Mark M. Brennan


Brennan Burtker LLC
20 N Clark St, Suite 1800
Chicago, IL 60602
United States

Tel: 312.676.1901


Mark M. Brennan is the Managing Partner of Brennan Burtker LLC and Chairman of the Executive Committee. He devotes his law practice to civil litigation and issues pertinent to the health care profession. He has successfully tried several cases to verdict. Mr. Brennan concentrates his trial practice in the area of medical malpractice defense but also represents physicians and hospitals in all areas of litigation involving commercial, administrative and personal tort matters.

He represents some of Chicago’s top children’s hospitals and pediatric specialists, and has defended some of the most complex and highest profile cases filed against academic medical institutions both at his former firm and at Brennan Burtker.

In addition to his litigation practice, Mr. Brennan serves as a consultant to many Chicago area hospitals on matters ranging from evolving health law pertaining to HIPAA, quality assurance, consent and other regulatory compliance issues to trends in medical malpractice law and medical device litigation.

Mr. Brennan’s defense of highly complex and high exposure medical malpractice cases for academic medical centers has been invaluable to the protection of the healthcare industry.  In addition to his impressive trial record, which most recently includes a defense verdict in a devasting neurologic injury case where the jury was asked to award nearly $50 million, his creative defense strategies and careful client guidance has protected literally tens of millions of dollars in reserves and assets exposed in the cases he defends.

He is a member of the American Bar Association, the Illinois State Bar Association, the Chicago Bar Association and various bar committees and sections pertinent to his areas of practice. Mr. Brennan was also selected as a Leading Lawyer, as compiled by the Law Bulletin Publishing Company, in health law and medical malpractice defense law since 2014 and as a Super Lawyer since 2018.

Mr. Brennan is the author of “Legal Issues Involving Children – A Hospital’s Guide” and “Jury Selection: A Defendant’s Perspective.” Mr. Brennan has also lectured and authored numerous papers dealing with issues of consent and confidentiality as they pertain to children in a health care setting and hospital law at various Chicago area hospitals. In addition, Mr. Brennan has lectured on legal privileges in the context of medical malpractice actions including the Medical Studies Act, HIPAA and the physician-patient privilege at hospitals and various bar association seminars for lawyers.

Brennan Burtker is most proud of its formation of the healthcare practice group. Using their experience as courtroom litigators, Brennan Burtker attorneys have a unique perspective to offer the legal healthcare market. The firm’s health care services include drafting contracts, designing peer review processes and protocols, drafting or revising patient consent forms, negotiating disputes between healthcare partners, fostering mutually beneficial relationships among hospitals, and creating business entities for entrepreneurial physicians.

There is a discrete advantage to having experienced litigators provide these services. The lawyers at Brennan Burtker utilize their intimate knowledge of the trends in litigation to help their clients carefully avoid the common pitfalls and mistakes that routinely cause litigation in the first place. This experience also permits Brennan Burtker lawyers to offer a wide variety of risk transfer options for clients to weave into their business practices leaving them prepared when disputes arise down the road.

Brennan Burtker LLC is a premier health care and litigation law firm providing an unprecedented range of legal services to Chicago’s health care industry.  Brennan Burtker LLC is Chicago’s first full service health care law firm, providing clients everything from defense litigation to health care compliance services. Our partners are established and recognized defense litigation attorneys with an in-depth understanding of the day to day issues facing health care professionals and institutions.

The members of our firm are well versed in all areas of health care law and are frequent lecturers at medical institutions and law schools. Our established trial record and excellent results in complex medical malpractice cases are why our diversified client base includes teaching hospitals, multi-state regional hospital systems, community hospitals, physicians, physician practice groups, insurers, nursing homes, ambulatory surgery centers, clinics, and professional organizations.

The attorneys at Brennan Burtker LLC are well known for their creativity and persistence in obtaining excellent results for their clients in the early phases of litigation. They defend their clients not only in medical malpractice cases but also in commercial, regulatory and toxic tort matters.  Since its founding, the firm’s established success record has led to an expansion of its services beyond the healthcare industry to representation of construction companies, trucking firms, landowners and manufacturers in complex lawsuits seeking catastrophic damages. Our practice groups are uniquely focused on each client’s particular needs and concerns. Our partners’ excellent and cost-efficient results are the reason our client relationships have endured for decades.

Brennan Burtker LLC’s mission is to become the full-service law firm for each of our health care clients, and the litigation firm of choice for all our clients.