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Edit this profileAt a glance
- 2580 Old 1St St, Livermore, CA 94550
About Dr. Nguyen
Sidney A. Nguyen, OD is an optometrist based in Livermore, CA. Sidney is a 2025 graduate of University of California - School of Optometry. The provider's National Provider Identifier (NPI) is 1285500769.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (925) 449-8188
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
2580 OLD 1ST ST
Livermore, CA 94550
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other optometrists at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other optometrists in Livermore 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at University of California - School of Optometry 8
Other providers in the same specialty who trained at the same institution.
Class of 2025 at University of California - School of Optometry 8
Providers who graduated from the same medical school in the same year.
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 2580 Old 1St St, Livermore, CA 94550. 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) 449-8188. 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 1285500769. 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 University of California - School of Optometry, graduating in 2025. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Nguyen have?
Dr. Nguyen has 1 year experience. Calculated from a graduation year of 2025, 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.