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

Individual provider Psychologist · NPI 1588938021

Dr. Ryan Henderson, PHD is a Psychologist in Seattle, Washington. Registered with an NPI since 2012.

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

1660 S Columbian Way
Seattle, WA 98108-1532
Phone: (206) 277-3932
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1588938021
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMarch 1, 2012
Last updated in NPPESMarch 1, 2012
Mailing address1660 S Columbian Way, Seattle, WA 98108-1532

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