Practice areas: Personal Injury, Medical Malpractice, Products Liability; view more
Licensed in Illinois since: 2003
Education: DePaul University College of Law
A fierce advocate with over 20 years of experience, William J. McMahon maintains consistency in his eminent representation on behalf of his clients, fighting tooth and nail to get them the compensation they deserve so they can kickstart their recovery. At the law office of Hoey & Farina in Chicago, Illinois, he emphasizes his practice on matters pertaining to railroad injuries and the Federal Employers’ Liability Act, motor vehicle accidents, construction accidents, premises liability, medical malpractice and products liability, among many others.
After completing his undergraduate studies at St. John’s College, Mr. McMahon went on to pursue a higher education at the Monterey Institute of International Studies, where he earned his Master of Arts degree. With a fervent desire to help others, he chose to enter the legal field through his enrollment in the DePaul University College of Law, where he strengthened his shrewd legal acumen and foundation that are still evident in the advocacy he provides for his clients today. Becoming licensed to practice law in Illinois in 2003, he later became admitted to practice before the following courts:
- The United States District Courts for the Northern, Southern and Central Districts of Illinois
- The United States District Courts for the Eastern and Western Districts of Wisconsin
- The United States District Courts for the Northern and Southern Districts of Iowa
- The United States District Court for the District of North Dakota
- The United States District Court for the District of Kansas
- The United States District Court for the District of Ohio
- The United States District Court for the Western District of Michigan
- The United States District Court for the Eastern District of Kentucky
- The Supreme Court of Illinois
- The Supreme Court of the United States
Outside his law practice, Mr. McMahon maintains close affiliations with many legal organizations to help progress the standard of client service in his industry to greater heights, including the Academy of Rail Labor Attorneys, the DePaul University Law Association, the Illinois Trial Lawyers Association and The Chicago Bar Association.
Practice areas
Personal Injury - General: Plaintiff, Personal Injury - Medical Malpractice: Plaintiff, Personal Injury - Products: PlaintiffFocus areas
Animal Bites, Assault, Birth Injury, Brain Injury, Construction Accident, Delayed or Incorrect Diagnosis, Dental Malpractice, Dram Shop Laws, Informed Consent, Medical Devices, Medical Malpractice, Motor Vehicle Accidents, Motor Vehicle Defects, Personal Injury - Defense, Personal Injury - Plaintiff, Pharmaceutical, Premises Liability - Plaintiff, Sexual Abuse - Plaintiff, Slip and Fall, Toxic Mold, Trucking Accidents, Wrongful Death
- 60% Personal Injury - General: Plaintiff
- 20% Personal Injury - Medical Malpractice: Plaintiff
- 20% Personal Injury - Products: Plaintiff
First Admitted: 2003, Illinois
Professional Webpage: http://www.hoeyfarina.com/team/william-j-mcmahon
Bar / Professional Activity
- State of Illinois, 2003
- United States District Court for the District of Nebraska
- United States District Court for the Northern District of Indiana
- United States District Court for the Southern District of Indiana
- The Chicago Bar Association, Member
- Illinois Trial Lawyers Association, Member
- DePaul University Law Association, Member
- Academy of Rail Labor Attorneys, Member
- Supreme Court of the United States
- Supreme Court of Illinois
- United States District Court for the Eastern District of Kentucky
- United States District Court for the Western District of Michigan
- United States District Court for the District of Ohio
- United States District Court for the District of Kansas
- United States District Court for the District of North Dakota
- United States District Court for the Southern District of Iowa
- United States District Court for the Northern District of Iowa
- United States District Court for the Western District of Wisconsin
- United States District Court for the Eastern District of Wisconsin
- United States District Court for the Central District of Illinois
- United States District Court for the Southern District of Illinois
- United States District Court for the Northern District of Illinois
Honors
- One of the Top Ten FELA Attorneys in Illinois in 2021 and 2022 for Leading Lawyers
Educational Background
- St. John’s College, B.A.
- Monterey Institute of International Studies, Master of Arts
Office location for William J. McMahon
444 W. Lake Street
Suite 1700
Chicago, IL 60606
Phone: 312-825-0824
Selections
- Super Lawyers: 2025 - 2026