Quick answers
- Which hospitals does Andy C. Wu work at?
- Medicare's official clinician data lists Andy C. Wu at 4 hospitals: Ascension Seton Hays, CHRISTUS Santa Rosa Hospital-San Marcos, St David's Medical Center and St David's South Austin Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Andy C. Wu see patients?
- Medicare's clinician data lists 1 practice location in San Marcos, TX. Call before your visit to confirm the address.
- What is Andy C. Wu's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Andy C. Wu accept Medicare assignment?
- Yes. Medicare's clinician data says Andy C. Wu 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 Andy C. Wu?
- (512) 353-8979, as listed in official Medicare / NPI Registry data.
- What is Andy C. Wu's NPI number?
- 1689660805. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Andy C. Wu works
Medicare's Facility Affiliation Data lists Andy C. Wu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Seton HaysKyle, TX · Acute Care Hospital · CCN 670056
- CHRISTUS Santa Rosa Hospital-San MarcosSan Marcos, TX · Acute Care Hospital · CCN 450272
- St David's Medical CenterAustin, TX · Acute Care Hospital · CCN 450431
- St David's South Austin Medical CenterAustin, TX · Acute Care Hospital · CCN 450713
Practice locations
Addresses where Andy C. Wu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1301 Wonder World Dr, CHRISTUS Santa Rosa San MarcosSan Marcos, TX 78666 (512) 353‑8979
Group practices
Medicare enrollment lists Andy C. Wu as a member of this group (CMS data updated 2026-10-02).
- Central Texas Hospital Physicians PLLC2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Marcos
Clinicians with the same Medicare primary specialty in San Marcos, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689660805 |
| 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