Mr. Raphael Holloway joined the Gateway Center in July 2016 as the Chief Executive Officer. Mr. Holloway is an accomplished leader with 20+ years of experience in the social services arena specializing in behavioral health, correction, homelessness and public health sectors. He has displayed a strong non-profit and state government business acumen and understands “how to change when change is hard”. Mr. Holloway is a proven professional with expertise in motivating human resources and aligning multiple groups with divergent objectives and priorities towards a common goal. He utilizes skills, theories, and strategies that are not only relevant but necessary for leading results based organization and team of professionals that desire to be “agents of change”. Mr. Holloway has displayed a commitment to the utilization of data; desire to utilize a human centered approach in service design; strong initiative and exceptional skills in leading an organization’s business. A native of Toledo, OH, Raphael received his B.A. in Child and Family Services and M.A in Mental Health Counseling from Bowling Green State University.

Monique Williams is an Accountant with over 20 years of experience in nonprofit and governmental accounting. Monique received her Bachelors of Business Administration majoring in Accounting and Masters of Professional Accountancy specializing in Accounting Information Systems from Georgia State University. She was the Director of Finance at Public Broadcasting for 13 years, and she successfully improved financial operations by introducing effective internal control, processes, and standards. Monique is a native Georgian who loves the Atlanta Falcons.

Greg Callihan is a life-long Georgian who has been involved in facilities maintenance for almost 20 years. He began working part-time in the apartment industry doing light maintenance work while on his spring and summer breaks from college. This part-time work led to his first experience working with persons just coming out of homelessness at The Welcome House. Greg spent over five years working at Welcome House, and became the Service Manager there -leading a team of maintenance and housekeeping employees. His experience there –working with people who had just gotten housing after living on the streets- created a desire to work more directly with people who were still homeless. Greg became the Maintenance Director of The ROCK, a homeless resource center in downtown Atlanta. He held this position until The ROCK merged into The Gateway Center in July 2005. Greg has been working at Gateway since before the doors opened for clients –he directed numerous teams in coordinating furniture donations and deliveries prior to Gateways grand opening. He has held the same position at Gateway while working for three companies –first through PCCI, then part of the Ohio Equities team, and finally as a Gateway employee starting in August 2009. While in college, Greg was pursuing a degree in Biblical Studies with a specialization in missions. Although he is not a missionary in any standard sense of the word, Greg views his work as part of the mission field. He enjoys his role as behind-the-scenes support for the incredible staff at The Gateway Center.

Tricia Callihan is the Director of Resource Development at Gateway Center, which is a homeless resource center in downtown Atlanta. She began her career with Gateway Center in 2018 as a Development Specialist and transitioned into her current role at the end of 2020. As the Director of Resource Development, she oversees all fundraising efforts, including grant submission, fundraising events, and individual, corporate, and foundation donor cultivation. Tricia earned a Masters in Professional Counseling from Georgia State University in 2000. She is committed to raising awareness regarding the barriers individuals and families who are experiencing homelessness encounter as they seek to transition to stable housing. After working in corporate America for 14 years, Tricia is thankful for the opportunity to serve in a capacity that makes a difference in the community she calls home.

Crystal Nivens is a seasoned Human Resources professional with 24 years of experience across nonprofit, healthcare, manufacturing, education, and retail sectors. She is dedicated to fostering inclusive workplaces and driving organizational success. Crystal earned a Bachelor of Science degree in Business Leadership from Robert Morris University in Pittsburgh, PA. Throughout her career, she has built strong relationships and made meaningful contributions to the community, including her involvement with Goodwill on the business advisory council. Beyond her professional endeavors, Crystal puts family first and is passionate about giving back to the community. She volunteers with organizations such as the Ronald McDonald House and Meals on Wheels, contributing to causes that make a positive difference in people's lives. As Crystal continues to thrive in her professional career, she remains dedicated to making a meaningful impact, fostering connections, and striving for excellence.

