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Leadership Team

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Dawn Quattlebaum

Chief Executive Officer

Dawn Quattlebaum has more than 30 years of 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. 

Board of Governors

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

Mariann Edgar Budde serves as spiritual leader for 88 Episcopal congregations and 10 Episcopal schools in the District of Columbia and four Maryland counties. The first woman elected to this position, she also serves as the chair and president of the Protestant Episcopal Cathedral Foundation, which oversees the ministries of the Washington National Cathedral and Cathedral schools. Bishop Budde was consecrated as the ninth bishop of Washington in November 2011, and served as Interim Dean of Washington National Cathedral from 2016-2017. Prior to her election, she served for 18 years as rector of St. John’s Episcopal Church in Minneapolis. Bishop Budde earned a B.A. in history at the University of Rochester, graduating magna cum laude. She earned both a Masters in Divinity (1989) and Doctor of Ministry (2008) from Virginia Theological Seminary. When not working, you’ll often find her riding her bicycle, cooking dinner for friends or visiting family. Bishop Budde and her husband, Paul, have two adult sons, Amos and Patrick.

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Susan Spurlark

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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Marti is the Director of the Sibley Senior Association and Community Health at Sibley Memorial Hospital. She is an experienced speaker and facilitator who specializes in Alzheimer's and other forms of dementia, community health, and caregiver support. Marti is dedicated to helping populations in underinvested areas overcome barriers to health. Marti has developed multiple programs for older adults and care partners, including Club Memory®, Final Affairs Project, and Laugh Cafe. She is a Certified Senior Advisor, a Certified Dementia Practitioner, and a Certified Alzheimer’s and Dementia Care Trainer. Marti has a Bachelor of Science in Business Administration from Regis University.

Craig McCullough
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Craig McCullough​, TREASURER

Craig is the Strategic Business Development Manager for Miles & Stockbridge, PC., where he is responsible for the marketing and business development strategy for the firm’s commercial division. Previously, he has was the Founder and Managing Partner of The Catalyst Group at Compass, and worked in public accounting – specializing in non-profit and real estate finance. Craig has served on five non-profit Board of Directors and enjoys supporting the Seabury mission every day. His extensive skills in finance have allowed him to support and develop sound financial systems and policies for the organizations he serves. He grew up in New Hampshire and earned a degree in Accounting from Roanoke College in Salem, VA. 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

Nikhil is a Director at CliftonLarsonAllen which offers advisory services, wealth management, and audit and tax counseling. Nikhil holds a Master of Business Administration from Duke University. His experience includes management of global supply chain, business development and strategic analysis for business clients.

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Rasheen Carbin

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, 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.

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Valerie Cook

Valerie has over 25 years of experience as a business transformation and strategic change professional, designing, developing, and managing complex programs and IT initiatives impacting people, business processes, and operations for the Public Sector, Defense, Intelligence, Healthcare, Energy, and Fintech.

Valerie splits her time between Washington, DC, and North Carolina, where she helps her aging parents.  She has a certificate in Gerontology and is a graduate of Bennett College and the Carey School of Business at Johns Hopkins University.

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Chris Gardner

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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Joe Howell

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.

Lecia Imbery
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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.

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Kimberly Mikec

Kimberly is the Chief Marketing Officer for iFinca, an Agri-fintech company employing a first-to-market B2B2C blockchain native mobile app to ensure coffee is ethical and sustainable from farm to café. She has worked in marketing, communications, and public relations roles in global services, government, and technology. She is a mentor for the American Marketing Association DC and for 76 Forward. Kimberly earned her B.A. in Mass Communications from the University of Colorado and her MBA from Georgetown’s McDonough School of Business.

Monte Monash
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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.

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T.J. Senker

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
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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.

Suzanne K. Welch
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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. Suzanne 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.

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