Group Main Stream
- Company typePrivate
- Founded1981
- HeadquartersWestbrook, United States
- Headcount101–250
- GTM typeB2C
- OfferingServices
Group Main Stream firmographics
Firmographics- Name
- Group Main Stream
- Legal name
- 3Rivers, Incorporated
- Website
- https://gmsme.org
- Company type
- Private
- Founded year
- 1981
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Ownership category
- akta.pro rank
Group Main Stream industry classification
Industry- Product category
- Disability Support Services
- NAICS
- Services for the Elderly and Persons with Disabilities (62412), Residential Intellectual and Developmental Disability Facilities (62321), Vocational Rehabilitation Services (62431)
- SIC
- Services-Social Services (8300)
- akta.pro primary industry
- Disability Services & Assistive Solutions (Accessibility, Assistive Tech) (BPAGALAM)
- akta.pro secondary industry
- Disability Services & Independent Living Support (BPAGAEAG)
Keywords
Where Group Main Stream is headquartered
LocationHeadquarters
- HQ city
- Westbrook
- HQ country
- United States
- HQ region
- North America
Offices4 records
Markets served
Group Main Stream business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Others
Distribution channels1 record
Marketing channels4 records
Group Main Stream product offering
Product offeringCore offering
Group Main Stream, operating as 3Rivers, provides residential and community-based disability support services for adults with intellectual disabilities in Maine. The organization delivers shared living arrangements, group homes, independent living support, intermediate care facility (ICF) services, case management, employment support, assistive technology services, and professional training programs designed to promote independence and community inclusion.
Product overview
3Rivers is a unified service organization formed by the merger of GMS (Group Main Stream), Uplift, and IAM. The organization provides a comprehensive portfolio of disability support services across Maine, encompassing residential services (Shared Living, Group Homes, Independent Living, ICF/Treats Falls House), community participation services, employment support, assistive technology services, case management, and professional training programs. These services are designed to promote independence, dignity, and inclusion for individuals with disabilities throughout Maine.
Differentiator
Problem solved
Functional benefit
Products and services
- Shared Living
Companies that use Group Main Stream
Customer profileSegments1 record
Ideal customer profiles1 record
Group Main Stream technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Group Main Stream partnerships and signals
Strategic signalRecent moves4 records
Expansion highlights4 records
Group Main Stream competitors and assessment
Company assessmentDirect peers
- BrightSpring Health Services: A large publicly traded provider of home and community-based health and human services, including I/DD residential, employment, and case management offerings that directly overlap with 3Rivers' service mix — only at much greater scale and with a for-profit model.
- Sevita Health: National provider of home and community-based services for individuals with intellectual and developmental disabilities, operating shared living, group homes, and day programs analogous to 3Rivers' portfolio across multiple states.
- Easterseals: A long-established national nonprofit providing disability and community-based services including residential support, employment, and assistive technology — a direct nonprofit counterpart to 3Rivers operating at significantly greater scale.
- The Arc: National nonprofit organization supporting people with intellectual and developmental disabilities through residential, employment, and advocacy services — a close nonprofit peer with overlapping service categories.
- United Cerebral Palsy: National nonprofit providing disability services including residential, community living, employment, and assistive technology supports — directly comparable to 3Rivers in service breadth and mission focus.
- RHA Health Services: Multi-state provider of residential, community, and behavioral health services for people with I/DD, offering a comparable operating model across the Southeast and Mid-Atlantic that mirrors 3Rivers' programmatic footprint.
- Penn-Mar Human Services: Mid-Atlantic nonprofit providing residential, day, employment, and community-based services for people with I/DD — closely analogous to 3Rivers as a regional nonprofit with a comparable service portfolio and direct-delivery model.
- Community Options: National nonprofit providing residential, employment, and community-based services for people with I/DD — directly comparable mission and service model to 3Rivers.
Broad incumbents
- Bayada Home Health Care: Large national home and community-based care provider offering overlapping disability, pediatric, and adult services — relevant as a broader incumbent in HCBS with greater scale but a wider service portfolio.
Regional players
- Mains'l Services: Disability services nonprofit with presence in the Northeast providing community-based, employment, and residential supports for people with I/DD — a thematically aligned peer serving an adjacent geography.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Group Main Stream social profiles
Digital presenceGroup Main Stream financial estimates
Financial estimateRevenue estimate
Valuation estimate
Group Main Stream leadership team
Management profileNumber of profiles
Group Main Stream funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Group Main Stream M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Group Main Stream
What does Group Main Stream do?
Group Main Stream, operating as 3Rivers, provides residential and community-based disability support services for adults with intellectual disabilities in Maine. The organization delivers shared living arrangements, group homes, independent living support, intermediate care facility (ICF) services, case management, employment support, assistive technology services, and professional training programs designed to promote independence and community inclusion.
Is Group Main Stream a public or private company?
Group Main Stream is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was Group Main Stream founded?
Group Main Stream was founded in 1981. It employs 101 to 250 people.
Where is Group Main Stream based?
Group Main Stream is headquartered in Westbrook, United States, in the North America region.
Who are Group Main Stream's main competitors?
Direct peers on record are BrightSpring Health Services, Sevita Health, Easterseals, The Arc, United Cerebral Palsy, RHA Health Services, Penn-Mar Human Services and Community Options. Bayada Home Health Care is listed as a broad incumbent. Mains'l Services is listed as a regional player.
Does Group Main Stream have an API?
No public API is recorded for Group Main Stream.
What industry is Group Main Stream in?
Group Main Stream's product category is Disability Support Services. Its primary akta.pro industry code is BPAGALAM, Disability Services & Assistive Solutions (Accessibility, Assistive Tech), with a secondary code of BPAGAEAG, Disability Services & Independent Living Support. Its NAICS code is 62412 and its SIC code is 8300.