Tonya Boose is the Director of Residential Services, and she provides programmatic support for the Veterans Program, Evolution Center, Caroline’s Kitchen, & the Engagement Center at Gateway Center. She provides leadership, support, and guidance for all the programs she oversees. Tonya earned her BS in Marketing from York College and her MPA from Metropolitan College of New York. In 2000, after volunteering to help high-risk youths, Tonya became interested in the field of Social Services. In 2001, she began work as a Case Manager for The Salvation Army Jamaica Women’s Triage and Referral Shelter, ultimately becoming its Director of Social Services. In 2006, Tonya and her family moved to Georgia where she continued her passion for social service, and she joined the team at Gateway Center.

Amanda van Dalen is the Director of Residential Services and Coordinated Entry for the Gateway Center. Amanda began her career with the Gateway Center in 2013. As Director, she provides the program administration and clinical oversight for 80 units of housing at the Gateway Center which include beds for stabilization, employment and substance use. In addition, Amanda leads Gateway’s collaborative partnership with the Atlanta Continuum of Care to provide a “single point of entry” intake and assessment process for individuals experiencing homelessness in Atlanta. Amanda earned a Masters in Social Work from The University of Georgia in 2011 and has since then earned certification as a Licensed Clinical Social Worker in 2014. Amanda is committed to services and partnerships that will end chronic homelessness and make homelessness in general rare and brief for individuals and families in Atlanta. In her spare time, Amanda is a foster mom for Fulton County Department of Family and Children Services.

Kim Zapata, Ed.D., M.Ed., is an accomplished graduate of The University of Maryland and holds both a master's degree in education and a doctorate in adult education and human development from Grand Canyon University in Phoenix, Arizona. With her Dominican ancestry, she is fluent in both English and Spanish. Kim completed her Doctoral residency at Grand Canyon University and her clinical training at Johns Hopkins University. With over 10 years of experience in education, as well as mental and public health research, Kim has developed a special interest in non-profit leadership, human service work, and mental health care. Before joining Gateway Center, Kim served as the Director of Operations and Clinical Services, Educator, and Researcher. She has spent over a decade as an educator and department chief within a major public-school system, gathering extensive research experience in academic disparities among migrant learners and rare psychiatric disorders. Moreover, as a Director Kim collaborated with county officials, corporations, and key stakeholders on numerous successful fundraising initiatives.

Ashley Hutcherson is the Program Supervisor for Gateway Center’s Coordinated Entry Program (Clear Path). She began her career at Gateway Center 2 years ago. She received her Bachelors in Psychology and Human Services at Clayton State University.  She has worked in the social service field for 8 years. Most of her experience has focused on children, youth, and families within the foster care system.  Ashley is a native of Atlanta, Georgia.

Paul Williams is the Fulton County Coordinated Entry Supervisor. His main responsibility is to manage the day to day operations of the North and South Fulton Homeless Assessment Centers by cultivating partnerships in the community and assessing individuals experiencing homelessness. He began his career at Gateway Center in November 2017 as a Guest Service Agent (GSA) at the Evolution Center. In April of 2018, he stepped into the role of one of the first Clear Path Housing Assessors at Gateway Center’s main location. He served in that capacity until June 2019 when he went back to the Evolution Center as a Case Manager. In 2016, Paul graduated Cum Laude and with Departmental Honors from Morehouse College in Atlanta, Georgia with a Bachelor of Arts in Religion. Currently, he is pursuing a Master of Divinity (MDiv) degree at Beulah Heights University. He is a native of California, and the loving husband of Nicole and devoted dad to Kayla, Kameryn, and CJ.

Garrick Wade is a seasoned producer and strategic development professional with a strong foundation in brand partnerships and purpose-driven initiatives. With a background that bridges media, nonprofit work, and entrepreneurship, Garrick currently serves as Development Coordinator at Gateway Center, where he helps lead high-impact programs and resource-driven campaigns that directly support Atlanta’s unhoused population. His work is rooted in service, storytelling, and creating spaces where impact and intention meet.