Mainstay Life Services

What Mainstay Life Services does

Mainstay Life Services is a 501(c)(3) nonprofit human services organization headquartered in Pittsburgh, Pennsylvania, that provides residential, community, behavioral, medical, and employment supports to people with intellectual disabilities and autism (ID/A) across Southwestern Pennsylvania. The organization was formed in 1999 through the merger of Horizon Homes (founded 1969) and Idlewood Center (founded 1971) and currently employs nearly 400 staff across 40+ community homes serving 100+ individuals ranging in age from their 20s to their 90s. Mainstay's service portfolio spans 24-hour Residential Services, specialized Prader-Willi Syndrome (PWS) Support across 9 dedicated homes (the only such program in Southwestern PA), Life Sharing (including a 2023 expansion to children with medically complex conditions), Supported Living, In-Home and Community Support, Community Participation Support, Employment Support, and Behavioral and Clinical Support. It also operates enTRUST Services, a 2023 wholly-owned financial services subsidiary offering Special Needs Pooled Trust, Representative Payee, and Benefits Counseling.

Mainstay has invested in a "Technology First" service model, becoming the first Pennsylvania provider to receive SHIFT Technology First Accreditation in 2021 (re-accredited through February 2026), opening its first remote-support home in 2022, and bringing remote monitoring in-house in 2024 with Mainstay employees delivering overnight remote support. A 2021 StationMD telehealth partnership (expanded to behavioral and psychiatric telehealth in 2022) is documented to have saved approximately $100K in ER costs over two years. The organization launched Housing Transition and Tenancy Sustaining Services in 2026 to extend into housing navigation and tenancy stabilization.

Mainstay's revenue is derived primarily from federal, state, and county government waiver funding, supplemented by private, corporate, and community foundation grants; individual, memorial, honorary, and planned gifts (including the Mainstay Legacy Society); event fundraising such as the annual Charlie Ross Memorial Charity Golf Outing and the Highmark Walk for a Healthy Community; and the United Way contributor-choice program. Services are not directly billed to clients. The organization's go-to-market is referral-based, leveraging memberships in ANCOR, PAR, RCPA, and TPA provider associations. Effective November 1, 2025, Mainstay affiliated with Keystone Human Services, becoming a subsidiary that operates alongside KHS as one of the largest providers of human services in Pennsylvania while retaining its own Board of Directors and Western Pennsylvania operational focus.

Name

Mainstay Life Services

Legal name

Mainstay Life Services

Website

https://mainstaylifeservices.org

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

251–500 employees

Short description

Mainstay Life Services is a Pittsburgh-based 501(c)(3) nonprofit providing residential, community, behavioral, employment, and technology-enabled supports to people with intellectual disabilities and autism in Southwestern Pennsylvania, operating 40+ homes with nearly 400 employees.

Ownership category

akta.pro rank

Product category

Intellectual Disability and Autism Services

NAICS

Residential Intellectual and Developmental Disability Facilities (623210), Services for the Elderly and Persons with Disabilities (624120), Vocational Rehabilitation Services (624310)

SIC

Services-Social Services (8300), Services-Nursing & Personal Care Facilities (8050)

akta.pro primary industry

Disability Services & Independent Living Support (BPAGAEAG)

akta.pro secondary industry

Special Needs & Supplemental Needs Trust Services (FSAAANAJ)

Keywords

• Intellectual disability services
• Autism support services
• Residential care services
• Community support programs
• Employment support services

Headquarters

HQ city

Pittsburgh

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Government Funding: Federal, state, and county government funding represents primary revenue source. Government funds cannot keep pace with inflation and are restricted in use.
2. Private Grants and Foundations: Grants from private, corporate, and community foundations supplement government funding.
3. Individual Donations: Individual gifts, memorial and honorary gifts, in-kind donations, and planned giving through Mainstay Legacy Society. Donations support enhancements like exercise and art programs, special therapies, adaptive medical equipment, home accessibility improvements.
4. Event Fundraising: Annual Charlie Ross Memorial Charity Golf Outing and Highmark Walk for a Healthy Community generate funds for the Irene and Walter Jacob Supplemental Needs Fund and organizational support.
5. United Way: Support through United Way's contributor choice program using code 959313.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels9 records

Core offering

Mainstay Life Services provides person-centered residential, community, behavioral, employment, and technology-enabled support services for people with intellectual disabilities and autism across Southwestern Pennsylvania. Services are delivered in 40+ community homes and through community-based programs, with a specialized Prader-Willi Syndrome program, in-house remote monitoring, telehealth partnerships, and the enTRUST Services financial subsidiary. The organization is supported primarily by federal, state, and county government funding, supplemented by foundation grants and donations.

