Quick answers
- Which hospitals does Shirley Yan work at?
- Medicare's official clinician data lists Shirley Yan at 1 hospital: San Mateo Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Shirley Yan see patients?
- Medicare's clinician data lists 2 practice locations, including South San Francisco, CA and Daly City, CA. Call before your visit to confirm the address.
- What is Shirley Yan's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Shirley Yan accept Medicare assignment?
- Yes. Medicare's clinician data says Shirley Yan 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 Shirley Yan?
- (650) 573-2222, as listed in official Medicare / NPI Registry data.
- What is Shirley Yan's NPI number?
- 1477099257. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Shirley Yan works
Medicare's Facility Affiliation Data lists Shirley Yan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- San Mateo Medical CenterSan Mateo, CA · Acute Care Hospital · CCN 050113
Practice locations
Addresses where Shirley Yan is enrolled with Medicare (CMS data updated 2026-10-02).
- 306 Spruce AveSouth San Francisco, CA 94080 (650) 573‑2222
- 380 90th StDaly City, CA 94015 (650) 573‑2222
Group practices
Medicare enrollment lists Shirley Yan as a member of this group (CMS data updated 2026-10-02).
- County of San Mateo310 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | Pennsylvania College Of Optometry |
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477099257 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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