IndividualActive
John Brett, R.D.
NPI 1962627679 · Registered Dietitian · Fontana, CA
John Brett, R.D. is a Registered Dietitian provider in Fontana, CA (NPI 1962627679).
Provider details
- NPI number
- 1962627679
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- R.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 922705 (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
9961 Sierra Ave
Fontana, CA 92335-6720
Phone: (909) 427-7260
Fax: (909) 427-4151
Street-level locationGet directions
Mailing address
447 W Colorado Blvd
Monrovia, CA 91016-2646
Registry dates
- Enumerated
- 2007-04-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Brett's NPI number?
- John Brett's National Provider Identifier (NPI) is 1962627679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Brett's specialty?
- John Brett is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is John Brett located?
- John Brett's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is John Brett's phone number?
- The practice phone number listed in the NPPES registry for John Brett is (909) 427-7260.
- Is John Brett's NPI active?
- Yes — John Brett's NPI (1962627679) 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.