John A. “Jay” Gillen, III

John A. ‘Jay’ Gillen, III joined Sandberg Phoenix in 2025, focusing his practice in health law and defense litigation. With experience in toxic tort, products liability, personal injury, business litigation, and health law, Jay is committed to securing favorable outcomes for his clients. He takes a strategic and client-centered approach, working closely with clients to develop tailored solutions and exploring innovative legal strategies.

A Kansas City native, Jay pursued his education out of state before returning home to serve his community. He has successfully handled cases from inception to resolution, including securing wins on summary judgment and negotiating favorable settlements before litigation begins. With a background in history, he brings a meticulous research-driven approach to the law, ensuring that each case is built on a strong foundation of precedent and strategy. In 2024, he further honed his litigation skills by serving as second chair in a trial.

Outside of the office, Jay enjoys spending time with his friends, family, and his faith community. Reading, working out, and sport shooting are a few of his favorite hobbies.