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

Joanne Berthelsen LCSW LLC

Organization Addiction (Substance Use Disorder) Counselor · NPI 1124657721

Joanne Berthelsen LCSW LLC is an Addiction (Substance Use Disorder) Counselor in Oconomowoc, Wisconsin. Registered with an NPI since 2020.

In the registry since
2020
Specialties on file
2
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

830 Armour Rd Ste 2
Oconomowoc, WI 53066-3959
Phone: (262) 235-2350
Fax: (235) 804-8132
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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
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X

Record details

NPI number1124657721
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Joanne Berthelsen — Owner/Provider · (262) 235-2350
Other names Joanne Berthelsen Lcsw Llc
NPI enumeratedApril 6, 2020
Last updated in NPPESApril 6, 2020
Certification dateApril 6, 2020
Mailing address830 Armour Rd Ste 2, Oconomowoc, WI 53066-3959

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