Quick answers
- Where does Gregory Yamaguchi see patients?
- Medicare's clinician data lists 3 practice locations, including Panorama City, CA and Santa Clarita, CA. Call before your visit to confirm the address.
- What is Gregory Yamaguchi's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Gregory Yamaguchi accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Yamaguchi 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 Gregory Yamaguchi?
- (818) 375-2000, as listed in official Medicare / NPI Registry data.
- What is Gregory Yamaguchi's NPI number?
- 1922569938. 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 Gregory Yamaguchi is enrolled with Medicare (CMS data updated 2026-10-02).
- 13652 Cantara StPanorama City, CA 91402 (818) 375‑2000
- 27107 Tourney RdSanta Clarita, CA 91355 (661) 222‑2323
- 8250 Woodman AvePanorama City, CA 91402 (818) 375‑2000
Group practices
Medicare enrollment lists Gregory Yamaguchi as a member of this group (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Panorama City
Clinicians with the same Medicare primary specialty in Panorama City, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922569938 |
| 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