Product overview

Mainstay Life Services provides a comprehensive portfolio of person-centered programs and services for people with intellectual disabilities and autism. The core offerings span residential programs (including specialized Prader-Willi Syndrome support in 9 dedicated homes), Life Sharing arrangements, Supported Living, In-Home and Community Support, Community Participation Support, Employment Support, and Behavioral and Clinical Support. A distinctive Technology First approach (Independence through Innovation) integrates Remote Supports, Telehealth via StationMD partnership, and assistive technologies to enhance independence. The organization also operates enTRUST Services as a subsidiary providing financial services, and launched Housing and Tenancy Services in 2026. Services are delivered across 40+ homes in Southwestern Pennsylvania, with a workforce of nearly 400 employees supporting 100+ individuals. In November 2025, Mainstay affiliated with Keystone Human Services to become one of the largest human services providers in Pennsylvania.

Differentiator

Problem solved

Functional benefit

Brands

• enTRUST Services: Financial services subsidiary providing Benefits Counseling, Special Needs Pooled Trust, Organizational Representative Payee Services, and Third-Party Trust Services for people with disabilities.

Products and services

• Residential Services 24-hour residential support in 40+ community homes across Southwestern PA serving 100+ people ranging from their 20s to 90s. Includes assistance with activities of daily living, medication administration, transportation, community activities, and person-centered care. For people with intellectual disabilities and autism.
• Prader-Willi Syndrome Support Specialized residential support for people living with Prader-Willi Syndrome (PWS), a rare genetic disorder causing chronic hunger, growth hormone deficiency, and behavior challenges. Mainstay is the only Southwestern PA provider with a dedicated PWS program, operating 9 homes supporting 12 adults.
• Life Sharing Shared living arrangements where families, friends, or community members welcome a person with intellectual disability and/or autism into their home. Mainstay has provided Life Sharing for over 25 years.
• Supported Living Individualized services for people who live independently but benefit from support and check-ins. Services ensure health and welfare including health maintenance, wellness activities, meal preparation, decision making, home management, and self-care.
• In-Home and Community Support (IHCS) Person-centered direct service assisting people with socialization, communication, self-help, decision making, and important life skills. Options are individualized and support skill acquisition for independent living and civic participation.
• Community Participation Support (CPS) Helps people discover opportunities for community inclusion, build interests, and develop skills. CPS encourages active participation in activities aligned with participant interests, preferences, gifts, choices, and strengths, integrated into desired community life.
• Employment Support Individualized job development and support including Community-Based Work Assessments, Job Development, Job Placement, and Job Stabilization. Helps people with intellectual disabilities and autism learn about skills, navigate job development, and receive on-the-job support for independence.
• Behavioral and Clinical Support Resiliency-building supports improving physical, social, and emotional health and wellness. Person-centered behavioral health services with 50+ years of collective clinician experience.
• Independence through Innovation (Technology Support) Technology First approach integrating technology solutions that enhance health, wellness, safety, and independence. Includes Remote Supports, Telehealth via StationMD partnership, and various assistive technologies such as communication boards, medication dispensers, smart home devices, and mobility aids.
• Housing and Tenancy Services Housing Transition and Tenancy Sustaining Services (HTTSS) supporting people with disabilities to navigate housing systems, prepare for tenancy, and maintain stable housing. Includes assistance with housing applications, developing housing plans, landlord coordination, and tenancy skills.
• enTRUST Services Financial services subsidiary providing Benefits Counseling, Special Needs Pooled Trust, Organizational Representative Payee Services, and Third-Party Trust Services to enrich lives of people with disabilities.

