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

Individual provider Clinical Psychologist · NPI 1306975313

Dr. Ronald Haimowitz, PHD is a Clinical Psychologist in Napa, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
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

531 Jefferson St
Napa, CA 94559-3236
Phone: (707) 255-8540
Fax: (707) 251-8540
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY7930 (CA)

Record details

NPI number1306975313
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMarch 5, 2007
Last updated in NPPESJuly 8, 2007

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