Steven J. McMahon

Mr. Steven J. McMahon is a Partner at Boggs, Avellino, Lach & Boggs, L.L.C. His Juris Doctor Degree was awarded from Southern Illinois University School of Law, Magna Cum Laude. Mr. McMahon obtained his undergraduate degree from the University of Wisconsin Platteville, where he studied as a National Merit Scholarship Award Winner.

Mr. McMahon has concentrated his practice in insurance defense in the areas of personal injury and medical/dental malpractice. He has significant experience in workers' compensation defense representing employers, insurers and third-party administrators before the Division of Workers' Compensation, the Illinois Industrial Commission, the Labor and Industrial Relations Commission and the Courts of Appeals for the Eastern and Western Districts of Missouri.

Mr. McMahon is licensed to practice law in Missouri and Illinois. He is also admitted to practice before the United States District Court of the Eastern District of Missouri.


Southern Illinois University School of Law at Carbondale, Illinois, J.D. Magna Cum Laude, 1990

University of Wisconsin Platteville, Platteville, Wisconsin, B.S. Criminal Justice, 1986


Illinois, 1991, Missouri, 1990, and United States District Court for the Eastern District of Missouri.

Practice Areas:

Litigation Defense including insurance defense, medical/dental malpractice defense, workers' compensation defense, and personal injury.


Missouri Bar, Illinois Bar, Admitted to practice United States District Court for the Eastern District of Missouri, and the Bar Association of Metropolitan St. Louis.  


City of University City Council member.  Volunteer with Boy Scout Troop 493.  Past Treasurer of UCHS PTO.  Past Chairperson of the City of University City Pension Board.