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

Big Sky Therapeutic Services, PLLC

Organization Counselor · NPI 1588966584

Big Sky Therapeutic Services, PLLC is a Counselor in Great Falls, Montana. Licensed in Montana. Registered with an NPI since 2010.

Licensed in
MT
In the registry since
2010
Specialties on file
15
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1601 2nd Ave N Ste 700
Great Falls, MT 59401-3288
Phone: (406) 205-0452
Fax: (406) 545-2276
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Community/Behavioral Health Agency (primary) Taxonomy 251S00000X
Counselor Taxonomy 101Y00000X
Mental Health Counselor Taxonomy 101YM0800X
Professional Counselor Taxonomy 101YP2500X
Behavior Analyst Taxonomy 103K00000X
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X
Social Worker Taxonomy 104100000X
Marriage & Family Therapist Taxonomy 106H00000X
Behavior Technician Taxonomy 106S00000X
Case Management Agency Taxonomy 251B00000X · Licence LCPC 1009 (MT)
Developmentally Disabled Services Day Training Agency Taxonomy 251C00000X
Public Health or Welfare Agency Taxonomy 251K00000X
Early Intervention Provider Agency Taxonomy 252Y00000X
Foster Care Agency Taxonomy 253J00000X

Record details

NPI number1588966584
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Brett Gilleo — Owner · (406) 240-2045
Other names Big Sky Therapy
NPI enumeratedNovember 23, 2010
Last updated in NPPESFebruary 25, 2023
Certification dateAugust 14, 2020
Mailing addressPo Box 6451, Great Falls, MT 59406-6451

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