For almost 30 years, Don Warren has specialized in representing plaintiffs and whistleblowers in business fraud and Medicare and Defense Deptartment fraud qui tam cases. As such, Mr. Warren was a name partner in the West Coast firm of Monaghan & Warren, whose results included more than $100 million in verdicts and recoveries for its clients, including the largest verdict in California in 1997. Mr. Warren has successfully prosecuted qui tam cases against some of the world’s most powerful conglomerates, including more than 100 research hospitals, Blue Cross, Northrop, MCI, Sprint, Boeing and Litton in the United States, and multi-national corporations headquartered in Germany, Switzerland, Belgium and Sweden. Mr. Warren’s victories have set national records for the largest qui tam recoveries of their kind. With an established reputation for success against the country’s largest law firms, his many legal precedents have been cited hundreds of times by Courts throughout the nation.
In 1989, Mr. Warren was recognized as one of the nation’s preeminent trial lawyers and was inducted into the prestigious American Board of Trial Advocates into which less than 1% of attorneys are admitted. In 1999, Mr. Warren was honored by the nation’s top lawyers as statewide president of the American Board for all of California. In 2005, Mr. Warren became one of only a handful of attorneys in the nation to have received the distinction of Life Fellow of the American Board.
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Currently Mr. Warren is a partner at the WARREN | BENSON LAW GROUP, a firm which has unmatched success in setting qui tam national precedents, and is also the national leader in successful qui tam cases. Additionally, the firm has substantial real world experience in healthcare auditing and defense contracting issues, that is unparalleled by any other whistleblower firm.
Some of their results include;
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THE WARREN | BENSON LAW GROUP
Los Angeles / Orange County
620 Newport Center Drive, Suite 1100
Newport Beach, California 92660
Tel: (949) 721-6636
San Diego
7825 Fay Ave., Suite 200
La Jolla, California 92037
Tel: (858) 456-1900
Anchorage
Tel: (907) 264-6756
































