Rex Arthur Werner, O.D.
NPI 1891760716ActiveIndividual· Optometrist· El Cajon, CA
Optometrist (O.D.) in El Cajon, California, trained at University Alabama Birmingham - School of Optometry (class of 1989). In 2024 Medicare paid $45,340 for 214 patients, and Part D covered 187 of their prescriptions, 33% of them generic. Coopervision Inc. was the largest of 3 companies reporting payments in 2025, $168.78 in all, mostly food and beverage.
Overview
| NPI | 1891760716 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Feb 22, 2006 |
| Last updated in NPPES | Aug 4, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT9378TPL | 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 | 214 |
|---|---|
| Services billed | 787 across 20 procedure codes |
| Paid by Medicare | $45,340 |
Part D prescriptions in 2024
| Prescriptions (claims) | 187 · 395 30-day fills |
|---|---|
| Patients | 53 |
| Total drug cost | $41,494 |
| Generic share | 33% of claims |
Education and affiliations
| Medical school | University Alabama Birmingham - School of Optometry |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Optometry |
Medical group
- Rex Aaron Werner Od, IncEl Cajon, CA · 5 clinicians
Industry payments (Open Payments)
- 2025$168.78 · 4 payments from 3 companies
- 2024$468.48 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Coopervision Inc. | $104.27 | 2 |
| Abbvie Inc. | $34.39 | 1 |
| Alcon Vision LLC | $30.12 | 1 |
What the 2025 payments were for
- Food and Beverage$168.78 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 38 optometrists in El Cajon · All optometrists in California