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Margaretha Esther Klassen

Addiction (Substance Use Disorder) Counselor in Fresno, CA · enumerated 2012.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821349663

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Registry record

Entity type Individual (Type 1)
Name Margaretha Esther Klassen
Sex Female
Practice address 4705 N Sonora Ave Ste 113, Fresno, CA, 93722
Phone (559) 349-8951
Enumeration date Sep 19, 2012
Last updated in NPPES Sep 19, 2012

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier Type State Issuer
F1616037 Other CA DMV

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Margaretha Klassen practice?
The practice location on file with NPPES is in Fresno, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Margaretha Klassen?
The National Provider Identifier (NPI) for Margaretha Klassen is 1821349663, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-19.