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Marcia Yamashiro, R.D.
NPI 1295800753 · Registered Dietitian · Concord, CA
Marcia Yamashiro, R.D. is a Registered Dietitian provider in Concord, CA (NPI 1295800753).
Provider details
- NPI number
- 1295800753
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- R.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 013873 (CA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(90/100 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
1868 Clayton Rd
Suite 220
Concord, CA 94520-2547
Phone: (925) 686-9316
Street-level locationGet directions
Mailing address
25579 Gold Ridge Dr
Castro Valley, CA 94552-5451
Registry dates
- Enumerated
- 2006-11-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marcia Yamashiro's NPI number?
- Marcia Yamashiro's National Provider Identifier (NPI) is 1295800753, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcia Yamashiro's specialty?
- Marcia Yamashiro is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Marcia Yamashiro located?
- Marcia Yamashiro's practice location on file with NPPES is 1868 Clayton Rd, Concord, CA 94520-2547.
- What is Marcia Yamashiro's phone number?
- The practice phone number listed in the NPPES registry for Marcia Yamashiro is (925) 686-9316.
- Is Marcia Yamashiro's NPI active?
- Yes — Marcia Yamashiro's NPI (1295800753) 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.