Quick answers
- Does Alcibiades L. Fleires Gutierrez accept Medicare assignment?
- Yes. Medicare's clinician data says Alcibiades L. Fleires Gutierrez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Alcibiades L. Fleires Gutierrez's NPI number?
- 1265011555. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alcibiades L. Fleires Gutierrez works
Medicare's Facility Affiliation Data lists Alcibiades L. Fleires Gutierrez at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Houston Methodist HospitalHouston, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450358
Practice locations
Addresses where Alcibiades L. Fleires Gutierrez is enrolled with Medicare (CMS data updated October 2, 2026).
- 4560 FM 1960 Rd W, Suite 101Houston, TX 77069 (281) 565‑1112
- 4645 Sweetwater Blvd, Suite 200Sugar Land, TX 77479 (281) 565‑1112
Group practices
Medicare enrollment lists Alcibiades L. Fleires Gutierrez as a member of these groups (CMS data updated October 2, 2026).
- Vanguard Inpatient Physicians PLLC31 clinicians in the group
- Houston in Patient Physician Associates PLLC27 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Vanguard Inpatient Physicians PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265011555 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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