Provider Profile
Sierra K. Lo, OD is an optometrist practicing in Glendora, CA. Sierra trained at Southern California College of Optometry, graduating in 2025. Sierra is also listed as specializing in student in an organized health care education program.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Source: NPPES NPI Registry
451 W FOOTHILL BLVD
Glendora, CA 91741
Dr. Lo is an optometrist in Glendora, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dr. Lo is listed at 451 W Foothill Blvd, Glendora, CA 91741. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (626) 912-3937. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Lo's National Provider Identifier is 1730972571. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Lo attended Southern California College of Optometry, graduating in 2025. This comes from the CMS National Downloadable File.
CMS public data
Dr. Lo has 1 year experience. Calculated from a graduation year of 2025, reported in the CMS National Downloadable File.
CMS public data
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lo. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.