Provider Profile

Alyssa Callahan, MS RDN

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About Alyssa Callahan

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Specialty

Registered Dietitian / Nutritionist (Primary)
Registered Dietitian / Nutritionist (Additional)

Credentials & Licensing

License number86064070
NPI1225553936
NPI issued08/03/2017

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 kind of doctor is Alyssa Callahan?

Alyssa Callahan is a registered dietitian / nutritionist in Thousand Oaks, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

What is Alyssa Callahan's address?

Alyssa Callahan is listed at 509 Marin St Ste 228, Thousand Oaks, CA 91360. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Alyssa Callahan?

The number on file is (805) 267-9338. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is Alyssa Callahan's NPI number?

Alyssa Callahan's National Provider Identifier is 1225553936. 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

How long has Alyssa Callahan been practicing?

Alyssa Callahan has 9+ years experience. Registered with an NPI since 2017. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Has Alyssa Callahan confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Alyssa Callahan. 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.