Calladine (retired), Guy D.

Guy D. Calladine
Of Counsel
Phone: 415-391-8140
Fax: 415-391-3898
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Guy D. Calladine was a founding partner of Carlson, Calladine & Peterson LLP and an uncompromising trial attorney with over 38 years of experience. Mr. Calladine specialized in both defense and prosecution of legal malpractice and fiduciary breach claims arising from virtually every facet of the practice of law, including intellectual property, estate and trusts, real property, family law, personal injury and commercial transactions, attorney client fee actions, partnership disputes and disqualification proceedings. Mr. Calladine’s practice also included complex commercial litigation and catastrophic injury defense.  Mr. Calladine counseled law firms on ethics issues, and was a frequent lecturer and continuing legal education provider, allowing others to benefit from his expertise in handling legal malpractice actions.  Mr. Calladine has recently ended his litigation practice and his work is now limited to consultation and occasional expert witness service.Mr. Calladine was approved as a Certified Specialist in Legal Malpractice Law by the State Bar of California from 2011-2021, and is a member of the State Bar of California and the Bar Association of San Francisco.

Former Areas of Practice

  • Legal Malpractice – Representation of Plaintiffs and Defendants
  • Catastrophic Injury Defense


  • University of California at Berkeley, Boalt Hall School of Law, Berkeley, California
    • J.D. – 1981
  • Pennsylvania State University
    • B.A. summa cum laude – 1973