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Provider Profile

Diana Nguyen, OD

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At a glance

About Dr. Nguyen

Listed in the NPI registry as an optometrist, Diana Nguyen, OD practices in Livermore, CA. Diana graduated from Southern California College of Optometry in 2019. NPI 1659955201 identifies this record in the national registry.

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

Education & Training

Specialty

Optometrist (Primary)

Credentials & Licensing

CA · OptometristCalifornia State Board of Optometry
No. 34790CurrentExpires Apr 2027Since 2021
NPINational Provider Identifier
1659955201Issued 2021

Snapshot · verify with the board ↗

Medicare information

Accepts Medicare assignmentSometimes (reported per claim)
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What does Dr. Nguyen specialize in?

Dr. Nguyen is an optometrist in Livermore, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where is Dr. Nguyen located?

Dr. Nguyen is listed at 4423 First St, Livermore, CA 94551. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Dr. Nguyen's phone number?

The number on file is (925) 292-0025. Contact the office directly to confirm availability and scheduling.

NPI registry

What is the NPI for Dr. Nguyen?

Dr. Nguyen's National Provider Identifier is 1659955201. 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

Where did Dr. Nguyen go to medical school?

Dr. Nguyen attended Southern California College of Optometry, graduating in 2019. This comes from the CMS National Downloadable File.

CMS public data

How much experience does Dr. Nguyen have?

Dr. Nguyen has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.

CMS public data

Is Dr. Nguyen's profile verified?

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

Guide.md

Guide.md listings do not constitute medical advice or an endorsement.

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