Provider Profile

Marissa D. Oneill, CAPDT

Unclaimed Profile

About Marissa Oneill

Marissa D. Oneill, CAPDT is an addiction & substance abuse counselor practicing in San Francisco, CA. Marissa is also listed as specializing in mental health counselor.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.

Specialty

Addiction & Substance Abuse Counselor (Primary)
Addiction & Substance Abuse Counselor (Additional)

Credentials & Licensing

CA license24546
NPI1649110255
NPI issued03/31/2026

Source: NPPES NPI Registry

Common questions

What does Marissa D. Oneill specialize in?

Marissa D. Oneill is an addiction & substance abuse counselor in San Francisco, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where is Marissa D. Oneill located?

Marissa D. Oneill is listed at 1724 Bryant St, San Francisco, CA 94110. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Marissa D. Oneill's phone number?

The number on file is (415) 558-9125. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is the NPI for Marissa D. Oneill?

Marissa D. Oneill's National Provider Identifier is 1649110255. 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 D. Oneill's profile verified?

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