Quick answers
- Which hospitals does Gustavo E. Ayala work at?
- Medicare's official clinician data lists Gustavo E. Ayala at 1 hospital: Memorial Hermann - Texas Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gustavo E. Ayala see patients?
- Medicare's clinician data lists 3 practice locations, including Houston, TX. Call before your visit to confirm the address.
- What is Gustavo E. Ayala's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Gustavo E. Ayala accept Medicare assignment?
- Yes. Medicare's clinician data says Gustavo E. Ayala 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 Gustavo E. Ayala?
- (713) 704-4000, as listed in official Medicare / NPI Registry data.
- What is Gustavo E. Ayala's NPI number?
- 1992709356. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gustavo E. Ayala works
Medicare's Facility Affiliation Data lists Gustavo E. Ayala at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Hermann - Texas Medical CenterHouston, TX · Acute Care Hospital · CCN 450068
Practice locations
Addresses where Gustavo E. Ayala is enrolled with Medicare (CMS data updated 2026-10-02).
- 6411 Fannin StHouston, TX 77030 (713) 704‑4000
- 6431 Fannin StHouston, TX 77030 (713) 500‑5301
- 6431 Fannin St, Msb 2 136Houston, TX 77030
Group practices
Medicare enrollment lists Gustavo E. Ayala as a member of this group (CMS data updated 2026-10-02).
- University of Texas Health Science Center at Houston47 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992709356 |
| 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 2026-10-02, retrieved 2026-10-29
- 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