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Greg Sonstein

Greg Sonstein

Greg Sonstein is an attorney with Panish Shea & Boyle LLP and focuses his practice in mass tort, product liability, and wrongful death litigation, specializing in cases involving injuries caused by defective medical devices and pharmaceutical drugs. A tireless advocate for his clients, Mr. Sonstein and his trial team have successfully recovered millions of dollars for those who have been harmed as a result of someone else’s negligence.

Currently, Mr. Sonstein and PSB attorney Pete Kaufman are leading a nationwide case against a major medical device manufacturer involving a defectively designed medical device in the Olympus Duodenoscope litigation. Mr. Sonstein also assists the firm in the Southern California Gas Leak Cases involving the 2015 natural gas well blowout in Porter Ranch; and is actively involved in numerous cases involving a defective pharmaceutical drug called Lariam, or mefloquine, that has left many U.S. Veterans permanently disabled with severe neuropsychiatric symptoms.

Prior to joining Panish Shea & Boyle LLP in 2018, Mr. Sonstein was a law clerk for the firm and previously clerked at two nationally recognized law firms specializing in mass tort litigation, consumer class actions, and personal injury cases. He also served as a legal extern in the Los Angeles County District Attorney’s Office specializing in consumer fraud.

A graduate of Southwestern Law School, Mr. Sonstein received his bachelor’s degree with honors from Georgia State University in Atlanta, Georgia with a degree in Philosophy. During his time as an undergraduate in Atlanta,  he worked in state politics and served as the Chief of Staff for a local state senator. Upon graduation, Mr. Sonstein entered into graduate studies at the Hebrew University of Jerusalem where he received a master’s degree in Israel Studies.

Mr. Sonstein is a member of the State Bar of California and an active member of various professional organizations including the Consumer Attorney Association of Los Angeles, Consumer Attorneys of California and the American Association for Justice.



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