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

Individual provider Social Worker · NPI 1346750650

Karla Abigail Islas-Kostszewa is a Social Worker in Garden Grove, California. Works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2017
Specialties on file
3
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Practice location Address checks out

10331 Stanford Ave
Garden Grove, CA 92840-6351
Phone: (714) 663-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • Po Box 845, Los Alamitos, CA 90720-0845 — (949) 385-0092

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 96754 (CA)
Social Worker Taxonomy 104100000X · Licence ASW77339 (CA)
Mental Health Counselor Taxonomy 101YM0800X

Record details

NPI number1346750650
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedOctober 2, 2017
Last updated in NPPESMay 18, 2026
Certification dateMay 18, 2026

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