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

Individual provider Clinical Psychologist · NPI 1982756631

Dr. Keith Sonnanburg, PHD is a Clinical Psychologist in Seattle, Washington. Graduated from University of Washington School of Medicine in 1983, 43 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
43
Trained at
University of Washington School of Medicine
Licensed in
WA
In the registry since
2007
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

1818 Westlake Ave N Ste 122
Seattle, WA 98109-2777
Phone: (206) 654-3338
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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 PY 1704 (WA)

Record details

NPI number1982756631
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 16, 2007
Last updated in NPPESJune 10, 2022
Certification dateJune 10, 2022

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 1983 (43 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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