Mark B. Byers, O.D.
NPI 1164551966ActiveIndividual· Optometrist· Marysville, CA
Optometrist (O.D.) in Marysville, California, licensed in CA, with an NPI issued in March 2007. Mostly services rather than prescriptions: Medicare paid $20,039 for 188 patients in 2024, with only 38 Part D claims. E.R. Squibb & Sons, L.L.C. reported $105.47 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1164551966 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | Yes |
| NPI issued | Mar 5, 2007 |
| Last updated in NPPES | Sep 27, 2023 |
| Certified by provider | Sep 27, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 11554T | 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 Practitioner - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 188 |
|---|---|
| Services billed | 257 across 8 procedure codes |
| Paid by Medicare | $20,039 |
Part D prescriptions in 2024
| Prescriptions (claims) | 38 · 55 30-day fills |
|---|---|
| Patients | 17 |
| Total drug cost | $6,154 |
| Generic share | 45% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Optometry |
Industry payments (Open Payments)
- 2025$105.47 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $105.47 | 1 |
What the 2025 payments were for
- Food and Beverage$105.47 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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