Quantifiable outcome

• 14% year-over-year increase in people served
• +4 more outcomes

Named customers12 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature5 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Keystone Human ServicescoreStrategic or Co-development Partner · 1 November 2025Official affiliation effective November 1, 2025, creating one of the largest providers of human services in Pennsylvania. KHS with Mainstay as subsidiary will serve Pennsylvania and beyond. Mainstay continues focus on Western Pennsylvania operations with its own Board of Directors. Partnership provides access to broader network of operational and administrative resources, expands programs and services, and enables innovation in quality support.
• Consulting for Human Services (CFHS)minorImplementation/ SI/ Consulting Partner · 1 January 2025Strategic advisory firm specializing in nonprofit mergers, acquisitions, and affiliations. Guided the affiliation process between Mainstay and Keystone Human Services.
• ShiftAbility (SHIFT)coreTechnology or Integration · 1 January 2022Partnership with ShiftAbility to accelerate technology efforts and achieve SHIFT Technology First Accreditation. SHIFT is an education and accreditation platform advancing and standardizing Technology First best practices for organizations serving people with intellectual disabilities and autism. Mainstay was first Pennsylvania provider to receive accreditation in 2021; re-accredited through February 2026.
• StationMDcoreTechnology or Integration · 1 January 2021Telehealth partnership delivering real-time medical consultation to people in all Mainstay residential programs through secure videoconferencing and connected care management. Expanded in 2022 to include Behavioral Health and Psychiatric Telehealth Services. Partnership aims to improve care experience, health outcomes, reduce costs, and improve staff work life. Has saved $100K in ER costs over 2 years. Recognized by HealthLeaders in 2023.
• ANCOR (American Network of Community Options and Resources)minorOthersAdvocacy membership organization advancing the ability of members to support people with intellectual and developmental disabilities to fully participate in their communities.
• PAR (Provider Association of Rehabilitation Organizations)minorOthersMembership organization representing provider organizations serving Pennsylvania's children and adults with autism or intellectual disability.
• RCPA (Rehabilitation and Community Providers Association)minorOthersMembership organization advocating for those in need, advancing public policies, serving as forum for exchange of information and experience, and providing professional support.
• TPA (The Provider Alliance)minorOthersMembership association for organizations providing supports to people with intellectual disability and their families.

Scale indicators9 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• The Arc: National organization on intellectual and developmental disabilities providing advocacy and direct services including residential and employment supports. Overlaps in IDD service delivery but operates as a federation.
• Easterseals: National nonprofit providing disability and community services including residential, employment, and therapy supports. Comparable mission but broader national scope and less specialization in IDD residential care.
• Keystone Human Services: Multi-state human services organization that became Mainstay's parent via November 2025 affiliation. Operates a broader IDD, autism, and behavioral health portfolio across Pennsylvania and internationally; useful scale comparator.

Direct peers

• Community Options: Nonprofit IDD services provider operating residential homes, day programs, and employment supports across multiple states. Comparable residential and community-based service delivery model.
• Bayada Home Health Care: Large home health services provider including pediatric and adult disability supports. Overlaps with Mainstay's In-Home and Community Support and Life Sharing for Children with Medically Complex Conditions.
• BrightSpring Health Services: Public company providing home & community-based health services including IDD, behavioral health, and pharmacy supports. Operates residential, day, and employment programs comparable to Mainstay's service lines.
• RHA Health Services: Nonprofit provider of IDD, behavioral health, and substance use services with residential, supported living, and community-based programs. Operates a comparable continuum of services to Mainstay.
• Merakey: Nonprofit human services organization providing IDD, behavioral health, and autism services across residential, community, and employment programs. Closely comparable nonprofit peer with similar continuum-of-care model.
• AHRC New York City: Large nonprofit IDD services organization in NYC providing residential, day, employment, and clinical supports. Comparable service portfolio and person-centered philosophy.
• Sevita Health (formerly The MENTOR Network): One of the largest US providers of IDD, behavioral health, and home & community-based services, operating residential, day, and supported living programs similar to Mainstay's portfolio. Closely aligned business model around person-centered disability supports.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/mainstaylifeservices
• Xx.com/MainstayLS
• LinkedInlinkedin.com/company/mainstay-life-services

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles22 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mainstay Life Services