Quick answers
- Which hospitals does John C. Affeldt work at?
- Medicare's official clinician data lists John C. Affeldt at 1 hospital: Riverside University Health System-Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Affeldt see patients?
- Medicare's clinician data lists 4 practice locations, including Loma Linda, CA, Moreno Valley, CA and Riverside, CA. Call before your visit to confirm the address.
- What is John C. Affeldt's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does John C. Affeldt accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Affeldt 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. Affeldt?
- (951) 486-5700, as listed in official Medicare / NPI Registry data.
- What is John C. Affeldt's NPI number?
- 1275523375. 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. Affeldt works
Medicare's Facility Affiliation Data lists John C. Affeldt at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Riverside University Health System-Medical CenterMoreno Valley, CA · Acute Care Hospital · CCN 050292
Practice locations
Addresses where John C. Affeldt is enrolled with Medicare (CMS data updated 2026-10-02).
- 11370 Anderson StLoma Linda, CA 92354
- 26520 Cactus AveMoreno Valley, CA 92555
- 26520 Cactus Ave, Suite 2021Moreno Valley, CA 92555 (951) 486‑5700
- 4244 Riverwalk Pkwy, Suite 100Riverside, CA 92505 (909) 558‑2154
Group practices
Medicare enrollment lists John C. Affeldt as a member of this group (CMS data updated 2026-10-02).
- Faculty Physicians and Surgeons of Llusm1,315 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Loma Linda
Clinicians with the same Medicare primary specialty in Loma Linda, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275523375 |
| 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