About Us

What We Do

Mainstay provides human service and housing programs across Massachusetts, including permanent supportive housing and compassionate, person-centered home care. Our programs have helped hundreds of people live productive and stable lives in their own communities every day for all of these years.

Our History

Mainstay was founded in 1975 under the name Mental Health Programs, Inc. (later MHPI, Inc.)- to provide affordable, community-based housing to people with mental illness. In 1999, a service affiliate, Residential Support Services Inc. (RSSI), was founded to provide care and services to our residents and others in the community. Our mandate has since expanded to cover a variety of vulnerable populations, including low-income elders; people with intellectual, developmental, and physical disabilities; and the recently homeless. In 2019, the companies were merged under the name Mainstay to reflect our integrated programs and approach to care.


  • Larry Oaks

    President & CEO

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  • Christopher Andrews

    Director of Finance

  • Doreen Cummings

    Doreen Cummings

    Director of In-Home Services

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  • Susan Horner

    Director of Housing Services

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  • Avanelle Martin

    Director of Human Resources

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Mainstay Team

Heather Bacon

Lead RN

Constantinos Magimbi

Resident Service Coordinator

Tomas Neruda

Assistant Property Manager

Ronald Quimby

Assistant Director of Housing Services

Kathryn Soderholm

Program Administrator

Jamal Ward

Senior Residence Manager

Board of Directors

Jeanne M McHallam
Joyce Gair
Robert S. Manasse
Clifford Robinson
Newt H. Levee
Alice Rose

Our Locations

We manage supportive housing in these Massachusetts residential areas. Search for a specific town or click on our locations to learn more about them and the area!

*Looking for affordable housing or Homecare services?
Contact Us to see how we can help!