Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Alyssa Callahan, MSRDN

Individual provider Registered Dietitian · NPI 1225553936

Alyssa Callahan, MSRDN is a Registered Dietitian in Thousand Oaks, California. Practices as a sole proprietor. Registered with an NPI since 2017.

In the registry since
2017
Specialties on file
2

Practice location Address checks out

509 Marin St Ste 228
Thousand Oaks, CA 91360-4231
Phone: (805) 267-9338
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 86064070
Registered Dietitian Taxonomy 133V00000X

Record details

NPI number1225553936
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSRDN
Sole proprietorYes
NPI enumeratedAugust 3, 2017
Last updated in NPPESFebruary 28, 2022
Certification dateFebruary 28, 2022
Mailing address509 Marin St Ste 228, Thousand Oaks, CA 91360-4231

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