Quick answers
- Which hospitals does Brett Mullin work at?
- Medicare's official clinician data lists Brett Mullin at 2 hospitals: Sharp Memorial Hospital and Sierra View Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brett Mullin see patients?
- Medicare's clinician data lists 5 practice locations, including Orange, CA, El Centro, CA and Brawley, CA. Call before your visit to confirm the address.
- What is Brett Mullin's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Brett Mullin accept Medicare assignment?
- Yes. Medicare's clinician data says Brett Mullin 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 Brett Mullin?
- (714) 456-7890, as listed in official Medicare / NPI Registry data.
- What is Brett Mullin's NPI number?
- 1275949083. 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 Mullin works
Medicare's Facility Affiliation Data lists Brett Mullin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · CCN 050100
- Sierra View Medical CenterPorterville, CA · Acute Care Hospital · CCN 050261
Practice locations
Addresses where Brett Mullin is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 the City Dr SOrange, CA 92868 (714) 456‑7890
- 1415 Ross AveEl Centro, CA 92243 (760) 339‑4045
- 207 W Legion RdBrawley, CA 92227 (760) 351‑4892
- 465 W Putnam AvePorterville, CA 93257 (559) 784‑1110
- 7901 Frost StSan Diego, CA 92123 (858) 939‑3400
Group practices
Medicare enrollment lists Brett Mullin as a member of these groups (CMS data updated 2026-10-02).
- Emergency and Acute Care Medical Corporation422 clinicians in the group
- The Regents of the University of California-Irvine125 clinicians in the group
- Focus on Health Inc64 clinicians in the group
- 24 on Physicians of California PC57 clinicians in the group
- Central Valley Critical Care Medicine - A Professional Corporat33 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Orange
Clinicians with the same Medicare primary specialty in Orange, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275949083 |
| 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