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Our Directors

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Donna Donaghy Final Headshot 12.29.25.jpg

Donna Donaghy

Executive Director

“Mission-driven work is the most rewarding, and as Executive Director, I have the responsibility and privilege of guiding the vision and direction of Mercy Haven while staying closely connected to the people and programs that bring our mission to life,” says Donna Donaghy. “From organizational leadership and strategic planning to working alongside staff and engaging with the individuals and families we serve, my role allows me to ensure that every part of our work is aligned with our values and purpose.”

“Mercy Haven is a small organization that makes a big impact,” she continues. “We are small enough to truly know those we serve, to listen to their stories, and to respond with care and intention. I am deeply committed to our work supporting individuals and families who are too often left behind, and to honoring their dignity, resilience, and potential.”

In a time marked by uncertainty and ongoing challenges, Donna is inspired by Mercy Haven’s steadfast commitment to community and believes the agency will continue to play a vital role on the front lines of rebuilding and strengthening Long Island, both now and in the years ahead. Her favorite quote, from Frederick Buechner, describes one’s calling as ‘the place where your deep gladness and the world’s deep hunger meet.’ “I love how this reminds us that leadership and service, at their best, are rooted in both purpose and joy.”

ERIN GALANTE

Erin Galante

Chief Operating Officer

MICHAEL ARNOLD

Michael Arnold

Chief Administrative Officer

JOHN MURRAY

John Murray

Chief Financial Officer

CIARA JENSEN

Ciara Jensen

Chief Development Officer

DONNA O'HEARON

Donna O’Hearon

Director of Residential Services

STEPHANIE WARNKEN

Stephanie Warnken

Director of Supportive Services

LORI ETHERIDGE

Lori Etheridge

Director of Finance

GREG MANGINI

Greg Mangini

Director of Facilities Management

CRYSTAL SMITH

Crystal Smith

Associate Director of Congregate Care

HEIDI HALLER

Heidi Haller

Associate Director of Development

ISABELLE LAMY

Isabelle Lamy

Associate Director of Human Resources

KRISTYN DAILEY

Kristyn Dailey

Associate Director of Supportive Housing & Services

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