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

Katherine Therese Mageau

Individual provider Mental Health Counselor · NPI 1124734272

Katherine Therese Mageau is a Mental Health Counselor in Seattle, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2023

Practice location Address checks out

3295 SW Avalon Way Apt 309
Seattle, WA 98126-2787
Phone: (206) 651-5242
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence MC61389318 (WA)

Record details

NPI number1124734272
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedJanuary 23, 2023
Last updated in NPPESJanuary 23, 2023
Certification dateJanuary 23, 2023

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