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

Dr. Ronald Marc Sharrin, PHD

Individual provider Adult Development & Aging Psychologist · NPI 1306142112

Dr. Ronald Marc Sharrin, PHD is an Adult Development & Aging Psychologist in Topanga, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2011
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

20774 Hillside Dr
Topanga, CA 90290-3615
Phone: (310) 455-1200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Development & Aging Psychologist (primary) Taxonomy 103TA0700X · Licence PSY5775 (CA)

Record details

NPI number1306142112
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 27, 2011
Last updated in NPPESJanuary 27, 2011