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Shannon & Marquard office with Jeanne at


Shannon & Marquard, APC

Shannon & Marquard, APC is a family-owned tax and accounting firm that delivers hands-on, personalized service in San Diego, California. They specialize in helping small, privately-held businesses, entrepreneurs, and high net worth individuals with their tax preparation, tax planning, and bookkeeping services.
With over 50 years of combined experience, the accountants at Shannon & Marquard have the knowledge and training to handle nearly any tax situation, no matter how complex. They believe in developing relationships with their clients and becoming trusted advisors while working to find solutions and make suggestions to save you money. They will even work with your financial planner and attorney to find the best possible strategy for your finances, business, and future.

Our Team

Headshot of Jeanne Shannon, CPA and Partner at Shannon & Marquard, APC

Jeanne A. Shannon



Phone: (858) 558-5550 ext. 100

Headshot of Jeremiah Marquard, CPA and Partner at Shannon & Marquard, APC

Jeremiah S. Marquard



Phone: (858) 558-5550 ext. 102

Headshot of William King V, CPA at Shannon & Marquard, APC

William H. King



Phone: (858) 558-5550 ext. 103

Headshot of Pamela Ennis, NP, CRTP at Shannon & Marquard, APC

Pamela Ennis



Phone: (858) 558-5550 ext. 104


Ready to connect? Contact us now!

You can reach us by phone, email or via our Contact Form.

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