | $6,178 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12 · 31 30-day fills |
|---|---|
| Total drug cost | $105.35 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Southern California College of Optometry |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Optometry |
Medical groups
- Balfour Vision Optix Optometry IncBrentwood, CA · 3 clinicians
- Winson Ong OdAntioch, CA · 3 clinicians
Industry payments (Open Payments)
- 2025$676.52 · 6 payments from 3 companies
- 2024$614.69 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $376.44 | 3 |
| Coopervision Inc. | $178.18 | 2 |
| Bausch & Lomb Americas Inc. | $121.90 | 1 |
What the 2025 payments were for
- Food and Beverage$676.52 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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