Quick answers
- Which hospitals does William D. Mayer work at?
- Medicare's official clinician data lists William D. Mayer at 1 hospital: St David's Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William D. Mayer see patients?
- Medicare's clinician data lists 4 practice locations, including Austin, TX. Call before your visit to confirm the address.
- What is William D. Mayer's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does William D. Mayer accept Medicare assignment?
- Yes. Medicare's clinician data says William D. Mayer 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 William D. Mayer?
- (512) 472-1381, as listed in official Medicare / NPI Registry data.
- What is William D. Mayer's NPI number?
- 1841221686. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William D. Mayer works
Medicare's Facility Affiliation Data lists William D. Mayer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St David's Medical CenterAustin, TX · Acute Care Hospital · CCN 450431
Practice locations
Addresses where William D. Mayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1015 E 32nd StAustin, TX 78705 (512) 472‑1381
- 6500 N Mopac Expy, Building 2 Suite 2205Austin, TX 78731
- 6500 N Mopac Expy 2205 N OfficeAustin, TX 78731 (512) 472‑1381
- 919 E 32nd StAustin, TX 78705 (512) 476‑7111
Group practices
Medicare enrollment lists William D. Mayer as a member of this group (CMS data updated 2026-10-02).
- Surgical Associates of Austin, PA7 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841221686 |
| 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