Quick answers
- Where does Mary Ann E. Lloyd see patients?
- Medicare's clinician data lists 3 practice locations, including San Mateo, CA, San Carlos, CA and Palo Alto, CA. Call before your visit to confirm the address.
- What is Mary Ann E. Lloyd's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Mary Ann E. Lloyd accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Ann E. Lloyd 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 Mary Ann E. Lloyd?
- (650) 343-4200, as listed in official Medicare / NPI Registry data.
- What is Mary Ann E. Lloyd's NPI number?
- 1285743153. 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 Mary Ann E. Lloyd is enrolled with Medicare (CMS data updated 2026-10-02).
- 123 S San Mateo DrSan Mateo, CA 94401 (650) 343‑4200
- 301 Industrial RdSan Carlos, CA 94070
- 795 El Camino RealPalo Alto, CA 94301 (415) 600‑1020
Group practices
Medicare enrollment lists Mary Ann E. Lloyd as a member of this group (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in San Mateo
Clinicians with the same Medicare primary specialty in San Mateo, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1985 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285743153 |
| 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