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Brenda O'Day, RD, CNSD
NPI 1992916423 · Registered Dietitian · San Diego, CA
Brenda O'Day, RD, CNSD is a Registered Dietitian provider in San Diego, CA (NPI 1992916423).
Provider details
- NPI number
- 1992916423
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RD, CNSD
- Sex
- Female
- Sole proprietor
- Yes
- License
- R720326 (CA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
7901 Frost St
San Diego, CA 92123-2701
Phone: (858) 939-3586
Fax: (619) 588-4871
Street-level locationGet directions
Mailing address
374 Aldwych Rd
El Cajon, CA 92020-2202
Registry dates
- Enumerated
- 2007-05-25
- Last updated
- 2007-07-08
Frequently asked questions
- What is Brenda O'Day's NPI number?
- Brenda O'Day's National Provider Identifier (NPI) is 1992916423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brenda O'Day's specialty?
- Brenda O'Day is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Brenda O'Day located?
- Brenda O'Day's practice location on file with NPPES is 7901 Frost St, San Diego, CA 92123-2701.
- What is Brenda O'Day's phone number?
- The practice phone number listed in the NPPES registry for Brenda O'Day is (858) 939-3586.
- Is Brenda O'Day's NPI active?
- Yes — Brenda O'Day's NPI (1992916423) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.