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

Individual provider Clinical Social Worker · NPI 1427240720

Michael Sullivan, MSW, LCSW is a Clinical Social Worker in Billings, Montana. Practices as a sole proprietor. Licensed in Montana.

Licensed in
MT
In the registry since
2007
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.
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

304 Grand Ave
Billings, MT 59101
Phone: (406) 245-4566
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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 192 (MT)

Record details

NPI number1427240720
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW , LCSW
Sole proprietorYes
NPI enumeratedAugust 10, 2007
Last updated in NPPESJuly 10, 2018
Mailing address304 Grand Ave, Billings, MT 59101-5923

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