Quick answers
- Where does Patrick G. Guillermo see patients?
- Medicare's clinician data lists 2 practice locations, including Spring, TX and Houston, TX. Call before your visit to confirm the address.
- What is Patrick G. Guillermo's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Patrick G. Guillermo accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick G. Guillermo 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 Patrick G. Guillermo?
- (281) 453-7777, as listed in official Medicare / NPI Registry data.
- What is Patrick G. Guillermo's NPI number?
- 1174934301. 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 Patrick G. Guillermo is enrolled with Medicare (CMS data updated 2026-10-02).
- 2306 Rayford RdSpring, TX 77386 (281) 453‑7777
- 837 Cypress Creek Pkwy, Suite 111Houston, TX 77090 (281) 453‑7150
Group practices
Medicare enrollment lists Patrick G. Guillermo as a member of these groups (CMS data updated 2026-10-02).
- Houston ER Physicians, LLC11 clinicians in the group
- Rayford ER Group PLLC10 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Spring
Clinicians with the same Medicare primary specialty in Spring, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174934301 |
| 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