
About Us
Dieffenbach and Associates, s.c., is a community-based CPA firm with over 20 years of experience. Our focus has always been on the services most important for the success of our customers.
Guided by Dick Dieffenbach, CPA, our capable staff includes long-time employees Barb, Dayle, and Mary.
Dick Dieffenbach, CPA, MBA has been a community leader since transferring to Wisconsin with Peat Marwick, one of the most respected international CPA practices.
As a partner in the firm, he concentrated on serving not-for-profit, governmental, and small business clients. He formed Dieffenbach & Associates in 1989.
Dieffenbach & Associates is a well regarded source for many not-for-profit organizations and small businesses in Ozaukee, Milwaukee, Washington and Waukesha counties.
Professional Association Memberships and Achievements:
- The American Institute of Certified Public Accountants (since 1971)
- The Wisconsin Institute of Certified Public Accountants (25 year certificate holder and recipient of Southeast Chapter Community Service Award)
Community Involvement:
- 2008 Ozaukee County Volunteer of the Year
- Cedarburg Volunteer Fire Department (passive member)
- Cedarburg Common Council (two terms):
- Finance Committee
- Library Board
- Board of Review
- Light and Water Commission
- Revolving Loan Committee - Bicentennial Celebration Leadership
- Forward Cedarburg (Charter member)
- M-T Sunrise Rotary (Charter member)
- Greater Cedarburg Community Foundation
- Concordia University Community Relations Committee
- Public Policy Forum, Trustee Emeritus
- Neighborhood House, Milwaukee, Active and Honorary Board Member
Dick and Dayle, his dynamic wife of over 40 years, have three adult children:
- Kristen, PhD - Lecturer, author and professor at West Virginia
University and elite athlete and coach, Morgantown, WV - David - Marketing team leader for integrated veterinarian supply
company, Portland, ME - Ken – Senior Special Agent, Office of the Inspector General, US Department of Justice, Washington, DC







