To reach any staff member, please call our main office at 631.277.8300.

Executive Team

Sister Pat Griffith, DMin., LMSW

Executive Director


Click here for a message from Sister Pat.

Joseph Mercurio

Associate Executive Director


"Begin with the end in mind" is a philosophy that Joe keeps in mind while working to better Mercy Haven's programs. He particularly likes knowing that success in the non-for-profit world is measured in the number of lives that he can change. "What I likes best about working at Mercy Haven," explains Joe, "is being part of a team that is developing business solutions to ensure the future success of the agency." He finds inspiration in Mercy Haven's mission, people, and day-to-day challenges. 

Jackie Burbridge

Director of Development

Being in a role that is responsible for the way Mercy Haven interfaces with the community, Jackie enjoys being involved in virtually all aspects of the work the agency does. She finds it fulfilling to come to work each day and apply her skills towards the mission of helping others. “What I like most about working here is the assistance we provide to those who need it most and the way we stand ready to help our neighbors in need without equivocation” she explains. “I see Mercy Haven expanding the critical services we provide as we continue growing and strengthening our relationships with our community partners.”

Jenelle Moran, LCSW

Compliance Officer


Considering how far Mercy Haven has come since it was founded in 1985, Jenelle looks forward to seeing the agency continue to expand the services it provides and the number and type of people it can provide help to. "As a social worker, I always knew I would work for an organization whose focus was on the people they could help, and not the amount of money they could make," she says. "I like working for an agency whose mission of compassion and a desire to help those most at risk is always felt and is embedded in all aspects of the agency's practices."

John Murray

Director of Business Management


"As Chief Financial Officer, I like that I am involved in almost all aspects of the agency’s operation," says John. "Although I come from a financial background, I enjoy being involved with the daily operational issues that  we face each day, as well as getting involved with the fund raising events." John also enjoys working with Mercy Haven because he feels that he is a part of a team of dedicated individuals focused on maintaining and improving a successful agency. One of his favorite quotes is: “We are responsible for actions performed in response to circumstances for which we are not  responsible."

Brian Zwolak



“Mercy Haven presents a setting in which the opportunity to change the world, whether on a large or small scale, is right around the corner.” As the agency’s Controller, Brian takes pride in witnessing the manner in which fiscal operations have a decisive impact on those Mercy Haven serves. He enjoys the positive work environment and team based philosophy that facilitates creative solutions to the challenges faced in carrying out the agency’s mission. As for the future of Mercy Haven, Brian envisions Mercy Haven “evolving over time to serve additional segments of the homeless and at-risk communities, while diversifying its operations in an effort to ensure adequate funding.”

Program Planning Team

Imran Ahmad

Director of Management Information Systems (MIS)


Imran Ahmad joined Mercy Haven because it offered him an opportunity to step out of the technical environment to use his skills for a greater good. "What I enjoy most about my position as Director of MIS," explains Imran, "is the chance to integrate technology to simplify the workings of a complex agency." Imran sees Mercy Haven's future resulting in broader services for Long Islanders who are homeless, living with mental illness or living in poverty. One of Imran's favorite quotes is: "from what we get, we can make a living; what we give, however, makes a life."

John Castellano

Attorney-in-Charge, Mercy Advocacy Program (MAP)


Unlike protections offered by the US Constitution for the poor who are facing criminal charges, there is no constitutional right to counsel for low-income people who are facing a civil legal emergency.  In 1997, John joined Mercy Haven and established MAP to provide this type of counsel to those most in need.  "What I like most about Mercy Haven is our ability to provide desperately needed, safe, and affordable housing to the poor, particularly those living with a serious and persistent mental illness and/or the impairments of advanced age," says John. Having focused his more than 30-year career in law on the needs of the poor and underserved, he provides free legal services to a population virtually without other access to counsel. A philosophy that John lives by is: "Whatever you do for the least of my sisters and brothers, you do unto Me."

Greg Mangini
Director of Facilities Management

As the owner of 32 properties and operator of nearly 100 units of housing throughout Nassau and Suffolk counties, Mercy Haven’s facilities management team keeps very busy! Greg’s background in facilities management for the NYPD has more than prepared him for the task of keeping Mercy Haven’s homes safe, clean and well maintained for our residents. “I like working at Mercy Haven because of the caring of all individuals that are associated with the company,” explains Mangini, “and I like the idea of being able to help those that sometimes can’t help themselves.” Greg foresees a bright future for Mercy Haven. “My hope for the future of our facilities department is to ensure that all participants have an enriching experience while living with Mercy Haven and to be part of the expansion of our housing which will help carry the mission to even more people in need.”

Donna O'Hearon, LMSW
Director of Supportive Housing and Services

“As a social worker I have always been drawn to working with agencies that are service driven. Working with the most vulnerable individuals within communities has always been what I do,” says Donna. Her favorite quote, by Henry Van Dyke sums up this commitment: “to desire and strive to be of some service to the world, to aim at doing something which shall really increase the happiness and welfare and virtue of mankind- this is a choice which is possible for all of us.” Donna loves the opportunities for growth Mercy Haven provides to both residents and staff. “I love hearing from the residents who so often tell me how grateful they are to Mercy Haven,” she explains. “I love to see their growth, the growth of the staff who work with them and the positive difference being made in the lives of individuals and families.

Lorrie Oricoli
Director of Behavioral Health Services
What Lorrie likes best about being part of Mercy Haven is that she belongs to a team that has the ability to effect change for so many people.  "I work with such talented, caring, and knowledgeable people, who continually give 100% to the job and truly care about the mission of the agency," she says. As for why she chose to work for a not-for-profit corporation, Lorrie says "I don't think I made a distinction between profit and not-for-profit. My ultimate objective was to be part of an organization that could provide positive changes to those who need it most."

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