Leadership Team

Dawn Quattlebaum

Chief Executive Officer

Dawn Quattlebaum has been named Chief Executive Officer. Ms. Quattlebaum has more than 30 years experience in health care, senior services, senior housing, and area agency on aging services.  Since joining Seabury, Ms. Quattlebaum has served as the Administrator of Friendship Terrace Retirement Community, the Program Director of Ward 5 Lead Agency Services, was promoted to the position of Chief Program Officer in 2014, and in October of 2019 she was named Chief Operating Officer.  

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Kate Lewis

Chief Operating/Chief Advancement Officer

Kate Lewis has been with Seabury since 1995.  At Seabury Ms. Lewis has coordinated community and congregational outreach and directed marketing and communications efforts for the organization.  Ms. Lewis was promoted to Chief Advancement Officer in 2014. Before Seabury, Ms. Lewis worked at a variety of non profit organizations in  fundraising and program development. 

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Board of Governors

The Rt. Rev. Mariann Edgar Budde, Ex Officio CHAIR

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Susan Spurlark, Esq., PRESIDENT

Susan last served as Vice President and Regional Counsel to Kaiser Permanente’s Mid-Atlantic States’ Health Plan, which in conjunction with the Mid-Atlantic Permanente Medical Group, operates an integrated delivery system providing care and coverage for over 750,000 members. She represented health plans and care delivery organizations for 40 years. Her work included labor and employment regulatory and litigation issues, health plan regulatory issues and audits, major business transactions and transitions, and legal support for development of new lines of business. Susan received her Juris Doctorate from Stanford University Law School and a Bachelor of Arts from Carleton College. She also completed Kaiser Permanente’s Executive Leadership program at the University of North Carolina at Chapel Hill. She currently serves as the President of Seabury Resources for Aging's Board of Governors.


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Craig McCullough​, TREASURER

Craig is the founder and principal of The Catalyst Group. Prior to becoming a Realtor, he worked in public accounting – specializing in real estate and construction finance. Craig grew up in New Hampshire and earned a degree in Accounting from Roanoke College in Salem, VA. In 2010, he moved to the DMV and transitioned careers to Real Estate in 2013. In his spare time, Craig has developed a hobby of home winemaking and is a competitive bodybuilder, having completed his first competition in 2018.

Nikhil Kumtha, SECRETARY

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Rasheen Carbin, PAST PRESIDENT

Rasheen is the Director of Business Development for Sales Lead Store, a lead generation and digital marketing agency. Prior to this, he served as Director of Audience Analytics for CCN.com, a division of Hawkfish AS, a finance-focused media company. He co-founded nspHire, a job search app in 2012 and served in the role of Chief Marketing Officer until its sale in 2017. Prior to becoming an entrepreneur, he worked in marketing/sales roles in media and financial services. His expertise covers advertising, product development, and digital marketing. Rasheen currently serves as Board Secretary of Samaritan Ministry of Greater Washington, Executive Vice President for Membership and Communications of the Georgetown Alumni Club of Metropolitan DC, and is a member of the vestry of The Church of the Epiphany. Rasheen is an alumnus of Georgetown University with a Bachelor of Science in Foreign Service Culture & Politics. He resides in Washington, D.C.

Valerie Cook

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Chris Gardner

Born and raised in Northern Virginia, Chris attended The University of the South in Sewanee, TN for undergrad and The George Washington University for his Master’s in Healthcare Administration. Chris has held leadership roles in a variety of senior living organizations for the past 20 years and serves as Executive Director of Hermitage in Northern Virginia. Hermitage is a faith-based (Methodist) not-for-profit continuing care retirement community in Alexandria, VA. Chris' wife, Elizabeth, is Bishop-elect of the Diocese of Nevada. They have two daughters Carolyn and Annie, and two Labradoodles, Maggie and Dottie.

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Joseph Howell    

Joe's career was primarily dedicated to providing technical assistance to developers of affordable housing and senior housing through his firm, Howell Associates. He has authored four books including "Hard Living on Clay Street", in continuous print since 1973, and "Civil Rights Journey". Joe was a lecturer on affordable housing finance at the School of Public Policy at the University of Maryland from 1995-2010 and an adjunct member of the Honors College faculty at The George Washington University where he taught a course on affordable housing and urban development issues from 2000-2008. Now retired, Joe continues to utilize his expertise in affordable housing to help Seabury meet the needs of older adults in the Washington, D.C. region. Joe received his bachelor’s degree from Davidson College and has master’s degrees from Union Theological Seminary in New York City and The School of City and Regional Planning at the University of North Carolina at Chapel Hill.

