Broker Check

About Us

Who We Are

Accountant and Advisors to Silicon Valley since 1979.

Our History

Back in 1979, Silicon Valley as we know it was barely recognizable. Darrell Johanson and Anthony Yau were colleagues and partners at a large international accounting firm when they began to articulate an idea. This idea, their vision, was all about providing a more personalized approach to client service. It would begin with strong relationships and expert abilities to produce effective, meaningful results on behalf of their clients. Today, we continue to advance this commitment to detail and personal relationships as we provide service to individuals, families and privately-owned businesses throughout Silicon Valley and beyond

Our Values

Ethics and Integrity / Exceptional Client Services / Professional Growth / Community Stewardship

Our Team

You deserve the best. At Johanson & Yau, we listen carefully, explore options and solve problems. When you are willing to share our mission with friends and family, that’s the ultimate compliment.

Our ongoing participation in professional, industry and community organizations also expands our networks and knowledge base – delivering deeper insights and a more proactive approach to client service. As a member firm of BKR International, a global accounting association of 160 independent firms in 80 countries, we regularly collaborate with other member firms and pursue additional technical training opportunities.

To see what it's like to work with us, click here.

Dave Davis, CPA

Managing Partner

(408) 288-5111

(408) 288-7174

“I’m passionate about building relationships.” I joined Johanson & Yau in 1980 and became a partner in 1986. I direct the firm’s business strategy and operations including client service, practice/business...

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Byron Ishiwata, CPA

Tax Partner & Financial Advisor

(408) 288-5111

(408) 288-7174

“Personal service sets us apart.” I joined Johanson & Yau in 1983 and became a partner in 2002. I specialize in serving individuals, corporations, partnerships and estates and trusts. I take great pride in personal service...

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Laura Lin, CPA

Assurance Partner

(408) 288-5111

(408) 288-7174

“Everything starts and ends with trust.” I have been with Johanson & Yau since 2003, focusing on our accounting and audit practice. My specialization is in financial statements, primarily audits and reviews for closely...

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Elier Peraza, CFP®

Director of Financial Services

(408) 288-5111

(408) 288-7174

elierp@jyac.com

“I’m all about building close relationships and collaborating with my clients to find the best strategies and solutions.” I joined Johanson & Yau in 2016 with more than a decade of experience as a financial advisor,...

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Sam Cannon, CFP®

Financial Advisor

(408) 288-5111

(408) 288-7174

samuelc@jyac.com

“Our team approach to financial planning places our client at the center of the relationship” I joined Johanson and Yau as a Financial Advisor in 2019. I love collaborating with people and getting to know their...

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