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

Individual provider Clinical Psychologist · NPI 1134262884

Dr. James Robert Masson, PHD is a Clinical Psychologist in Olympia, Washington. Qualified in 1991, 35 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
35
Licensed in
WA
In the registry since
2007
Specialties on file
2
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

2118 Caton Way SW
Olympia, WA 98502-1105
Phone: (360) 754-4662
Fax: (360) 352-3289
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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 PY00001701 (WA)
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X · Licence PY00001701 (WA)

Record details

NPI number1134262884
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedFebruary 14, 2007
Last updated in NPPESJanuary 13, 2009
Mailing address2118 Caton Way Sw, Olympia, WA 98502-1105

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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