Groopman Brings Extensive Antitrust, Healthcare Experience to Firm
NEW YORK – December 11, 2025 – Steven Groopman has joined DiCello Levitt’s nationally recognized Antitrust and Competition Litigation Practice Group as a partner. Groopman is recognized for his creative and compelling advocacy in complex antitrust and consumer matters, with particular expertise in the healthcare industry.
“We are thrilled to welcome Steve to our fast-growing antitrust and competition litigation team,” said Greg Asciolla, chair of DiCello Levitt’s Antitrust and Competition Litigation Practice Group and managing partner of the firm’s New York office. “Steve’s experience in complex antitrust and consumer litigation, along with his creative approach to advocacy, will further strengthen our talented group.”
In the past year alone, DiCello Levitt’s antitrust attorneys have been appointed to critical leadership roles in several major nationwide antitrust class actions. The preeminent team is expanding and now features more than 15 attorneys, including former government officials and institutional leaders.
“DiCello Levitt’s reputation for innovative and impactful antitrust litigation is second to none,” Groopman said. “I am delighted to join this growing, dynamic team and continue advocating for those harmed by anticompetitive conduct.”
Groopman has led groundbreaking antitrust cases, including litigation against pharmaceutical companies for delaying generic competition and undermining biosimilar competition, and residential real estate brokerages for collusion. He also has helped lead cases addressing unlawful debt collection and consumer protection violations under RICO, TILA, and state law. He began his legal career clerking for the Hon. Dickinson R. Debevoise on the U.S. District Court for the District of New Jersey and has held roles in both litigation and white-collar defense.
Groopman earned his J.D. from George Washington University Law School and his A.B., magna cum laude, in Political Science from Brown University.
DiCello Levitt’s Antitrust and Competition Litigation Practice Group has litigated some of the largest antitrust class actions in the United States, often filing the first case, advancing novel theories, and creating new law. Firm attorneys are leaders in the antitrust field, including in various national and state antitrust organizations, and have garnered international and national recognition from leading publications, including Chambers USA (top Band 1 honors), Benchmark Litigation, The Legal 500, Lawdragon, and Law360.
About DiCello Levitt
At DiCello Levitt, we’re dedicated to achieving justice for our clients through antitrust, class action, environmental, mass tort, securities, financial services, business-to-business, public client, whistleblower, personal injury, and civil and human rights litigation. Our lawyers are highly respected for their ability to litigate and win cases—whether by trial, settlement, or otherwise—for people who have suffered harm, global corporations that have sustained significant economic losses, and public clients seeking to protect their citizens’ rights and interests. Every day, we put our reputations—and our capital—on the line for our clients.
DiCello Levitt has achieved top recognition as Plaintiffs Firm of the Year and Trial Innovation Firm of the Year by the National Law Journal, in addition to its top-tier Chambers and Benchmark ratings. For more information about the firm, including recent trial victories and case resolutions, please visit www.dicellolevitt.com.
Media Contact Caitlin Whitehurst, Director of Communications, cwhitehurst@dicellolevitt.com
