What is Janet Johnston's NPI number?

Janet Johnston's National Provider Identifier (NPI) is 1891583068, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Janet Johnston's specialty?

Janet Johnston is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).

Where is Janet Johnston located?

Janet Johnston's practice location on file with NPPES is 12100 Montecito Rd Unit 150, Los Alamitos, CA 90720-5845.

What is Janet Johnston's phone number?

The practice phone number listed in the NPPES registry for Janet Johnston is (626) 644-6045.

Is Janet Johnston's NPI active?

Yes — Janet Johnston's NPI (1891583068) is active in the NPPES registry as of the last update on 2025-04-28.

IndividualActive

Janet Johnston

NPI 1891583068 · Registered Dietitian · Los Alamitos, CA

Janet Johnston is a Registered Dietitian provider in Los Alamitos, CA (NPI 1891583068).

Provider details

NPI number: 1891583068
Entity type: Individual
Primary specialty: Registered DietitianDietary & Nutritional Service Providers
Sex: Female
Sole proprietor: Yes

Specialties & taxonomies

Registered DietitianPrimary133V00000X
Dietary & Nutritional Service Providers

Profile Score

Basic profile(48/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
1 yr 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

12100 Montecito Rd Unit 150

Los Alamitos, CA 90720-5845

Phone: (626) 644-6045

Street-level locationGet directions

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Mailing address