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

Mary Katherine Nissen, LCSW

Individual provider Clinical Social Worker · NPI 1760735682

Mary Katherine Nissen, LCSW is a Clinical Social Worker in Ronan, Montana. Licensed in Alaska and Montana. Registered with an NPI since 2012.

Licensed in
AK, MT
In the registry since
2012
Specialties on file
3
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

407 Main St SW
Ronan, MT 59864-2710
Phone: (406) 210-8831
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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 66438 (MT)
Clinical Social Worker Taxonomy 1041C0700X · Licence 189560 (AK)
Social Worker Taxonomy 104100000X

Record details

NPI number1760735682
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedOctober 16, 2012
Last updated in NPPESDecember 1, 2023
Certification dateDecember 1, 2023

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