O'Brien & Zehnder Law Firm

O'Brien & Zehnder Law Firm

Dedicated to helping injured persons and their families seek maximum financial recoveries for their suffering.

Firm Overview

O'Brien & Zehnder Law Firm was founded in 1996 by John M. O'Brien on the belief that every injured person deserves the best legal representation. Since then our law firm has gained an excellent reputation for its aggressive and effective representation and also an outstanding record of successful case results with million of dollars recovered in compensation for our clients. If you suffered an injury, either physically or mentally, due to the negligence of another person it is very important to seek legal assistance with a proven record in personal injury cases. An experienced personal injury attorney can help you obtain the maximum compensation for your personal injury accident. Don't hesitate and contact us today for a free initial consultation!

Main Office

Elk Grove Office
9401 E. Stockton Blvd.
Suite 225
Elk Grove CA 95814


(916) 714-8200


(916) 714-8201


Free Initial Consultation?


Services Offered For Fixed Fees?

Our law firm works on a contingency fee basis.

Office Information

Office Hours

8am-5pm PST

Office Manager

Brenda Marchant

Emergency After Hours


Languages Spoken

English, Spanish

How did your firm decide on the primary area of practice(s)?

Mr. O'Brien's only goal during law school was to become a personal injury attorney and to offer justice to injured victims. Our history over the past 23 years proves how successful we've been achieving that goal and it remains our only mission even today. Being a personal injury attorney is a great honor and responsibility.

What distinguishes your law firm from others?

O'Brien & Zehnder Law Firm is different than any other law firm because of the way we treat our clients. You are not a case number for us, we treat each of our clients as part of our family and give each of them the individual attention he or she deserves. We have the experience to take on any defendant to ensure justice for our clients.

What experience or education distinguishes your lawyers from others?

With over 23 years of experience and history of successful case results, Mr. O'Brien enjoys an excellent reputation for integrity and aggressive advocacy with an impressive record of jury verdicts, arbitration awards and settlements on behalf of his clients.

What are your firm's strengths and style?

At O'Brien & Zehnder Law Firm we are dedicated to providing injured victims justice and maximum financial recovering for their suffering and our vast experience makes it easy for us to deliver the best results for our clients.

John O'Brien

O'Brien & Zehnder Law Firm

Prior to funding O'Brien & Zehnder Law Firm, Mr. O'Brien had spent years working for some of the biggest law firms in California, Brobeck, Phleger & Harrison practicing personal injury and wrongful death cases. In 1996 Mr. O'Brien started his own practice with one goal in mind, to make sure that injured victims receive justice and just compensation they deserve.

Since then Mr. O'Brien has managed to achieve an impressive record of verdicts, arbitration awards and settlements on behalf of his clients.

With over 23 years of experience John M. O'Brien is a highly successful and experienced personal injury attorney.
If you want a free evaluation of your case contact us today.

Member, American Association of Justice
Member, Capitol City Trial Lawyers Association
Member, Consumer Attorneys of California
Associate Member, American Board of Trial Advocates
Member, California State Bar
Member, University of Southern California Law Review

Achievements & Awards
Trial Advocate of the Year - Capitol City Trial Lawyers Association 2009
AV Rating - Martindale-Hubbell

Bar Admissions
California State Bar
Sacramento County Bar Association
U.S. District Court
U.S. Court of Appeals
Ninth Circuit
Eastern & Northern District of California


Bar Number: 148757
California, 1990


University of Southern California Law School
JD - Juris Doctor, 1990

University of the Pacific
BA - Bachelor of Arts, 1987

Grant Zehnder

O'Brien & Zehnder Law Firm

Before joining O'Brien & Zehnder Law Firm, Grant Zehnder spent three years as a defense civil litigator with his practice focusing mainly on personal injury, labor and employment matters, working for Cook Brown, LLP, in Sacramento as an associate attorney.

Prior to his bar admission, Mr. Zehnder worked as a volunteer at the Sacramento County Public Defender's Office where he gained valuable courtroom experience.

Member, Capitol City Trial Lawyers Association
Member, California State Bar
Member, Sacramento County Bar Association
Member, Sacramento Metro Chamber

Achievements, Awards & Honors
Order of the Coif (Top 10%)
Traynor Honor Society
Comment Writer, McGeorge Law Review
Dean's Honor List, 2007-2010
Dean's Scholarship Award, 2007-2010
Witkin Award for the Highest Grade in Torts, 2007-2008
Witkin Award for the Highest Grade in Evidence, 2008

Bar Admissions
California State Bar
Sacramento County Bar Association


Bar Number: 271228
California, 2010


University of the Pacific, McGeorge School of Law
Juris Doctor with Great Distinction, 2010

University of California, San Diego
Bachelor of Sciences in Management Science; Minor in Psychology, 2006

* Nolo has confirmed that every member attorney has a valid license and is in good standing with the state agency that licenses lawyers. Any past disbarments and suspensions (with possible exceptions for minor violations or nonpayment of dues, in our discretion) will be indicated accordingly in the badge. Member attorneys are required to notify Nolo immediately if they become the subject of any disciplinary action by any state licensing agency.