New York State Bar Association (Former President, Executive Committee, Finance Committee, Former Chair of Nominating Committee, House of Delegates, Chair of Committee on Standards of Attorney Conduct, Former Chair of Special Committee to Review the Code of Professional Responsibility, Former Chair of Special Committee on Multi-Disciplinary Practice, Chair of Committee on Cross-Border Legal Practice, Former Co-Chair of President's Committee on Access to Justice, Chair of International Section, Former Vice-Chair of Special Committee on the Law Governing Firm Structure and Operation ("MacCrate Committee"), Former Vice-Chair of Special Committee on the Future of the Profession, Special Committee on Legal Issues Affecting Same-Sex Couples, Special Committee on Law Practice Continuity,Special Committee on Multi-Disciplinary Practice and The Legal Profession, Membership Committee, Committee on Mass Disaster Response, Committee on Professional Ethics)
New York Bar Foundation (Trustee, Fellow)
American Bar Association (Former Chair of Standing Committee on Ethics and Professional Responsibility, Coordinating Council of Center for Professional Responsibility, Gramm-Leach-Bliley Task Force, House of Delegates, New York Membership Co-Chair, Former Fellow Chair of New York State)
International Bar Association, (Policy Committee, Bar Issues Commission, Vice-Chair of Multidisciplinary Practices Committee, Professional Ethics Committee)
New York City Bar (Former Chair and Secretary of Committee on Professional and Judicial Ethics, Special Committee on Government Ethics, Ad Hoc Committee on Private Legal Referral Services, Committee on Federal Courts, Ad Hoc Committee on Mass Disaster Planning, Former Chair of Delegation to the NYSBA House Of Delegates)
The Federalist Society (Lawyers Division, Senior Advisor of Professional Responsibility Practice Group, Former Chair of Committee on Conflicts of Interest, New York Chapter Steering Committee)
American Law Institute
American Counsel Association