Quick answers
- Where does Stephen Ou see patients?
- Medicare's clinician data lists 1 practice location in Anaheim, CA. Call before your visit to confirm the address.
- What is Stephen Ou's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Endocrinology.
- Does Stephen Ou accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen Ou 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 Stephen Ou?
- (714) 279-6088, as listed in official Medicare / NPI Registry data.
- What is Stephen Ou's NPI number?
- 1669763439. 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 Stephen Ou is enrolled with Medicare (CMS data updated 2026-10-02).
- 5475 E La Palma AveAnaheim, CA 92807 (714) 279‑6088
Group practices
Medicare enrollment lists Stephen Ou as a member of this group (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Internal Medicineprimary
- Endocrinologyalso
Other internal medicine doctors in Anaheim
Clinicians with the same Medicare primary specialty in Anaheim, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Rochester School Of Medicine And Dentistry |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669763439 |
| 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