Quick answers
- Which hospitals does Walter Mendoza work at?
- Medicare's official clinician data lists Walter Mendoza at 1 hospital: Houston Methodist Willowbrook Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Walter Mendoza see patients?
- Medicare's clinician data lists 6 practice locations, including Sugar Land, TX and Houston, TX. Call before your visit to confirm the address.
- What is Walter Mendoza's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Internal Medicine.
- Does Walter Mendoza accept Medicare assignment?
- Yes. Medicare's clinician data says Walter Mendoza 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 Walter Mendoza?
- (281) 275-0800, as listed in official Medicare / NPI Registry data.
- What is Walter Mendoza's NPI number?
- 1669768297. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Walter Mendoza works
Medicare's Facility Affiliation Data lists Walter Mendoza at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Houston Methodist Willowbrook HospitalHouston, TX · Acute Care Hospital · CCN 450844
Practice locations
Addresses where Walter Mendoza is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 16605 Southwest FwySugar Land, TX 77479 (281) 275‑0800
- 16605 Southwest Fwy 400 Mob3, Methodist Family Medicine GroupSugar Land, TX 77479 (281) 275‑0800
- 16605 SW Fwy 410, Methodist Diag Card of HoustonSugar Land, TX 77479 (281) 274‑0148
- 18220 State Hwy 249Houston, TX 77070
- 6445 Main St, Suite 2500Houston, TX 77030 (713) 441‑3150
Group practices
Medicare enrollment lists Walter Mendoza as a member of these groups (CMS data updated 2026-10-02).
- TMH Physician Associates PLLC1,690 clinicians in the group
- Houston Methodist Specialty Physicians1,528 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
Other hospitalists in Sugar Land
Clinicians with the same Medicare primary specialty in Sugar Land, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669768297 |
| 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