Provider Profile

Marissa E. Siu, OTD

Unclaimed Profile

About Marissa Siu

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Specialty

Occupational Therapist (Primary)

Credentials & Licensing

CA license21842
NPI1124943667
NPI issued08/12/2026

License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.

Common questions

What does Marissa E. Siu specialize in?

Marissa E. Siu is an occupational therapist in Elk Grove, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where is Marissa E. Siu located?

Marissa E. Siu is listed at 9461 Soaring Oaks Dr, Elk Grove, CA 95758. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Marissa E. Siu's phone number?

The number on file is (916) 683-3073. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is the NPI for Marissa E. Siu?

Marissa E. Siu's National Provider Identifier is 1124943667. 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

Is Marissa E. Siu's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by Marissa E. Siu. 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.