Quick answers
- Which hospitals does Matthew J. Mason work at?
- Medicare's official clinician data lists Matthew J. Mason at 2 hospitals: El Centro Regional Medical Center and UC San Diego Health Hillcrest - Hillcrest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew J. Mason see patients?
- Medicare's clinician data lists 3 practice locations, including El Centro, CA, San Diego, CA and Escondido, CA. Call before your visit to confirm the address.
- What is Matthew J. Mason's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Matthew J. Mason accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew J. Mason 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 Matthew J. Mason?
- (858) 759-4765, as listed in official Medicare / NPI Registry data.
- What is Matthew J. Mason's NPI number?
- 1487116281. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew J. Mason works
Medicare's Facility Affiliation Data lists Matthew J. Mason at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- El Centro Regional Medical CenterEl Centro, CA · Acute Care Hospital · CCN 050045
- UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · CCN 050025
Practice locations
Addresses where Matthew J. Mason is enrolled with Medicare (CMS data updated 2026-10-02).
- 1415 Ross AveEl Centro, CA 92243 (858) 759‑4765
- 200 W Arbor DrSan Diego, CA 92103 (858) 657‑7000
- 800 W Valley PkwyEscondido, CA 92025 (760) 796‑3763
Group practices
Medicare enrollment lists Matthew J. Mason as a member of these groups (CMS data updated 2026-10-02).
- Regents of the University of California2,089 clinicians in the group
- Regents of the University of California45 clinicians in the group
- Elizabeth Supportive Medical Specialists a Medical Corporation7 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in El Centro
Clinicians with the same Medicare primary specialty in El Centro, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487116281 |
| 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