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

Arthur James Koster

Individual provider Marriage & Family Therapist · NPI 1811886302

Arthur James Koster is a Marriage & Family Therapist in Venice, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2025

Practice location Address checks out

618 Indiana Ave Apt 3
Venice, CA 90291-3057
Phone: (559) 392-3193
Show map & directions

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

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 155585 (CA)

Record details

NPI number1811886302
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJune 30, 2025
Last updated in NPPESJune 30, 2025
Certification dateJune 30, 2025
Mailing address618 Indiana Ave Apt 3, Venice, CA 90291-3057

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