OCS has built a reputation for providing creative, timely solutions while consistently exceeding client expectations. This dedication to superior customer service has allowed us to grow our business solely on client referrals. Hear directly from some of our references in our client testimonials on how our collaborative teamwork approach generates industry-leading results while improving the quality of their team.
While the organizations we serve reach a broad base of constituents, all share a mission of service to others. The OCS team is proud to have partnered with the following clients:






AARP
Achieving the Dream
American Association of State Colleges and Universities
American Association of State Highway Transportation Officials
American Bar Endowment
American Bar Foundation
American Chemical Society
American Counseling Association
American Society for Microbiology
American Society of Civil Engineers
Arundel Community Development Services
Association of American Medical Colleges
Association of Universities for Research in Astronomy (AURA)
Automotive Coalition for Traffic Safety
Bethesda Chevy Chase Baseball, Inc.
BSCS Science Learning
California Academy of Sciences
Carthage College
Catholic Charities USA
Center for Reproductive Rights
Climate United
Economic Club of Washington
Electronic Payments Coalition
Electronic Transactions Association
Endocrine Society
Gallaudet University
George Mason University Foundation
Greenpeace
Heart Rhythm Society
Hope for the Warriors®
Infectious Diseases Society of America
International Sign Association
International Youth Foundation
Knox College
Lawyers Without Borders
Legal Services Corp
LSST-Discovery Alliance
NAACP
National Academy of Sciences
National Asphalt Pavement Association
National Association of Home Builders
National Council on Aging, Inc
National District Attorneys Association
National Indian Education Association
National Marine Sanctuary Foundation
National Park Foundation
National Public Radio
National Recreation and Park Association
National Trust for Historic Preservation
Nichols College
North Central College
Old Dominion University Foundation
Pediatric Nursing Certification Board
PhRMA
PhRMA Foundation
Population Institute
Princeton Theological Seminary
Society for Maternal Fetal Medicine
The Catholic University of America
University of Virginia Darden Foundation
US Travel Association
Vital Voices
Westminster University
WETA
Wolf Trap Foundation for the Performing Arts
Women for Women International
World Federation of Hemophilia USA