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

Individual provider Clinical Psychologist · NPI 1558887182

Katherine Anne Nicolai, PHD is a Clinical Psychologist in Seattle, Washington. Practices as a sole proprietor. Licensed in California and Washington.

Licensed in
CA, WA
In the registry since
2017
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

635 NW Market St
Seattle, WA 98107-2711
Phone: (719) 338-2536
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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 PSY29225 (CA)
Clinical Psychologist Taxonomy 103TC0700X · Licence PY61184763 (WA)

Record details

NPI number1558887182
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedAugust 15, 2017
Last updated in NPPESFebruary 10, 2025
Certification dateFebruary 10, 2025

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