Paul A. Treinen, CPA

Managing Partner
Tax and Advisory Services Partner

Email Paul A. Treinen

Paul has been in the public accounting field since 1990 when he joined White Nelson Diehl Evans LLP.  He quickly advanced to Partner by 2001. He is a member of WNDE’s Executive Committee and is the Firms’s Managing Partner.  Paul handles a number of administrative items for our Firm.

Paul specializes in corporate and pass-through taxation and also has a very robust individual client base.  He also does ASC740 income tax provision work.  Like most partners in our Firm, Paul has vast experience dealing with manufacturers and distributors.  He also has a number of clients that are focused in hospitality, retail, real estate, and senior care and aged services.  Paul has extensive experience in mergers and acquisitions, transactional issues, business formations, and strategic exit strategy planning. Paul is an ardent believer in the value of tax planning.


  • Retail and Consumer Products
  • Hospitality
  • Real Estate
  • Senior Care and Aged Services
  • Extensive Experience with Mergers, Acquisitions, Transactional Planning, Business Formations, and Exit Strategy Planning.


  • California State University, Fullerton – Bachelor of Arts, with a major in Business Administration and a concentration in Accounting, 1989
  • Certificate of Education Achievement in Business Valuations, AICPA
  • CPA Designation: 1992

Professional Affiliations:

  • Pacific Club, Orange County

Community Involvement:

  • SCUHS Audit Committee Member