Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Margaretha Esther Klassen

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1821349663

Margaretha Esther Klassen is an Addiction (Substance Use Disorder) Counselor in Fresno, California. Registered with an NPI since 2012.

In the registry since
2012

Practice location Address checks out

4705 N Sonora Ave Ste 113
Fresno, CA 93722-3965
Phone: (559) 349-8951
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1821349663
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedSeptember 19, 2012
Last updated in NPPESSeptember 19, 2012

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