Mary Clare Bonaccorsi

Chair, Cross Department Litigation; Managing Partner, Chicago

Polsinelli, P.C.



Member since:


Mary Clare Bonaccorsi serves as the Firm’s Cross Department Litigation Chair and Chicago Managing Partner.Drawing on over 30 years of experience, Mary Clare is a trusted counsel and business adviser to C-suites, boards, and management teams. She has focused her practice in the health care and life sciences industries, representing pharmacies, medical equipment suppliers, home care and other post-acute providers, academic medical centers, hospitals and health systems, laboratories, ambulatory surgery centers, and dialysis providers.Mary Clare works closely with legal, compliance, and operational teams to implement litigation avoidance strategies and takes a practical and business-minded approach to litigation. She previously served as Deputy General Counsel to a publicly-traded home infusion provider and specialty pharmacy and understands the importance of having a deep and practical understanding of clients’ business operations and goals.Mary Clare has tried cases before judges and juries in state and federal courts throughout the country, and has successfully led cases involving shareholder disputes, breach of contract claims, unfair competition and Lanham Act claims, business torts and False Claims Act/qui tam claims. She regularly defends clients in government and commercial payor disputes, audits and investigations.

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