Michael J. Cassidy


Areas of Practice

Business and Corporate Law, Municipal Law, Educational / School


The University of Notre Dame, B.S. Preprofessional Studies
The Dickinson School of Law of The Pennsylvania State University, J.D.

Michael J. Cassidy is a seasoned attorney with broad experience helping large and small institutional entities navigate through complex legal challenges. He concentrates his practice in both the public and private sectors, having represented public school districts, municipalities, and municipal authorities as both solicitor and special counsel for over twenty years, as well as businesses in a variety of commercial sectors. Additionally, he has extensive experience with both residential and commercial land development projects, with involvement in all stages from land acquisition, zoning, permitting, and land development plan approval. Prior to starting his legal career, Mr. Cassidy served in the United States Navy as a commissioned naval flight officer flying tactical jets. He currently serves as Johnson Duffie’s Administrative Shareholder with responsibility for day-to-day management of the firm, as well as head of the Municipal & School Law Practice Group.

Mr. Cassidy is licensed to practice in:

  • All Pennsylvania Courts
  • U.S. District Court – Middle District of Pennsylvania

Mr. Cassidy currently holds the following solicitorships:

  • Cumberland Valley School District
  • Cumberland County Tax Bureau
  • Dauphin Borough
  • Dauphin Borough Municipal Authority
  • Franklin County Tax Bureau
  • Goldsboro Borough
  • Goldsboro Municipal Authority
  • Mechanicsburg Borough
  • New Cumberland Borough
  • Northern Lebanon County Authority