About Us

More than the sum of our parts.

Ratzlaff Tamberi & Wong is a community-centered public accounting and management consulting firm located in Fresno, California. We provide a wide-range of auditing, accounting, tax and consulting services to clients in the greater San Joaquin Valley and beyond. We hold a distinguished reputation for ethical practices and professionalism.

We are a team of principals trained by Big Four international accounting firms with a commitment to client needs and professional growth.

Meet our principals:

Curtis R. Wong, Managing Partner
George A. Tamberi, Partner
Christopher A. Ratzlaff, Partner
Harpreet S. Gill, Partner

We strive for a trusting and close-working client relationship with frequent communication. Our policy is to provide free telephone support for short-length calls. An important part of our service philosophy is the ongoing involvement of at least one partner or manager in each engagement, which we feel promotes close business relationships and effective communication.

Our clients range from small proprietorships to large corporations in an ever-widening spectrum of industries:

Agribusiness Healthcare
Bankruptcy and Insolvency Accounting Manufacturing
Construction Printing and Publishing
Financial Services Professional Services
Food Service Real Estate
Foundations Wholesale and Retail Trade
Government and Non-Profit Organizations  

Our roots date back to the merger of two distinguished local entities. Chaltraw & Wong was formed in 1985 by two former principals, William E. Chaltraw and Curtis Wong from the Fresno office of a Big Four accounting firm. In 1986, Janzen & Tamberi began with the inclusion of George Tamberi as a partner to the long-standing practice of Alfred Janzen. In 1990, Chaltraw, Janzen, Tamberi & Wong was formed by the merger of these two firms and then became Janzen, Tamberi & Wong in 1992. In 2011, Christopher Ratzlaff became a partner and in 2018 the firm’s name was changed to Ratzlaff Tamberi & Wong. In 2022, Harpreet Gill became a partner.

Throughout our principals’ professional careers, and over the course of our evolution, Ratzlaff Tamberi & Wong has maintained a commitment to unparalleled client service. But the spirit and purpose behind that cannot be measured by mere professional standards alone. We encourage personnel to be involved in community, educational and other activities that promote personal excellence. The firm’s partners are committed to serving California and the Central Valley by remaining active in civic affairs and the local business community. We have served in local professional organizations and have a broad range of experience in tax, accounting, auditing and management consulting. In short, Ratzlaff Tamberi & Wong is more than the sum of its parts.

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