False Claims Act Lawyer Chicago

Experienced and Knowledgeable

Michael Rosenblat has been prosecuting False Claims Act cases for almost 20 years: first for the State of Illinois as lead prosecutor for the Illinois Attorney General’s Medicaid Fraud Unit (“MFCU”), part of the Illinois State Police Medicaid Fraud Control Unit, and then as Deputy Chief of the Special Litigation Bureau of the Illinois Attorney General’s Office. The MFCU focuses on fraud affecting the Medicaid Program, and the Special Litigation Bureau prosecutes all other violations of the Illinois False Claims Act.

Thorough Preparation

Mr. Rosenblat’s preparation of False Claims Act cases ensures that your case is put in the best position to reach a successful outcome. The Rosenblat Law firm stands behind the False Claims Act cases it files and will pursue them even if the government declines to intervene and take over the case, so long as the case continues to be justified by the law and the facts. The firm’s proactive approach and investigation of False Claims Act violations produces complaints and disclosure statements, which clearly and effectively demonstrate the allegations alleged in the False Claims Act qui tam complaint.


Although the Rosenblat Law firm is smaller than some other law firms purporting to have a False Claim Act practice, many of those firms only recently became involved in False Claims Act litigation after significant False Claims Act recoveries were in the news, such as the $334 million verdict against Amerigroup. (Mr. Rosenblat was the only attorney who represented Mr. Tyson, the relator in Tyson v. Amerigroup, throughout this litigation, even after bringing additional law firms on.) Mr. Rosenblat routinely collaborates with other experienced False Claims Act law firms to assist in the litigation of declined cases that should be pursued. Mr. Rosenblat has co-counseled with firms from New York, Chicago, and Texas.

Personal Attention

When you work with Mr. Rosenblat, you can rest assured that he will personally represent you and work on every aspect of your case, and you will never have to be concerned that your case will be passed off to an associate. Although other attorneys may be assigned to work on your case, Mr. Rosenblat will always remain your primary contact and will have full responsibility for your representation.

Successful Results

Michael C. Rosenblat is one of the Chicagoland areas most successful False Claims Act attorneys. Mr. Rosenblat is a sought-after author and speak on the False Claims Act and has co-authored Prosecuting and Defending Claims Under the Illinois False Claims Act, published by the Illinois Institute of Continuing Legal Education (IICLE) and has spoken about the False Claims Act before a local bar association as part of their continuing legal education program. (CLE materials can be found here.) Michael C. Rosenblat has been representing the Plaintiffs in False Claims Act cases, since being assigned to the Illinois Attorney General’s Medicaid Fraud Control Unit (“MFCU”).

Tested Representation

Mr. Rosenblat represented the State of Illinois in a False Claims Act case against Walgreens as part of the National Association of Medicaid Fraud Control Units global settlement team.

Mr. Rosenblat also represented Cleveland Tyson in Tyson v. Amerigroup, a False Claims Act lawsuit that ultimately settled for $225 million. Mr. Rosenblat and Mr. Tyson agreed to work together after the government declined to intervene and after the case was unsealed. Mr. Rosenblat’s legal analysis allowed him to develop a cause of action that many other attorneys believed was not viable and was able to advance the case toward trial. After defeating Amerigroup’s Motion to Dismiss, Mr. Rosenblat brought in additional law firms to create the legal team that reached this outstanding resolution.

Rosenblat Law represents whistleblowers throughout the United States.


If you have uncovered fraud against the government, Michael C. Rosenblat can help. You can reach Chicago whistleblower attorney Michael C. Rosenblat at 847-480-2390. You can also contact our law firm online.