Withum is ranked as one of the top Bay Area CPA firms with expertise in 18 industries, one of the largest ERISA practices, enhanced forensic capabilities, and the ability to offer outsourced accounting and cyber services. You won’t find a more connected group of passionate professionals who offer advisory, tax and assurance services to the San Ramon business community.

If you need a tax advisor, business consultant or accountant in San Ramon, CA, contact us to see how Withum might be a great fit to help you achieve your business goals.

Find Our San Ramon Office

San Ramon Industry Specializations

Multiemployer Plans

Labor Unions

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Not-For-Profit

Withum in the San Ramon Community and Beyond

Outside of the office, our San Ramon team members are active within the community, from holding board positions and running road races to annually contributing to various not-for-profit organizations throughout San Ramon. We are committed to being a part of the growth and development of our home.

While our office and people are local to the Bay Area business community, Withum’s footprint extends beyond the region.

Partner In Charge

Joe Thiermann headshot with a white background

Joe is a partner with over 25 years of specialized audit experience with audits of defined contribution plans, defined benefit plans, health and welfare plans, labor organizations and not-for-profits. He conducts system-wide reviews, designs and implements accounting systems and works on special projects involving system design, expense reporting and compliance, often in conjunction with other professionals to resolve regulatory and general management issues for clients.

Leadership

Barry T. Omahen

Partner

San Ramon, CA

Jessica R. Roster

Partner

San Ramon, CA

Nick Browning

Partner

Portland, OR

Jasmine S. Baker

Partner

San Ramon, CA

Kyle S. Whittemore

Partner

San Ramon, CA

Michelle L. McCann

Partner

San Ramon, CA

Sunyoung “Sunny” Baek

Partner

San Ramon, CA

Donnie Springer

Partner

San Ramon, CA

Richard Thiermann

Partner

Orange County, CA

Contact the San Ramon Office