Sean O’Neill

Partner & Trial Attorney

Sean O’Neill is a partner and trial lawyer specializing in catastrophic personal injury, elder abuse, wrongful death, managed care liability, and medical malpractice matters on behalf of Plaintiffs throughout California.

Sean was born and raised in Carlsbad, California. He is a graduate of the University of Arizona and Pepperdine University School of Law. While in law school, Sean clerked in the United States Senate, Judiciary Committee, the Los Angeles County District Attorney’s office and for a number of high-profile litigation firms in Los Angeles. Mr. O’Neill was also selected to serve as a special editor to the Harvard Journal of Law & Public Policy.

After law school Sean served as corporate counsel at United States Steel Corporation in Pittsburgh, Pennsylvania. Reporting directly to the General Counsel, Sean assisted with the Company’s international trade enforcement litigation, the Company’s engagement on public policy issues, and advised the business units on a number of high priority corporate matters. Thereafter, Sean returned to California to work as a trial lawyer at a medical malpractice defense firm where he defended doctors and hospitals. While working for an insurance defense firm, Sean gained invaluable experience learning how insurance companies value claims and defend medical providers. In 2017, Sean took this experience and knowledge and dedicated his practice to representing victims of medical negligence and elder neglect at a boutique Plaintiff’s personal injury firm in West Los Angeles.

Sean joined Stalwart Law Group in 2020 to help launch the firm’s elder abuse and medical malpractice team. Since joining Stalwart, Sean and the firm have had tremendous success securing justice for victims of negligence and neglect. In his career Sean has helped secure more than $100 Million in recovery for his clients.

ELDER ABUSE

Sean is deeply passionate about providing a voice to our society’s most vulnerable population—our seniors. Sean has dedicated his practice to bringing justice to seniors who have suffered egregious injuries including: wrongful death, bedsores, fractures, multiple falls, dehydration, and other catastrophic injuries while residing at Nursing Homes, Assisted Living Facilities or a Hospital. Sean has secured tens of millions in settlements for elder abuse victims in California. His settlements include multiple seven figure and one eight figure settlement.

BIRTH INJURY

Many birth injuries are caused by medical negligence. Sean has represented numerous minors and their parent who have suffered catastrophic injuries during the labor and delivery process. Within this field Sean has extensive experience representing children who have suffered a permanent brachial plexus paralysis injury from the negligent management of a shoulder dystocia delivery. Sean has successfully secured tens of millions of dollars in structured settlements for his minor clients, which will help these children get the care they need as they mature into adulthood and beyond.

MEDICAL MALPRACTICE

Patients trust doctors and other healthcare professionals with their lives. When these professionals make mistakes that cause a patient harm, it may be considered medical malpractice. Sean specializes in catastrophic medical malpractice cases and is dedicated to bringing justice to those who have been permanently injured or killed as a result of medical negligence.

REPRESENTATIVE MATTERS

$18.5M – Medical Malpractice
$8.9M – Brain Injury
$1M – Elder Abuse
$2M – Medical Malpractice/Spinal Cord Injury
$5.9M – Medical Products Liability
$12.5M – Elder Abuse/Wrongful Death
$1.25M – Brachial Plexus Paralysis Birth Injury
$1M – Elder Abuse/Wrongful Death
$3M – Premises Liability/Dangerous Condition
$10M – Medical Malpractice/Cerebral Palsy
$8.5M – Spinal Cord Injury
$9M – Medical Malpractice/Cerebral Palsy
$3.3M – Medical Malpractice
$1.31M – Elder Abuse

 

 

 

 

Contact Information

Education

  • University of Arizona, B.A.
  • Pepperdine University School of Law, J.D.