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Lecia Imbery  

Lecia has more than 20 years of experience in advocacy, civic engagement, volunteer management, fundraising and program management in the nonprofit field. She serves as Deputy Director of the Coalition on Human Needs (CHN), an alliance of organizations working together to advance federal policies that address the needs of people with low incomes. Prior to joining CHN, Lecia managed federal advocacy for the American Diabetes Association and the American Association of University Women. Before coming to D.C. in 2006, Lecia worked for nonprofits and engineering firms in San Francisco and Chicago. Originally from the Chicago suburbs, Lecia has degrees in civil engineering from the University of Illinois. 

Robin L. Lumsdaine

Robin is a professor of international finance at American University's Kogod School of Business.   In addition to being a professor, she has also held positions as Associate Director at the Board of Governors of the Federal Reserve System, Director in the Global Markets Research Division of Deutsche Bank and Senior Economist for Labor, Aging, and Health Care at the President's Council of Economic Advisers.  Additional federal government experience includes secondments with the National Institute on Aging and the Department of the Treasury.  She has published numerous articles in finance and the economics of aging, particularly factors affecting retirement and health and is a fellow of the Network for Studies on Pensions, Aging and Retirement (Netspar).  Robin received her bachelor's degree from Brown University and holds masters and PhD degrees from Harvard University.

Kimberly Mikec

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Monte Monash  

Monte is the founder and CEO of Monash Advisory Group, LLC. Since 2008, Monash Advisory Group’s reputation has grown in the region as a leading firm providing business development and public relations consulting services. With more than 30 years of project design, development and management experience, she has helped clients successfully capture over $2.6B of infrastructure work in the region. Monte is a proud native Washingtonian and enjoys sharing her time as a mentor, community volunteer and public servant. She is a current Chair of the Board Trustees of the DC Public Library, member of the Public Service Commission Advisory Council, Advisory Council member of The River School, Advisory Council member of Skyland Workforce Center, and a founding member of Women in Infrastructure. Monte earned her bachelor’s degree from Mount Vernon College and continued with graduate studies at Johns Hopkins University. She resides in Washington, DC with her husband, their two school-age sons and fur baby, Jackson.

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Nick Nicholson

Nick is a managing director with Berkadia where, since 2005, he has arranged financing for affordable housing, apartments, healthcare and commercial real estate projects.  Born and raised in Denver, Colorado Nick has lived in the Washington, DC are since 1999 but still gets lost driving around Northern Virginia.  Nick received his undergraduate degree from Middlebury College in 1993 and his MBA from Georgetown in 2001.  Nick lives with his wife and four daughters in McLean, VA.


Thomas J. "T.J." Senker

As president of MedStar Montgomery Medical Center, T.J. is responsible for the overall strategic and operational direction of the hospital and the MedStar Montgomery Board of Directors, with a primary focus on advancing health and caring for people as a trusted leader. He also serves as Senior Vice President for MedStar Health, a $6 billion not-for-profit health system in the Baltimore-Washington, D.C. region. With a healthcare career exceeding 20 years, T.J. is an experienced leader and change agent who has leveraged Lean methodologies to achieve higher levels of quality and safety at lower costs. Prior to becoming president, T.J. served as Vice President of Regional Integration and Operations for MedStar, leading service optimization, performance improvement and integration activities across the Baltimore region. An adjunct assistant professor in the Department of Health Services Administration at Georgetown University, T.J. is board-certified in healthcare management by the American College of Healthcare Executives, and currently serves as a Director for the Montgomery County Chamber of Commerce and the Olney Theatre Center Boards. He graduated with a Bachelor’s of Science in Business Administration from Georgetown University and a Master’s degree in Health Administration from the University of Southern California.

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Sohaer Rizvi Syed  

Sohaer is a lawyer turned politician, wife, and mother to three young children. She works as a legal advisor to a medical group. Sohaer is very passionate about D.C and local politics and has run for local elected office. She believes our community is only as strong as the most vulnerable members that make up our community. A strong proponent for D.C. Statehood, Sohaer believes everyone should have a voice and a vote in Congress.

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Suzanne K. Welch

Suzanne has had a long career in affordable housing and commercial real estate development in Maryland. She retired in November, 2020 as Vice President for Real Estate Development at Enterprise Community Development, Inc. (ECD), the leading Mid-Atlantic nonprofit developer, owner, and operator of a $1 billion portfolio of 110+ apartment communities and 16,000+ homes. Suzanneh has specialized expertise with land-use redevelopment, landlord tenant law, low income housing tax credits, tax-exempt bond financing, local gap financing tools, project based and tenant protection vouchers, and permanent supportive housing policies nationally and locally.