Quick answers
- Where does Joy S. Lam see patients?
- Medicare's clinician data lists 2 practice locations, including Sunnyvale, CA and Palo Alto, CA. Call before your visit to confirm the address.
- What is Joy S. Lam's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Joy S. Lam accept Medicare assignment?
- Yes. Medicare's clinician data says Joy S. Lam 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 Joy S. Lam?
- (408) 217-2887, as listed in official Medicare / NPI Registry data.
- What is Joy S. Lam's NPI number?
- 1174836217. 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 Joy S. Lam is enrolled with Medicare (CMS data updated 2026-10-02).
- 341 Cobalt Way, Suite 202Sunnyvale, CA 94085 (408) 217‑2887
- 460 University AvePalo Alto, CA 94301 (650) 327‑2020
Specialties
- Optometryprimary
Other optometrists in Sunnyvale
Clinicians with the same Medicare primary specialty in Sunnyvale, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | University Of Houston - College Of Optometry |
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174836217 |
| 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