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

Austin Owen Koestner, MS

Individual provider Marriage & Family Therapist · NPI 1952118960

Austin Owen Koestner, MS is a Marriage & Family Therapist in Monrovia, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2024
What do these letters mean?
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

815 W Foothill Blvd
Monrovia, CA 91016-1913
Phone: (909) 333-5578
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 152003 (CA)

Record details

NPI number1952118960
Entity typeIndividual (Type 1)
GenderMale
Credentials MS
Sole proprietorYes
NPI enumeratedDecember 12, 2024
Last updated in NPPESDecember 24, 2024
Certification dateDecember 24, 2024
Mailing address225 S Ivy Ave, Po Box 4, Monrovia, CA 91016-5360

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