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

Joan S Simon Oncken, LMFT

Individual provider Marriage & Family Therapist · NPI 1720256183

Joan S Simon Oncken, LMFT is a Marriage & Family Therapist in Lynnwood, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2008
What do these letters mean?
LMFT — Licensed Marriage and Family Therapist
A therapist licensed to treat couples and families.

See every abbreviation used in this directory →

Practice location Address checks out

4215 198th St SW Ste 102
Lynnwood, WA 98036-6738
Phone: (425) 771-1914
Fax: (425) 771-0127
Show map & directions

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

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence LF00000836 (WA)

Record details

NPI number1720256183
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMFT
Sole proprietorYes
NPI enumeratedFebruary 19, 2008
Last updated in NPPESFebruary 19, 2008

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