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

Michael Sullivan, MSW, Inc

Organization Clinical Social Worker · NPI 1063567493

Michael Sullivan, MSW, Inc is a Clinical Social Worker in Billings, Montana. Licensed in Montana. Registered with an NPI since 2007.

Licensed in
MT
In the registry since
2007
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

304 Grand Ave
Billings, MT 59101
Phone: (406) 245-4566
Fax: (406) 245-2441
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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 number1063567493
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Diane Sullivan — Business Manager · (406) 861-6389
NPI enumeratedJanuary 24, 2007
Last updated in NPPESSeptember 6, 2018
Mailing address304 Grand Ave, Billings, MT 59101-5923

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