Joanna McCallum’s practice focuses on appellate matters and business litigation, specializing in the areas of healthcare law, insurance law, unfair competition, RICO, ERISA, anti-SLAPP, and antitrust law. She has represented hospital systems, health insurers, nursing homes, finance companies, and multi-employer pension trusts in a variety of appellate and litigation matters in federal and state courts.

Ms. McCallum served as law clerk to the Honorable Kim McLane Wardlaw in the United States District Court for the Central District of California (now on the Ninth Circuit) in 1996 - 1997.