Over 100 Years of Combined Experience in Criminal Law


Mark D. Johnson

Born and raised in central Illinois, Attorney Mark D. Johnson provides aggressive representation for the residents of his home state. Over the last two decades, he has defended clients against a wide range of charges, including multi-million dollar fraud cases, drug cases, and murder cases. Due to his diligent tactics, he has been included in the Top 100 Lawyers in the United States by The National Trial Lawyers Association.

Attorney Johnson founded the firm in 1996. Since then, he and his legal team have opened offices in Peoria, Springfield, and Decatur, now employing some of the best former prosecutors. Johnson’s own experience as a former prosecutor allows him to understand the various intricacies involved with both sides of every case he handles, giving him an upper hand while fighting for the rights of his clients.

Prior to starting his own firm, Johnson enlisted in the Air Force National Guard and worked as a Crew Chief for the 183rd Tactical Fighter Group where he flew F-4 and F-16 fighter jets. In addition, Johnson worked as a full-time police officer as he completed his undergraduate studies at Illinois State University. Not long after graduation, he moved on to pursue his law degree. This would lead to his job as a prosecutor with the Illinois Attorney General's Office where he handled consumer fraud cases as an Assistant Attorney General in the Attorney General's Consumer Fraud Bureau.

While working as a First Assistant State's Attorney in Woodford County Illinois, he prosecuted various high-level criminal cases. His collective public services and experiences provide him with a unique background that is both effective and gives useful insight into the different cases he handles.


  • Northern Illinois University, College of Law – DeKalb, Illinois (J.D.)
  • Illinois State University (B.S.)

Bar Admissions

  • Illinois
  • U.S. District Court Northern District of Illinois
  • U.S. District Court Southern District of Illinois
  • U.S. District Court Central District of Illinois

Professional Memberships & Associations

  • National Trial Lawyers - Top 100 Trial Lawyers
  • Illinois Association of Criminal Defense Lawyers
  • American Trial Lawyers Association
  • American Bar Association
  • Federal Bar Association
  • Association of Trial Lawyers of America
  • National Association of Criminal Defense Lawyers
  • Illinois State Bar Association
  • Illinois Bar Foundation
  • American Association for Justice
  • Better Business Bureau
  • McLean County Bar Association
  • Peoria County Bar Association
  • Macon County Bar Association
  • Champaign County Bar Association
  • Sangamon County Bar Association


Why Should You Entrust Your Case to Our Firm?

Consider the Following:
  • Over 100 years of combined experience in Criminal Law.

  • Our attorneys have won numerous awards and distinctions.

  • Customized results-driven case strategies.

  • Passionate legal representation, inside and outside of court.