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

Mr. Arnold Martin Horwitz, PHD

Individual provider Marriage & Family Therapist · NPI 1538559794

Mr. Arnold Martin Horwitz, PHD is a Marriage & Family Therapist in San Luis Obispo, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2015
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1605 Garnette Dr
San Luis Obispo, CA 93405
Phone: (805) 541-2752
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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 M5864 (CA)

Record details

NPI number1538559794
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 27, 2015
Last updated in NPPESJanuary 27, 2015

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