Quick answers
- Does Ryan Phillip P. Alonzo accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan Phillip P. Alonzo 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 Ryan Phillip P. Alonzo's NPI number?
- 1871122101. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan Phillip P. Alonzo works
Medicare's Facility Affiliation Data lists Ryan Phillip P. Alonzo 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.
- Memorial Hermann Memorial City HospitalHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450610
Practice locations
Addresses where Ryan Phillip P. Alonzo is enrolled with Medicare (CMS data updated October 2, 2026).
- 23920 Katy Fwy, Suite 410Katy, TX 77494 (713) 772‑1200
Group practices
Medicare enrollment lists Ryan Phillip P. Alonzo as a member of this group (CMS data updated October 2, 2026).
- Southwest Surgical Associates LLP19 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Katy
Clinicians with the same Medicare primary specialty in Katy, TX — not a recommendation.
Other clinicians in Southwest Surgical Associates LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Texas A & M University System, Hsc, College Of Medicine |
| Graduation year | 2020 (6 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871122101 |
| 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