Quick answers
- Where does John B. Guillory see patients?
- Medicare's clinician data lists 2 practice locations, including Brenham, TX and Texarkana, TX. Call before your visit to confirm the address.
- What is John B. Guillory's specialty?
- Medicare lists Optometry as the primary specialty.
- Does John B. Guillory accept Medicare assignment?
- Yes. Medicare's clinician data says John B. Guillory 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 John B. Guillory?
- (979) 836-1077, as listed in official Medicare / NPI Registry data.
- What is John B. Guillory's NPI number?
- 1508153990. 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 John B. Guillory is enrolled with Medicare (CMS data updated 2026-10-02).
- 2654 Hwy 36 SBrenham, TX 77833 (979) 836‑1077
- 2703 Richmond RdTexarkana, TX 75503 (903) 838‑0783
Group practices
Medicare enrollment lists John B. Guillory as a member of this group (CMS data updated 2026-10-02).
- Med Southwest PLLC229 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Brenham
Clinicians with the same Medicare primary specialty in Brenham, TX — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | University Of Houston - College Of Optometry |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508153990 |
| 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