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Provider Profile

Sai Oak, OD

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At a glance

About Dr. Oak

Sai Oak, OD practices optometry in Sturgeon Bay, WI. Sai is a 2025 graduate of Southern College of Optometry. Sai is also listed as specializing in optometrist. The provider's National Provider Identifier (NPI) is 1104712926.

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

Education & Training

Specialty

Optometry (Primary)

Credentials & Licensing

WI licenceAs reported to the NPI registry
No. 4074-35As reported
NPINational Provider Identifier
1104712926Issued 2025

As reported to the NPI registry ↗

Medicare information

Accepts Medicare assignmentYes
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 is Dr. Oak's specialty?

Dr. Oak is an optometry in Sturgeon Bay, WI. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where can I find Dr. Oak?

Dr. Oak is listed at 165 N 3Rd Ave, Sturgeon Bay, WI 54235. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How do I contact Dr. Oak?

The number on file is (920) 743-2020. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Dr. Oak's NPI number?

Dr. Oak's National Provider Identifier is 1104712926. 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

What is Dr. Oak's medical education?

Dr. Oak attended Southern College of Optometry, graduating in 2025. This comes from the CMS National Downloadable File.

CMS public data

How long has Dr. Oak been practicing?

Dr. Oak has 1 year experience. Calculated from a graduation year of 2025, reported in the CMS National Downloadable File.

CMS public data

Has Dr. Oak confirmed this information?

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

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