Quick answers
- Which hospitals does John C. Stewart work at?
- Medicare's official clinician data lists John C. Stewart at 3 hospitals: Loma Linda University Medical Center, Memorialcare Saddleback Medical Center and Mercy Medical Center Redding. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Stewart see patients?
- Medicare's clinician data lists 4 practice locations, including Loma Linda, CA, Laguna Hills, CA and Los Angeles, CA. Call before your visit to confirm the address.
- What is John C. Stewart's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does John C. Stewart accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Stewart 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 John C. Stewart?
- (949) 837-4500, as listed in official Medicare / NPI Registry data.
- What is John C. Stewart's NPI number?
- 1013016922. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Stewart works
Medicare's Facility Affiliation Data lists John C. Stewart at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Loma Linda University Medical CenterLoma Linda, CA · Acute Care Hospital · CCN 050327
- Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · CCN 050603
- Mercy Medical Center ReddingRedding, CA · Acute Care Hospital · CCN 050280
Practice locations
Addresses where John C. Stewart is enrolled with Medicare (CMS data updated 2026-10-02).
- 11234 Anderson StLoma Linda, CA 92354
- 11370 Anderson StLoma Linda, CA 92354
- 24451 Health Ctr DrLaguna Hills, CA 92653 (949) 837‑4500
- File Number, Suite 54701Los Angeles, CA 90074
Group practices
Medicare enrollment lists John C. Stewart as a member of these groups (CMS data updated 2026-10-02).
- Faculty Physicians and Surgeons of Llusm1,315 clinicians in the group
- Cep America - Anesthesia PC849 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Loma Linda
Clinicians with the same Medicare primary specialty in Loma Linda, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013016922 |
| 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