William John Shaffer, O.D.
NPI 1457451031ActiveIndividual· Optometrist· Oxnard, CA
Optometrist (O.D.) in Oxnard, California, trained at Southern College of Optometry (class of 1973). Their prescriptions cost Medicare Part D more than their services did: $29,431 for 161 claims, against $12,792 paid for services in 2024. Alcon Vision LLC reported $24.94 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1457451031 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 24, 2006 |
| Last updated in NPPES | May 14, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 5774T | 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 | 121 |
|---|---|
| Services billed | 328 across 10 procedure codes |
| Paid by Medicare | $12,792 |
Part D prescriptions in 2024
| Prescriptions (claims) | 161 · 243 30-day fills |
|---|---|
| Patients | 41 |
| Total drug cost | $29,431 |
| Generic share | 38% of claims |
Education and affiliations
| Medical school | Southern College of Optometry |
|---|---|
| Graduation year | 1973 |
| Medicare specialty | Optometry |
Industry payments (Open Payments)
- 2025$24.94 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $24.94 | 1 |
What the 2025 payments were for
- Food and Beverage$24.94 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 44 optometrists in Oxnard · All optometrists in California