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Provider Profile

John S. Liu

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At a glance

About John Liu

Listed in the NPI registry as an optometrist, John S. Liu practices in Castro Valley, CA. NPI 1114949419 identifies this record in the national registry.

Factual summary compiled by Guide.md from public records; not written by this provider.

Specialty

Optometrist (Primary)

Credentials & Licensing

CA licenceAs reported to the NPI registry
No. 6498TAs reported
NPINational Provider Identifier
1114949419Issued 2006

As reported to the NPI registry ↗

Common questions

What does John S. Liu specialize in?

John S. Liu is an optometrist in Castro Valley, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where is John S. Liu located?

John S. Liu is listed at 3550 Castro Valley Blvd, Castro Valley, CA 94546. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is John S. Liu's phone number?

The number on file is (510) 581-1680. Contact the office directly to confirm availability and scheduling.

NPI registry

What is the NPI for John S. Liu?

John S. Liu's National Provider Identifier is 1114949419. 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

How much experience does John S. Liu have?

John S. Liu has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Is John S. Liu's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by John S. Liu. If this is you, claiming it is free.

Guide.md

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