Skip to content Thomas M. Chairs


111 N. Front Street
Suite 100
Harrisburg, PA 17101

707 Grant Street
Suite 3800
Pittsburgh, PA 15219


J.D., Widener University School of Law, 1996

B.A., Political Science, Randolph-Macon College, 1992


Best Lawyers in America® distinction in Professional Malpractice Law - Defendants, 2020-2024


Thomas M. Chairs is a trial lawyer in the Healthcare and Commercial Litigation practice groups of GRSM. Thomas is a Partner of the firm with offices in Pittsburgh and Harrisburg, Pennsylvania and is Co-Managing Partner of the Harrisburg office.

Thomas counsels clients in complex litigation matters. Early in his career he assumed the role of lead counsel in major jury trial proceedings. He has successfully tried cases to verdict in more than a dozen counties throughout Pennsylvania. Thomas has handled hundreds of litigated matters. His in depth experience in State and Federal Court serves as a fundamental advantage for clients in any civil dispute.

Throughout his career, Thomas has maintained a case load that includes representation of national, regional and closely held corporations. On the basis of his vast experience as a trial attorney, Thomas has been designated Board Certified in civil trial advocacy by the National Board of Trial Advocacy.

Thomas works closely with self insured organizations predominantly in the health care field. His representation of healthcare providers includes litigation and extends to counsel in licensing issues, compliance with governmental regulations, risk management and policy implementation. He regularly participates in the orientation of hospital personnel. Thomas also lectures on loss avoidance and best practices.


  • Maryland
  • Pennsylvania
  • Supreme Court of Maryland
  • Supreme Court of Pennsylvania
  • U.S. Court of Appeals for the Third Circuit
  • U.S. District Court, Middle District of Pennsylvania


  • Lancaster Bar Association
  • Pennsylvania Bar Association