James Gaughan O'Callahan

James Gaughan O'Callahan

James Gaughan O'Callahan

Los Angeles, California

As a partner at Girardi and Keese, James G. O'Callahan handles plaintiff civil litigation. He has tried product liability, bad faith, medical malpractice as well as personal injury cases. Mr. O'Callahan has over thirty jury trials, and has tried cases in both State and Federal Court. Since 1995 Mr. O'Callahan has served as an arbitrator and mediator for the Los Angeles County court's Alternate Dispute Panel. He has lectured at continuing legal education programs on product liability cases, pharmaceutical litigation, evidence, handling medical malpractice cases. He has also been selected to participate in ABOTA's "Masters in Trial" program.  He served as the California Liaison to the DePuy ASR MDL as well as on the Plaintiffs' Steering Committee for the California DePuy ASR JCCP.  He presently serves on the Plaintiffs' Steering Committee for the Actos JCCP and previously served as Plaintiffs' Liaison Counsel in the Vioxx JCCP.


Mr. O'Callahan obtained his undergraduate degree in American Studies graduating with honors. He was a Rotary Foundation Fellow at the University of Sussex.

Areas of Practice

  • 55% Product Liability and Negligence
  • 20% Professional Negligence
  • 15% Personal Injury
  • 10% Intellectual Property/Business

Litigation Percentage

  • 100% of Practice Devoted to Litigation

Bar Admissions

  • California, 1986
  • U.S. District Court Central District of California, 1987
  • U.S. District Court Eastern District of California, 1987
  • U.S. District Court Northern District of California, 1987
  • U.S. District Court Southern District of California, 1987


  • University of California at Los Angeles School of Law, Los Angeles, California
    • J.D. - 1986
  • University of California, Santa Cruz, California
    • B.A. cum laude - 1978
    • Honors: With Honors
    • Honors: With Distinction
    • Honors: College Honors

Professional Associations and Memberships

  • American Board of Trial Advocates, Associate, 1996 - Present
  • CAOC, Member, 1987 - Present
  • Attorney Information Exchange Group
  • Eighth Street Lawyers Public Justice
  • Consumer Attorney of California
  • Association of Business Trial Lawyers
  • American Association of Justice
  • Los Angeles County Bar Association
  • American Bar Association
  • Public Justice Foundation
  • Consumer Attorneys Association of Los Angeles
  • Western Trial Lawyers

Honors and Awards

  • Super Lawyers, 2003 - 2014
  • Million Dollar Advocates Forum, 2000 - 2014
  • Los Angeles Magazine, "Southern California Super Lawyers", 2004 - 2014
  • Lawdragon Magazine, "The Lawdragon 500 Leading Plaintiff's Lawyers in America", 2007
  • University of Sussex, Rotary Foundation Fellow, 1976 - 1977


  • Masters in Trial, ABOTA, 2002 - 2014
  • Southern California Defense, Southern California Defense Counsel, 2008
  • CAOC, 2011, 2013

Pro Bono Activities

  • St. Paul the Apostle School Board, 2000 - 2006
  • Society of the Friendly Sons of St. Patrick, 2008 - Present
  • Association of Business Trial Lawyers Board, 2012 - 2014
  • Friends of the Eel River


  • English