IndividualActive
Michael Mercer, RDN, CNSC
NPI 1255296315 · Registered Dietitian · San Diego, CA
Michael Mercer, RDN, CNSC is a Registered Dietitian provider in San Diego, CA (NPI 1255296315).
Provider details
- NPI number
- 1255296315
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RDN, CNSC
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Basic profile(47/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
83% 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
4647 Zion Ave
San Diego, CA 92120-2507
Phone: (619) 528-5000
Street-level locationGet directions
Mailing address
11875 Caminito De Las Missiones
San Diego, CA 92128-3343
Registry dates
- Enumerated
- 2025-12-22
- Last updated
- 2025-12-22
- Certified
- 2025-12-21
Frequently asked questions
- What is Michael Mercer's NPI number?
- Michael Mercer's National Provider Identifier (NPI) is 1255296315, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Mercer's specialty?
- Michael Mercer is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Michael Mercer located?
- Michael Mercer's practice location on file with NPPES is 4647 Zion Ave, San Diego, CA 92120-2507.
- What is Michael Mercer's phone number?
- The practice phone number listed in the NPPES registry for Michael Mercer is (619) 528-5000.
- Is Michael Mercer's NPI active?
- Yes — Michael Mercer's NPI (1255296315) is active in the NPPES registry as of the last update on 2025-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.