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

Mr. Jonathan Michael Williamsen II

Individual provider Clinical Social Worker · NPI 1356730360

Mr. Jonathan Michael Williamsen II is a Clinical Social Worker in Bellevue, Washington. Registered with an NPI since 2015.

In the registry since
2015

Practice location Address checks out

14270 NE 21st St
Bellevue, WA 98007-3720
Phone: (254) 653-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X

Record details

NPI number1356730360
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJanuary 14, 2015
Last updated in NPPESDecember 3, 2018
Mailing address6400 Southcenter Blvd, Tukwila, WA 98188-2547

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