Atty. Dennis Michael Sullivan

Atty. Dennis Michael Sullivan

Dennis Michael Sullivan is a lawyer practicing estate planning, business law, tax law and 17 other areas of law. Dennis received a B.S.C. degree from University of Santa Clara in 1966, and has been licensed for 56 years.

San Francisco San Francisco 56 yrs experience 56 year
Call (628) 303-0193 Book Appointment

Profile Summary

About Dennis Michael Sullivan at a glance

Dennis Michael Sullivan is a Member based in San Francisco, California, practicing at Law Offices of Dennis M. Sullivan. They have 56+ years of legal experience, licensed to practice since 1970. Their practice focuses on wills, trusts, probate, estate planning, and business. Admitted to practice in California (1970), U.S. Supreme Court (1978), and U.S. Tax Court (1996). Educated at University of California, Hastings College of Law (J.D., 1969) and University of Santa Clara (B.S.C. Accounting, 1966). Recognitions include AV Preeminent. Active member of State Bar of California. Serands clients in San Francisco, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Dennis Michael Sullivan is a lawyer practicing estate planning, business law, tax law and 17 other areas of law
  • Dennis received a B.S.C. degree from University of Santa Clara in 1966, and has been licensed for 56 years
  • Dennis practices at Law Offices of Dennis M. Sullivan in San Francisco, CA

Practice Areas Explained

Dennis Michael Sullivan's Areas of Practice

Each practice area below reflects the types of cases Dennis Michael Sullivan handles, with a brief overview of what that area of law covers.

Wills

Dennis Michael Sullivan is one of 34,541 wills attorneys indexed nationally. Browse wills attorneys in California →

Trusts

Dennis Michael Sullivan is one of 104,171 trusts attorneys indexed nationally. Browse trusts attorneys in California →

Probate

Dennis Michael Sullivan is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in California →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Dennis Michael Sullivan is one of 226,536 estate planning attorneys indexed nationally. Browse estate planning attorneys in California →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Dennis Michael Sullivan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in San Francisco are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in San Francisco or all attorneys in California.

Frequently Asked

Common questions about Dennis Michael Sullivan

Where is Dennis Michael Sullivan's law office located?
Dennis Michael Sullivan's law practice is located in San Francisco, California. The firm is Law Offices of Dennis M. Sullivan. You can contact the office directly through this profile page.
What practice areas does Dennis Michael Sullivan handle?
Dennis Michael Sullivan focuses on wills, trusts, probate, estate planning, business. Each practice area listed reflects experience handling cases of that type in California.
How long has Dennis Michael Sullivan practiced law?
Dennis Michael Sullivan has 56+ years of legal experience and has been licensed since 1970.
Where did Dennis Michael Sullivan go to law school?
Dennis Michael Sullivan earned their education at (J.D., 1969); (B.S.C. Accounting, 1966).
How can I contact Dennis Michael Sullivan for a consultation?
You can contact Dennis Michael Sullivan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Dennis Michael Sullivan received?
Dennis Michael Sullivan's notable recognition includes: AV Preeminent.

Education

J.D.
University of California, Hastings College of Law
- 1969
B.S.C. Accounting
University of Santa Clara
- 1966

Awards

AV Preeminent

Bar Admissions

California
Admitted: 1970
U.S. Supreme Court
Admitted: 1978
U.S. Tax Court
Admitted: 1996

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