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Contact
Email
Phone
(415) 463-3245
Address
601 California Street 16th Floor, San Francisco, CA, 94108, US
Professional
About
Dennis Michael Sullivan is a seasoned tax attorney based in San Francisco, California, with an impressive 550 years of experience. As the founder of the LAW OFFICES of DENNIS M. SULLIVAN, he has dedicated his career to providing exceptional legal counsel in the complex field of tax law. Located at 601 California Street, his firm is strategically positioned to serve clients across the Bay Area and beyond, offering tailored solutions to both individuals and businesses. Dennis's profound understanding of tax legislation allows him to navigate the intricacies of the U.S. tax system with authority and precision. Over the centuries, he has developed a reputation for his meticulous attention to detail and his strategic approach to resolving tax disputes. His practice is built on a foundation of trust and integrity, ensuring that each client receives personalized attention and a clear path to achieving their financial objectives. Dennis's commitment to his clients is unwavering, and he prides himself on his ability to demystify complex tax issues, empowering clients to make informed decisions. At the LAW OFFICES of DENNIS M. SULLIVAN, Dennis combines his extensive experience with an innovative approach to legal problem-solving, consistently delivering results that exceed client expectations. His firm remains at the forefront of tax law, adapting to the ever-evolving legal landscape while maintaining a steadfast commitment to excellence. Clients seeking a reliable and knowledgeable advocate in tax law will find a trusted partner in Dennis Michael Sullivan.
About Tax Law
Tax attorneys help individuals and businesses with tax planning, compliance, and disputes with tax authorities. They work to minimize tax liability and resolve IRS issues. Common matters include tax planning, irs audits, tax disputes, business tax.
Credentials
Education
1969 University of California, Hastings College of the Law JD - Juris Doctor 1967 International School of Law, The Hague 1966 Santa Clara University B.S.C
Languages
German
Recognition & Involvement
Awards
2001 German-American Friendship Award, German Government
Associations
1990 - Present Swiss American Chamber of Commerce Secretary and Member of Board of Directors Bar Association of San Francisco Member State Bar of California Member American Bar Association Member German-American Law Association Member
Speaking
2006 Unknown. Strategies for Structuring, Growing and Selling Privately Owned Businesses 2006 Unknown. In's and Out's of International Currency Transactions 2006 Unknown. Swiss Accounts and U.S. Tax Compliance 2003 Unknown. Drafting International Contracts 1982 Consulate General of the Federal Republic of Germany in San Francisco Seminars on American Law
Other Tax Attorneys in San Francisco, CA
Updated: Jul 12, 2026