Jeffrey K. O'Connor Partner


Springfield, MA

Phone: (413) 231-1203 Fax: (413) 739-3125 Download VCard

Jeffrey K. O'Connor

Jeff is a partner in the Springfield office of Morrison Mahoney. His practice focuses on the defense of medical and legal professionals, health care law, employment litigation and general liability defense. He has successfully represented professionals, businesses and non-profit organizations in a variety of complex civil actions in state and federal court.

In addition, Jeff regularly counsels health care providers in matters of regulatory compliance, including HIPAA and Stark, as well as in proceedings before state and federal administrative boards.

While in law school, Jeff served as a staff member and the Senior Note Editor of the Western New England Law Review.


  • Massachusetts Bar Association
  • Hampden County Bar Association
  • Western New England Law Review, Advisory Committee 
  • Defense Research Institute (DRI)

Honors & Awards

  • Elected by his peers to the Best Lawyers: "Ones to Watch" Medical Malpractice Law - Defendants List (2021-2022)
  • Named a "Rising Star" in the area of medical malpractice defense by the publishers of Boston Magazine (2014-2016)

Springfield, MA Office

Tower Square
1500 Main Street
Suite 2400
Springfield, MA 01115
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Areas of Practice

Bar Admissions

  • Massachusetts
  • United States District Court for the District of Massachusetts


  • B.A., cum laude — Bradford College
  • J.D., cum laude — Western New England University School of Law

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