Noteworthy

  • Founding 50 Member of Justice HQ
  • Best Lawyers: Ones to Watch in America
  • Lawdragon 500 X – The Next Generation, 2023
  • Southern California Super Lawyers “Rising Star,” 2021-2023
  • Member of the National Trial Lawyers Top 40 Under 40, 2018-present
  • Featured in PowerAgent News “LA’s Top 10 Attorneys” list, 2023
  • American Board of Trial Advocates Sidebar Program (Los Angeles Chapter), 2018

Professional Affiliations

  • Consumer Attorneys Association of Los Angeles
  • Consumer Attorneys of California
  • Orange County Trial Lawyers Association
  • California Advocates for Nursing Home Reform
  • American Association for Justice

Selected publications

Speaking Engagements

  • CALTCM Los Angeles – November 2-4, 2023 – (Post-Acute and Long-Term Care)
  • CAALA Vegas – August 31, 2023 – (Professional Negligence & Abuse)
  • Beverly Hills Bar Association – June 26, 2023 – (Best Practices for Mastering Depositions)
  • SCAHRM 42nd Annual Conference – Rancho Mirage, CA – May 10, 2023 (Modernizing MICRA)
  • TBI Med Legal Conference – San Diego, CA – March 11, 2023 (Bulletproof Strategies for Depositions)
  • Justice HQ MCLExtravaganza – January 13, 2023 (Impactful Depositions)
  • Law-Di-Gras – Carlsbad, CA – July 16, 2022 (When Mistreatment or Malunion Becomes Malpractice)
  • USC Leonard Davis School of Gerontology Mock Trial; Elder Abuse – October 2021
  • CAALA Webinar: Nursing Home Litigation Master Class: How to Maximize Your Elder Abuse Cases – June 2021
  • Justice Team Podcast: Nursing Home and Elder Abuse Cases – March 2021
  • Case Analysis Elder Abuse Verdict with Brian Poulter – October 2020

Contact Information

Education

  • University of Arizona, B.A.
  • Pepperdine University School of Law, J.D.

Noteworthy

  • Founding 50 Member of Justice HQ
  • Best Lawyers: Ones to Watch in America
  • Lawdragon 500 X – The Next Generation, 2023
  • Southern California Super Lawyers “Rising Star,” 2021-2023
  • Member of the National Trial Lawyers Top 40 Under 40, 2018-present
  • Featured in PowerAgent News “LA’s Top 10 Attorneys” list, 2023
  • American Board of Trial Advocates Sidebar Program (Los Angeles Chapter), 2018

Professional Affiliations

  • Consumer Attorneys Association of Los Angeles
  • Consumer Attorneys of California
  • Orange County Trial Lawyers Association
  • California Advocates for Nursing Home Reform
  • American Association for Justice

Selected publications

Speaking Engagements

  • CALTCM Los Angeles – November 2-4, 2023 – (Post-Acute and Long-Term Care)
  • CAALA Vegas – August 31, 2023 – (Professional Negligence & Abuse)
  • Beverly Hills Bar Association – June 26, 2023 – (Best Practices for Mastering Depositions)
  • SCAHRM 42nd Annual Conference – Rancho Mirage, CA – May 10, 2023 (Modernizing MICRA)
  • TBI Med Legal Conference – San Diego, CA – March 11, 2023 (Bulletproof Strategies for Depositions)
  • Justice HQ MCLExtravaganza – January 13, 2023 (Impactful Depositions)
  • Law-Di-Gras – Carlsbad, CA – July 16, 2022 (When Mistreatment or Malunion Becomes Malpractice)
  • USC Leonard Davis School of Gerontology Mock Trial; Elder Abuse – October 2021
  • CAALA Webinar: Nursing Home Litigation Master Class: How to Maximize Your Elder Abuse Cases – June 2021
  • Justice Team Podcast: Nursing Home and Elder Abuse Cases – March 2021
  • Case Analysis Elder Abuse Verdict with Brian Poulter – October 2020
Sean O’Neill Photo of Sean O’Neill sean@stalwartlaw.com 310-954-2000 ext. 707 Jane's home page: Colleague:
Siannah Collado
Elizabeth Teixeira
Guillermo F. Barrantes
Evan A. Barr
Jon Schwalbach
Steven Heimberg
David Angeloff
Cindy Hickox
Patrick Jacobs
Dylan Ruga
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