About
Mary Vandenack, CAP®, COLPM®, ACTEC, Accredited Estate Planner®, is the Managing Member of the Omaha office. She is a nationally recognized attorney who focuses on estate planning, asset protection, tax strategies, business services, and succession planning. Mary works with entrepreneurs, closely held businesses, wealthy families, and family offices. She helps her clients build strong legal plans to protect assets, minimize taxes, and pass wealth to future generations. Her work is guided by each client’s unique goals and challenges.
Mary E. Vandenack earned her J.D., magna cum laude, from Creighton University School of Law, where she was Editor-in-Chief of the Creighton Law Review and Best Oral Advocate in Moot Court. She holds a B.A. in Business and Accounting, summa cum laude, from the College of St. Mary. She also earned a Certificate in Positive Psychology from the University of Pennsylvania and Master Track Certification in Social Work from the University of Michigan.
With years of experience, Mary helps business owners craft strategic exit plans, navigate complex tax issues, and protect their personal and business legacies. She also advises professionals in healthcare, mental health, and other licensed fields on regulatory and compliance matters. A recognized thought leader in estate planning and business law, Mary has earned top honors from Best Lawyers®, Martindale-Hubbell, and the American Bar Association, and has been inducted into the NAEPC Estate Planning Hall of Fame and the College of Law Practice Management.
Mary Vandenack shares her knowledge through speaking engagements and published articles on estate planning, business law, and legal technology. She also leads the “Legal Visionaries” podcast and serves on multiple boards and legal committees. Her commitment to legal innovation and excellence has made her a trusted advisor across the legal and financial industries.
Law Office Affiliations
- Managing Member, Duggan Bertsch
- Member, American Bar Association
- Member, Michigan Bar Association
- Member, Omaha Bar Association
- Member, Association of Professional Responsibility Lawyers
- Member, Nationwide Gift Planning Advisory Council (2022 to present)
- Member, Omaha Chamber of Commerce
- Member, Omaha Estate Planning Council
- Member, American Health Lawyers Association
- Member, American College of Trust and Estate Council (2020 to present)
Licensed State
- Nebraska
- Michigan
Education
- Creighton University School of Law
Juris Doctor (JD) - College of St. Mary
Bachelor of Arts (BA)
Awards & Badges











- Probate
- Trusts
- Franchise, Dealership & Partnership
- Tax




