Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Brenda Cathleen O'Day, RD, CNSD

Individual provider Registered Dietitian · NPI 1992916423

Brenda Cathleen O'Day, RD, CNSD is a Registered Dietitian in San Diego, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

7901 Frost St
San Diego, CA 92123-2701
Phone: (858) 939-3586
Fax: (619) 588-4871
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence R720326 (CA)

Record details

NPI number1992916423
Entity typeIndividual (Type 1)
GenderFemale
Credentials RD , CNSD
Sole proprietorYes
NPI enumeratedMay 25, 2007
Last updated in NPPESJuly 8, 2007

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