Our Team

David Gage, Ph.D.
Disciplines: Mediator and Clinical Psychologist
David Gage, Ph.D., Principal, is a leader in the field of business mediation and the founder of BMC Associates. Dr. Gage has over 25 years of experience as a mediator and 30 years of experience as a clinical psychologist. He has assisted partners from many different industries in resolving all types of disputes. Dr. Gage is an adjunct professor in American University's business school. His book on effective partnerships, The Partnership Charter: How To Start Out Right With Your New Business Partnership (Or Fix The One You're In), was published in July of 2004.

Donna Hart Gage, Ph.D., R.N.
Disciplines: Mediator and Consultant
After taking a two-year leave from BMC to serve as the Chief Nursing Officer at the VA’s headquarters in Washington DC from 2014-2016, Donna is working again with BMC Associates. At the Veterans Health Administration, Donna oversaw more than 90,000 nursing service personnel in the country’s largest integrated health care system with over 1,700 facilities. A nursing executive with more than 25 years of experience, she is a transformational leader who has collaborated with all disciplines to create supportive professional practice environments. Besides mediating with BMC’s clients around the country, in Canada, and by video conference with partners around the world, Donna’s consults to nursing executives on issues related to hospital and nursing leadership, union relations, operations and strategy.

Mark Sirkin, Ph.D.
Disciplines: Mediator, Organizational Consultant and Clinical Psychologist
Mark Sirkin is a management consultant specializing in executive development, mediation, coaching, and organizational change. He is well known in the consulting field for his expertise with family-owned enterprises and closely-held businesses and partnerships, including law firms. He is a senior board-level advisor to several companies. He has completed post-doctoral work in organizational consulting and is also a Certified Exit Planning Advisor (CEPA).

Virginia McArthur, J.D.
Disciplines: Attorney and Mediator
Ginny McArthur is a estate planning lawyer who in 1992 founded the estate planning boutique law firm now known as McArthur Franklin PLLC. The firm represents high net worth individuals, as well as those with more modest estates, in estate and gift tax planning, trust and estate administration, charitable planning, and probate. Ginny has written and spoken to lawyers and lay people on estate planning and administration topics. For over 20 years she co-authored Wills, Trusts and Estates for the D.C. Area Practitioner, an annually updated treatise on estate planning practice in D.C., Maryland, and Virginia. She teaches and has taught on estate planning topics and on ethical issues in estate planning.

Marc Sokol, Ph.D.
Disciplines: Executive Coaching, Team Facilitation, Mediation
Organizational psychologist, consultant, executive coach, writer, and speaker on workplace dynamics for the past 30 years, Marc Sokol has worked with leaders and companies in 25 countries, across North America, Europe, Asia, Australia, and Africa.  Marc has worked in large and small companies, in public and private sector, and has been adjunct faculty in both a psychology and management departments at leading universities.

Eileen Barker, J.D.
Discipline: Mediator
Eileen, founder of Barker Mediation in the San Francisco Bay Area, is a full-time mediator whose practice draws on over 25 years of experience in law and dispute resolution and hundreds of hours of specialized training. Since 1991, Eileen has successfully mediated hundreds of cases in a wide range of areas including commercial, partnerships, employment, real estate, personal injury, insurance, probate, and family/divorce. She has also served as an arbitrator, discovery referee, and neutral evaluator in numerous matters. Eileen has served on mediation panels and provided services for courts, private organizations, and government agencies.

Susan Coleman, J.D., M.P.A.
Attorney, Mediator, ICF Certified Coach
Susan Coleman is a partner at C Global Consulting LLC in New York City and a global consultant with close to three decades of experience building collaboration in organizations and systems. Her practice combines the ability to create and deliver world-acclaimed workshops and seminars, with skill in designing large or small system interventions to promote collaboration, improve organizational performance and resolve conflict.

Melinda Ostermeyer, M.S.
Disciplines: Organizational Consultant and Mediator
Melinda is an organization development consultant, trainer in conflict resolution and collaborative problem solving, and facilitator. She was formerly adjunct professor for several universities and director of the Dispute Resolution Division of the D.C. Superior Court and the Dispute Resolution Centers. Melinda has 20 years of experience specializing in management, mediation, and designing systems to resolve conflict within organizations.

Michael Stadter, Ph.D.
Disciplines: Organizational Consultant and Clinical Psychologist
Michael is a clinical psychologist, organization development consultant, and the former director of several mental health facilities. He has 24 years of experience specializing in executive coaching, conflict resolution, stress management, and enhancing work group effectiveness.

Richard K. Yocum, M.S.
Disciplines: Management / Organizational Consultant
Richard Yocum is a mediator and a management and organization development consultant who specializes in working with partners and family-owned, closely-held businesses. He serves as coach to business owners, CEOs, and key executives of companies of varying size and industry type. His background includes sixteen years in management roles (line and staff) with world-class organizations. As a strategic

Steve Shapiro
Disciplines: Mediator and Attorney
Mr. Shapiro has over thirty years of experience mediating commercial, governmental,  and family disputes.  He designs  and manages comprehensive dispute resolution systems; facilitates  decision-making planning sessions; coaches managers; trains professionals in negotiation, mediation, and collaborative decision-making techniques; and initiates change-efforts in organizations.

Kevin Raum, M.S.
Disciplines: Business Consultant and Coach
Kevin Raum has more than 30 years of experience as a consultant, manager, and entrepreneur. He has a particular expertise in working with women business owners and partnerships. Through his experience as a leader, manager, and business advisor, he brings a depth of knowledge and understanding of the challenges, opportunities, and issues that business owners and executives face in developing and managing their businesses and creating the results they want.