Quick answers
- Where does Catherine Ong see patients?
- Medicare's clinician data lists 2 practice locations, including Cupertino, CA and Milpitas, CA. Call before your visit to confirm the address.
- What is Catherine Ong's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Catherine Ong accept Medicare assignment?
- Yes. Medicare's clinician data says Catherine Ong 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 Catherine Ong?
- (408) 996-9886, as listed in official Medicare / NPI Registry data.
- What is Catherine Ong's NPI number?
- 1346960689. 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 Catherine Ong is enrolled with Medicare (CMS data updated 2026-10-02).
- 19459 Stevens Creek Blvd, Suite 110Cupertino, CA 95014 (408) 996‑9886
- 310 Barber Ct, Unit 180Milpitas, CA 95035 (408) 432‑8101
Group practices
Medicare enrollment lists Catherine Ong as a member of this group (CMS data updated 2026-10-02).
- Total Vision PC110 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Cupertino
Clinicians with the same Medicare primary specialty in Cupertino, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | Berkeley Northeastern State University - College Of Medicine |
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1346960689 |
| 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