Trinity Center | Walnut Creek

Trinity Center Team

Leslie Gleason, Executive Director

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Trinity Center welcomes a new Executive Director! Leslie comes to us with 30 years of leadership experience in which she has demonstrated a record of success delivering consistent homeless service programs, building community collaboration, and developing strong teams in community-based organizations and government agencies in Massachusetts and California including SHELTER, Inc., and prior to that was Director of Housing Programs with the Housing Authority of the City of Alameda and the Massachusetts State Department of Housing and Community Development Leslie graduated from Yale University, holds a Master of Divinity from Episcopal Divinity School and completed graduate-level coursework in public policy at the University of Massachusetts/Boston. She enjoys traveling, movies, and college women’s basketball. Leslie is grateful to be part of this community that is committed to helping people “meet their basic needs and reach for their dreams.”

Donna Colombo,  Past Executive DirectorDonna Colombo

Long-time Executive Director and Trinity Center founder, Donna Colombo welcome’s a new Executive Director, Leslie Gleason.  Under Donna’s leadership, Trinity Center grew from a small community service provider to a robust and trusted program that provides over 15,000 services a year! Donna is retiring after seven years of dedicated service and we are so grateful for her leadership, dedication and community advocacy. Donna will remain in her current role during the transition.

Pamela Arend McGrath, Development Director
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Pam McGrath originally joined Trinity  Center as the coordinator for the Evening Program. She has played a few different roles over the years, and today, she is responsible for fund development. Pam is a mid-westerner who left the family farm to study and travel abroad and all over the U.S. before landing in the Bay Area. She has appreciated experiencing many flavors of life. She is proudly passionate about advocating for vulnerable people and helping create pathways for equity and dignity. Pam has done this through her work in corporate and non-profit finance and management. Whether working on growth opportunities, cultivating support, collaborating on processes or policies, or participating in boots on the ground advocacy, she is bolstered by her firm belief that every person is worthy of support and capable of taking their own next step toward success. She wants everyone to join in these efforts and support Trinity Center’s mission!

Marjolein DassMarjolein Daas, Associate Director
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Marjolein Daas, Associate Executive Director, joined the Trinity Center team as a volunteer in 2017 and after a year of volunteering became part of the staff, building member services and developing pilot programs to meet the evolving needs of vulnerable people in our community.  She is originally from the Netherlands and has a bachelor’s degree in Social Work. She mostly worked in forensic rehabilitation facilities, focusing on substance use prevention and crime prevention. Marjolein has always been drawn towards management within the social services and became familiar with coaching and giving guidance to the corporate culture.

“I started volunteering for Trinity Center right after I moved to the US and immediately felt welcomed and accepted. A place where everyone knows my name is a statement that I personally felt and therefore I got an even better understanding of the importance of community. To me this shows the positive effect Trinity Center has, not only on our members but also on our community.”

Moji Shobeiri, Business and Operations Manager
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Moji started volunteering at the Trinity Center as a fund development team member in mid 2017 and joined the Trinity Center Team as the Business and Operations Manager in August 2021.

He has earned his Master’s degree in Business Administration (MBA) from California Lutheran University in Thousand Oaks, CA., and has owned and operated small businesses since 1984.
Moji also holds a California Real Estate Broker’s License and has a proven record in assisting families in making the right move since 1989.
His passion for social justice and his service-oriented nature is harmonious with the mission and vision of the Trinity Center. Please contact him with your suggestions and new ideas to help him in serving at the highest level of standard and to exceed community expectations.

Scott Garvey, Member Advocate & Substance Use Disorder Counselor
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Scott became a part of the Trinity Center team in November of 2016 when he was hired part-time for the evening program winter shelter. He then accepted a full time position with Trinity as a Member Advocate in February of 2017.

Scott has a degree in both Addiction Counseling and Sociology. Since his employment at Trinity Center, he has attained his license in Substance Use Disorder Treatment in the state of California.

Scott has tremendous compassion and believes everyone deserves to be treated with respect. He is an advocate for giving second chances, and is eager to assist with the Trinity Center mission of being a doorway to opportunity for all those in need. Please feel welcome to introduce yourself to Scott the next time you visit the Trinity Center!

Patty Purvis-Thielman

Patty Purvis-Thielman, Front Desk/Registrar
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Patty joined Trinity Center in April 2019. Recently retired after 15 years with the Acalanes Union HSD, she was their Technology Help Desk and Webmaster.  Working for over 40 years in technology support, she has fine-tuned customer support skills.   Since her retirement from the school district she has worked as a receptionist for a local car dealership.  She strongly believes in the inherent worth and dignity of every person and is excited to find a new “work home” here at Trinity Center.

Kevin Sugrue

Kevin Sugrue, Operations Assistant
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Kevin manages the daily food program at Trinity Center.  Most often you can find him in the kitchen, preparing meals, stocking supplies and helping members with breakfast and lunch.

Kevin is formerly homeless.  He began volunteering for Trinity Center in Winter 2013.  When a part-time position at the Trinity Center became available, Kevin applied for and secured the position. Subsequently, he was offered a full time role as Operations Assistant. His employment has empowered  him to purchase a used car and to secure and sustain an apartment in the bay area. Kevin always appreciates food and other kitchen donations.

Tommy Edwards, Operations Assistant Tommy Edwards
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Tommy began volunteering his time with the Trinity Center in 2015 and was hired as a staff member for Trinity’s first winter shelter. Tommy has previous experience working closely with adults whose lives have been burdened by substance abuse and other addictions. He is passionate about missionary outreach, having just returned from his second trip to Haiti where he helped construct an orphanage. Tommy loves serving the Trinity Center members and managing the generous donations from the community. Look for Tommy the next time you stop by with donations!

John Waichira, Member Advocate
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John joined the Trinity Center team as a Member Advocate in 2020. He has previously worked in capacity building programs for vulnerable communities with both non-profit and housing coops.

He is passionate about a profession in which he can help others.  He believes that everyone has the potential and capability to change and improve their situation with the appropriate support, information and resources.

He is keen and committed to contributing to Trinity Center’s efforts to build a community that promotes safety, friendship, warmth, respect and caring for each other. John has a Bachelor of Arts Degree in Human Development Studies and an Associate in Social Work.

He is grateful to be part of this community and is eager to help people find opportunities that will assist them to move to the next level in their lives. He is enthusiastic to see members realize their dreams.

Please feel welcome to stop by and say hi to John, the next time you are at Trinity Center!

Jon Lawrence, Young Adult Coordinator 
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Jon joined the Trinity Center Team in mid 2020 to help create and implement the Transition Age Youth program. Jon earned his Bachelor’s Degree from UC Santa Cruz in Sociology and Psychology and has worked extensively with youth and young adults in Richmond and Oakland for the past decade. He most recently created a youth-martial arts program that successfully employed up to ten coaches, and contracted with many East Bay Public Middle and Elementary Schools. Jon believes that success begins with mental and physical wellness, and has always been driven to give back to our future generation of leaders. He lives with his wife in the East Bay and hopes to have children of his own someday.

In his spare time, Jon loves to train in the Thai martial art of Muay Thai Kickboxing.  He likes to hike, bike, run, or do anything that involves fitness. He also enjoys traveling, painting, and working on the many projects in his backyard. He is also the proud father of a Brazilian Horned Frog named Ringo. Please feel free to say “hey” to Jon on your next visit to Trinity Center!


(925) 949-8712
Mailing Address:
P.O. Box 126, Walnut Creek, CA 94597
Service Address:
1888 Trinity Avenue, Walnut Creek, CA 94596

1888 Trinity Avenue, Walnut Creek, CA 94596

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