Brian P. Wilterink, CPA

Audit and Assurance Partner

Email Brian P. Wilterink

Brian has been with White Nelson Diehl Evans LLP since 1981. He was promoted to Audit and Assurance Partner in 1992. He is the Director of the company’s Audit and Assurance department and is a member of the WNDE Executive Committee.

Brian’s responsibilities include the oversight of Attestation services for large and middle-market companies. He specializes in manufacturing and distribution, employee benefit plans, real estate, construction, and financial services.

Brian is an avid cyclist and enjoys riding motorcycles.


  • Primary Focus:Attestation and Financial Services
  • Major Involvement with Manufacturing and Distribution Companies
  • Extensive Experience Serving the Real Estate and Construction Industries
  • Temporary Staffing, Non Profit, Equipment Leasing


  • California State University, Fullerton – Bachelor of Arts 1981
  • CPA Designation: 1985

Professional Affiliations:


Community Involvement:

  • Oversees WNDE’s community outreach programs.
  • Board Member of the Boys and Girls Club of Tustin