Quick answers
- Where does Derek L. Maddox see patients?
- Medicare's clinician data lists 2 practice locations, including Grand Island, NE and Norfolk, NE. Call before your visit to confirm the address.
- What is Derek L. Maddox's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Derek L. Maddox accept Medicare assignment?
- Yes. Medicare's clinician data says Derek L. Maddox accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Derek L. Maddox?
- (308) 384-6922, as listed in official Medicare / NPI Registry data.
- What is Derek L. Maddox's NPI number?
- 1992315196. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Derek L. Maddox is enrolled with Medicare (CMS data updated 2026-10-02).
- 3540 Prairieview St, Suite 100Grand Island, NE 68803 (308) 384‑6922
- 3610 W Norfolk AveNorfolk, NE 68701 (402) 371‑8230
Group practices
Medicare enrollment lists Derek L. Maddox as a member of this group (CMS data updated 2026-10-02).
- Unity Eye Centers Inc19 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Grand Island
Clinicians with the same Medicare primary specialty in Grand Island, NE — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992315196 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians