Quick answers
- Where does Mariko D. Yamashiro see patients?
- Medicare's clinician data lists 1 practice location in Monrovia, CA. Call before your visit to confirm the address.
- What is Mariko D. Yamashiro's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Mariko D. Yamashiro accept Medicare assignment?
- Yes. Medicare's clinician data says Mariko D. Yamashiro 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 Mariko D. Yamashiro?
- (626) 357-0408, as listed in official Medicare / NPI Registry data.
- What is Mariko D. Yamashiro's NPI number?
- 1457404147. 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 Mariko D. Yamashiro is enrolled with Medicare (CMS data updated 2026-10-02).
- 937 W Huntington DrMonrovia, CA 91016 (626) 357‑0408
Group practices
Medicare enrollment lists Mariko D. Yamashiro as a member of this group (CMS data updated 2026-10-02).
- Vision Quest Optometry, Inc.2 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Monrovia
Clinicians with the same Medicare primary specialty in Monrovia, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | Southern California College Of Optometry |
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457404147 |
| 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