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Provider Profile

Justin Larkin

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At a glance

About Justin Larkin

Justin Larkin is an addiction & substance abuse counselor practicing in Ontario, CA. This provider record is associated with NPI 1326974239.

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

Specialty

Addiction & Substance Abuse Counselor (Primary)

Credentials & Licensing

NPINational Provider Identifier
1326974239Issued 2026

As reported to the NPI registry ↗

Common questions

What does Justin Larkin specialize in?

Justin Larkin is an addiction & substance abuse counselor in Ontario, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where is Justin Larkin located?

Justin Larkin is listed at 3286 E Guasti Rd Ste 100, Ontario, CA 91761. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Justin Larkin's phone number?

The number on file is (909) 476-2023. Contact the office directly to confirm availability and scheduling.

NPI registry

What is the NPI for Justin Larkin?

Justin Larkin's National Provider Identifier is 1326974239. 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 Justin Larkin's profile verified?

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

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