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

Individual provider Clinical Child & Adolescent Psychologist · NPI 1437425774

Matthew O'Byrne, PHD is a Clinical Child & Adolescent Psychologist in San Rafael, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2012
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

2175 Francisco Blvd E
San Rafael, CA 94901-5510
Phone: (415) 457-1910
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Child & Adolescent Psychologist (primary) Taxonomy 103TC2200X · Licence PSY16458 (CA)

Record details

NPI number1437425774
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMarch 30, 2012
Last updated in NPPESMarch 30, 2012

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