What is Gwendolyn Ertl's NPI number?

Gwendolyn Ertl's National Provider Identifier (NPI) is 1982551339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gwendolyn Ertl's specialty?

Gwendolyn Ertl is listed in the NPPES registry with a primary specialty of School Psychologist (Behavioral Health & Social Service Providers).

Where is Gwendolyn Ertl located?

Gwendolyn Ertl's practice location on file with NPPES is 600 W Grand Ave, Porterville, CA 93257-2029.

What is Gwendolyn Ertl's phone number?

The practice phone number listed in the NPPES registry for Gwendolyn Ertl is (559) 793-2400.

Is Gwendolyn Ertl's NPI active?

Yes — Gwendolyn Ertl's NPI (1982551339) is active in the NPPES registry as of the last update on 2026-03-13.

IndividualActive

Gwendolyn Ertl

NPI 1982551339 · School Psychologist · Porterville, CA

Gwendolyn Ertl is a School Psychologist provider in Porterville, CA (NPI 1982551339).

Provider details

NPI number: 1982551339
Entity type: Individual
Primary specialty: School PsychologistBehavioral Health & Social Service Providers
Sole proprietor: No

Specialties & taxonomies

School PsychologistPrimary103TS0200X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(46/100 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

600 W Grand Ave

Porterville, CA 93257-2029

Phone: (559) 793-2400

Street-level locationGet directions

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Mailing address