Quick answers
- Which hospitals does Brett McMullen work at?
- Medicare's official clinician data lists Brett McMullen at 4 hospitals: Ascension Seton Medical Center Austin, Ascension Seton Williamson, Northwest Hills Surgical Hospital and St David's Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brett McMullen see patients?
- Medicare's clinician data lists 1 practice location in San Antonio, TX. Call before your visit to confirm the address.
- What is Brett McMullen's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Brett McMullen accept Medicare assignment?
- Medicare's clinician data says Brett McMullen may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Brett McMullen's NPI number?
- 1295382042. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brett McMullen works
Medicare's Facility Affiliation Data lists Brett McMullen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Seton Medical Center AustinAustin, TX · Acute Care Hospital · CCN 450056
- Ascension Seton WilliamsonRound Rock, TX · Acute Care Hospital · CCN 670041
- Northwest Hills Surgical HospitalAustin, TX · Acute Care Hospital · CCN 450808
- St David's Medical CenterAustin, TX · Acute Care Hospital · CCN 450431
Practice locations
Addresses where Brett McMullen is enrolled with Medicare (CMS data updated 2026-10-02).
- 2915 W Bitters RdSan Antonio, TX 78248
Specialties
- Physician Assistantprimary
Other physician assistants in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1295382042 |
| 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