John Francis Maher III, M.D.
NPI 1265561211ActiveIndividual· Ophthalmology· Torrance, CA
Ophthalmology (M.D.) in Torrance, California, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1981). In 2024 Medicare paid $622,139 for 1,532 patients, and Part D covered 2,154 of their prescriptions, 54% of them generic. Amgen Inc. reported $34.63 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1265561211 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Mar 5, 2007 |
| Last updated in NPPES | Oct 4, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | G54565 | 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 | 1,532 |
|---|---|
| Services billed | 6,469 across 51 procedure codes |
| Paid by Medicare | $622,139 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,154 · 3,183 30-day fills |
|---|---|
| Patients | 578 |
| Total drug cost | $126,681 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Ophthalmology |
Medical group
- Marshall B Ketchum UniversityAnaheim, CA · 57 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$34.63 · 2 payments from 1 company
- 2024$249.64 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $34.63 | 2 |
What the 2025 payments were for
- Food and Beverage$34.63 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 55 ophthalmologists in Torrance · All ophthalmologists in California