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

Individual provider Clinical Social Worker · NPI 1740454057

Diana K Johnstone, LCSW is a Clinical Social Worker in Milwaukee, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2008.

Licensed in
WI
In the registry since
2008
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

4200 N Holton St
Milwaukee, WI 53212-1064
Phone: (414) 988-6980
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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 · Licence 7326123 (WI)

Record details

NPI number1740454057
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedApril 17, 2008
Last updated in NPPESMarch 26, 2013

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