Chair of the Board of Directors

Peter Mainstain, CPA

Peter Mainstain is Chair of the Board of Directors of the Pacific Region of the Arthritis Foundation. During his fifteen years of volunteer service, he has served on Executive, Board Development, Resource Development, Operations and Gala Leadership committees, and was elected to the Board of Directors in 2001. 

As co-founder of Los Angeles-based Tanner Mainstain Glynn & Johnson, LLP, Peter has extensive experience in all phases of the entertainment and sports industries, including personal and business management, and financial and retirement planning. 

Peter holds a Bachelor of Science in Business Administration and Accounting from California State University, Northridge, and completed post-graduate studies in business and taxation at the University of Southern California and Golden Gate University.

He has taught business and accounting courses at the University of California, Los Angeles, and has lectured for industry and professional organizations. In addition, he serves on the boards of several charities and professional organizations. 

We applaud Peter’s leadership and his commitment to make a difference in the lives of the 50 million adults and 300,000 children with arthritis.