Mark is a mediator and collaborative lawyer in Westport, Connecticut. In addition to his law practice, he has taught law students about mediation and alternative dispute resolution for over thirty years at Quinnipiac University School of Law. He is a member of the American Bar Association, Connecticut Bar Association and New York Bar Association. He is also actively involved in multiple committees of the Connecticut Council for Non Adversarial Divorce (CCND) and the International Academy of Collaborative Professionals (IACP), an organization of interdisciplinary collaborative professionals and peacemakers from around the world which was nominated in late 2022 for the Nobel Peace Prize.