John D. Twelker, OD, PHD
NPI 1255405940ActiveIndividual· Optometrist· Tucson, AZ
Optometrist (OD, PHD) in Tucson, Arizona, trained at University of California - School of Optometry (class of 1992). In 2024 Medicare paid $11,266 for 139 patients, and Part D covered 54 of their prescriptions, 28% of them generic. Apellis Pharmaceuticals, Inc. reported $120.18 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1255405940 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD, PHD |
| Sole proprietor | No |
| NPI issued | Nov 17, 2006 |
| Last updated in NPPES | May 24, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 1202 | AZ |
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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 139 |
|---|---|
| Services billed | 157 across 6 procedure codes |
| Paid by Medicare | $11,266 |
Part D prescriptions in 2024
| Prescriptions (claims) | 54 · 65 30-day fills |
|---|---|
| Patients | 16 |
| Total drug cost | $14,373 |
| Generic share | 28% of claims |
Education and affiliations
| Medical school | University of California - School of Optometry |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Optometry |
Medical group
- Banner-University Medical GroupTucson, AZ · 1,072 clinicians
Industry payments (Open Payments)
- 2025$120.18 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Apellis Pharmaceuticals, Inc. | $120.18 | 1 |
What the 2025 payments were for
- Food and Beverage$120.18 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 264 optometrists in Tucson · All optometrists in Arizona