In addition to working closely with managed care industry clients, Dianna handles complex business disputes for clients in a variety of other industries. Her practice includes representing clients in high-stakes breach of contract matters, breach of fiduciary duty claims, misappropriation of trade secret claims, unfair trade practices, and shareholder and officer/director litigation. Dianna is also experienced in defending clients against claims in class actions.

Dianna has tried cases in state courts, federal courts, and arbitration proceedings across the country.  Dianna also has substantial appellate experience, having successfully briefed and argued many appeals to state and federal appellate courts.