Mark moved his family to Idaho in 1987 and has worked in private practice ever since. While his practice has always included wills, trusts and probate work, it was in 2001 that Mark focused his practice entirely on estate planning. Mark has co-authored several manuals for attorneys and has regularly taught attorneys and other professionals on the subjects of estate and legacy planning as well as asset protection and tax planning. Mark is also a frequent lecturer to financial professionals and insurance agents on the same topics.

Mark has also been involved with volunteer work for the Court Appointed Special Advocate (“CASA”) program, representing the guardians ad litem who are appointed by the Court to represent abused or neglected children. Mark received the CASA Attorney of the Year Award in 2006. He also earned the Denise O’Donnell-Day, Pro Bono Award in 2003, for fifteen years of service in the CASA program. He has also served as a member of the Alzheimer's Idaho Board of Directors since 2010.

Mark is active with the Boys Scouts of America. He and his wife JoAnn reside in Meridian and have six children and four grandchildren.