Injury Attorney John O'Brien
Decorated Personal Injury LawyerJohn O’Brien
John O’Brien founded the Elk Grove-based firm, the O’Brien & Zehnder Law Firm, in 1996, practicing personal injury. He is recognized throughout the California legal community as a zealous and effective advocate for individuals who have been catastrophically injured. Mr. O’Brien has an excellent reputation for aggressive advocacy and integrity, which has helped him obtain numerous multi-million dollar jury verdicts and settlements across a wide array of personal injury cases.
Mr. O’Brien graduated Magna Cum Laude from the University of the Pacific in 1987, receiving his Bachelor’s degree with Honors in Political Science and Economics. He then went on to earn his Juris Doctor with Honors from the University of Southern California in 1990. In addition to being admitted to practice in all California courts and in the United States Court for the Northern and Eastern districts of California, Mr. O’Brien has also been admitted to practice in the Ninth Circuit Court of Appeals.

Additionally, Mr. O’Brien is an active member of several professional organizations including the American Board of Trial Advocates, the American Association for Justice, the Capitol City Trial Lawyers Association, and the Consumer Attorneys of California.
Brobeck, Phleger & Harrison – Associate, 1990 – 1996
“My time at Brobeck, Phleger & Harrison provided me with a unique perspective on how a big company defends itself against personal injury lawsuits. My training there has proven to be an invaluable asset in my work as a plaintiffs’ personal injury attorney.”
– John M. O’Brien
The O’Brien & Zehnder Law Firm – Owner, Founding Partner Attorney, 1996 – present
“We pride ourselves in seeking justice for every client who has been injured as a result of another’s negligent act. We don’t rest until each and every client has been fully compensated for their injuries.”
– John M. O’Brien
EDUCATION
- University of Southern California Center
(J.D., Honors, 1990) - University of the Pacific
(B.A., Honors, Magna Cum Laude, Political Science/Economics, 1987)
Decorated Sacramento Injury Lawyer
John O’Brien is a decorated Sacramento Injury Lawyer. From AVVO to Super Lawyers, Mr. O’Brien has been recognized for over two decades as an aggressive and tenacious injury litigator. John has the tenure, track record, and toughness to take ANY injury case the distance. Big insurance firms and high powered corporate lawyers don’t detour Mr. O’Brien from tackling your injury case. John isn’t afraid of anyone or anything. Learn more about Mr. O’Brien by clicking the button below.
Whether you’re facing a major accident injury claim or you are mourning the loss of a loved one – We are here to help
John O’Brien is a seasoned Sacramento Personal Injury Attorney. If you have questions about a car or commercial trucking accident claim, or if you have any injury-related concerns, click the button below to learn more about John and his history as an injury attorney in Sacramento.
What are you waiting for?

OZ LAW INJURY LAW FIRM ADDRESS
9401 E Stockton Blvd, #225
Elk Grove, CA 95624
We Service Elk Grove & Sacramento
OZ LAW PHONE NUMBER
(916) 714-8200
OZ LAW HOURS OF OPERATION
24 Hours a Day