Dianna Calaboyias Wyrick Photo

Dianna is a partner in the Global Commercial Disputes Group. She concentrates her practice on litigating and resolving complex commercial litigation matters for her clients with a particular emphasis on representing clients in the managed care industry.  The firm's Managed Care team includes litigators and regulatory specialists with a deep knowledge of the issues impacting the Managed Care environment, including ERISA, payer/provider networks, drug formularies, and the Affordable Care Act.  This specialized team works with the largest Managed Care plan in the country.


  • University of Pittsburgh School of Law, J.D., cum laude, University of Pittsburgh Law Review
  • Ohio University E.W. Scripps School of Journalism, B.S., Journalism, summa cum laude

  • Pennsylvania

  • U.S. District Court - Eastern District of Pennsylvania
  • U.S. District Court - Western District of Pennsylvania
  • U.S. District Court - District of Colorado
  • U.S. Court of Appeals - Third Circuit
  • U.S. District Court - Western District of Oklahoma
  • U.S. District Court - Eastern District of Oklahoma

  • Allegheny County Bar Association
  • Leukemia & Lymphoma Society of Western Pennsylvania and West Virginia – Board Member (2009-2014)
  • Western Pennsylvania Professionals for the Arts – Volunteer lawyer handling pro bono cases for arts community since 1996
  • American Inns of Court, University of Pittsburgh Chapter (1999-2002)
  • University of Pittsburgh – Member of the Institutional Review Board for Biomedical Research (1995-1999)

Awards & Recognition

  • Selected through peer review for inclusion in The Best Lawyers in America© for Commercial Litigation, 2024