Quick answers
- Where does Jason Jia see patients?
- Medicare's clinician data lists 5 practice locations, including Redlands, CA, Ontario, CA and Pasaden, CA. Call before your visit to confirm the address.
- What is Jason Jia's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Jason Jia accept Medicare assignment?
- Yes. Medicare's clinician data says Jason Jia 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 Jason Jia?
- (909) 809-3222, as listed in official Medicare / NPI Registry data.
- What is Jason Jia's NPI number?
- 1558940056. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Jason Jia is enrolled with Medicare (CMS data updated 2026-10-02).
- 1301 California StRedlands, CA 92374 (909) 809‑3222
- 2295 S Vineyard AveOntario, CA 91761 (909) 724‑5000
- 393 E Walnut StPasaden, CA 91188
- 393 E Walnut St 3rd FlPasadena, CA 91188
- 9961 Sierra AveFontana, CA 92335 (909) 427‑5000
Group practices
Medicare enrollment lists Jason Jia as a member of this group (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Redlands
Clinicians with the same Medicare primary specialty in Redlands, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558940056 |
| 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
- 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