Isaac Diaz, MPH, LDN, CPT, CHES
NPI 1386402188 · Registered Dietitian · Rancho Cucamonga, CA
Isaac Diaz, MPH, LDN, CPT, CHES is a Registered Dietitian provider in Rancho Cucamonga, CA (NPI 1386402188).
Provider details
- NPI number
- 1386402188
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MPH, LDN, CPT, CHES
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Dietary & Nutritional Service Providers
- Nutritionist133N00000X
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES 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
Mailing address
Registry dates
- Enumerated
- 2024-03-07
- Last updated
- 2026-01-15
- Certified
- 2026-01-15
Frequently asked questions
- What is Isaac Diaz's NPI number?
- Isaac Diaz's National Provider Identifier (NPI) is 1386402188, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isaac Diaz's specialty?
- Isaac Diaz is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Isaac Diaz located?
- Isaac Diaz's practice location on file with NPPES is 6929 Valatta Pl, Rancho Cucamonga, CA 91701-8656.
- What is Isaac Diaz's phone number?
- The practice phone number listed in the NPPES registry for Isaac Diaz is (909) 710-5794.
- Is Isaac Diaz's NPI active?
- Yes — Isaac Diaz's NPI (1386402188) is active in the NPPES registry as of the last update on 2026-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.