Skip to Content

Sandberg Phoenix Welcomes Cassie Lewandowski and Untress Quinn

New Counsels in the Health Law Practice Group bring even more depth to the bench of experienced litigators serving healthcare industry clients throughout Missouri and Illinois.

As the firm continues to grow the number of highly skilled legal professionals in the pursuit of our clients’ goals, Sandberg Phoenix is proud to announce the addition of Counsels Cassie Lewandowski and Untress Quinn. As members of the Health Law practice group, both attorneys will provide guidance and litigation defense to clients in across the health care industry.

An experienced litigator, Cassie Lewandowski focuses her legal career on medical malpractice litigation, defending nurses, doctors, hospitals, long-term care facilities, and other providers in the healthcare industry. She has also advised clients on healthcare regulatory matters and represented clients before various state administrative boards. In addition to her healthcare practice, Cassie has significant experience in business and commercial litigation, as well as product liability and toxic tort.

Untress Quinn has significant experience in civil litigation, including medical malpractice litigation. He has defended multiple catastrophic and complex litigation cases involving civil rights, labor and employment, product liability and medical malpractice cases which included neurologic, obstetric, neonatal, pediatric, cardio-thoracic and other traumatic injuries. As a Registered Nurse with experience in direct patient care, Untress understands the complex issues at play in medical malpractice litigation, which helps him better guide his clients through difficult legal issues.

“Our health law and medical malpractice defense group has a long history of providing unparalleled service to our clients,” said Sandberg Phoenix Managing Partner John Sandberg, “Both Cassie and Untress are fabulous attorneys and we’re excited they’ve joined us to continue providing that service moving forward.”

Each attorney has been recognized for their outstanding legal abilities. Cassie was recognized by Missouri Lawyers Weekly as an “Up & Coming Lawyer” and “Law Firm Leader” in 2015 and was named to the Missouri Bar Pro Bono Wall of Fame in 2012. Untress was selected as The National Black Lawyers Top 100 for 2015, and has also received the NAACP’s 54th Freedom Fund Awards for excellence in law. He was also recognized as a “Leading Lawyer” in the categories of Employment Law: Management; Medical Malpractice Defense Law and Personal Injury Defense Law: General.

Cassie and Untress join a team of more than 100 attorneys in seven offices throughout the Midwest whose broad depth of knowledge and close attention to detail ensure that all clients receive extraordinary client service, backed by a unique service guarantee.

While Cassie will work primarily from the firm’s St. Louis office, Untress will split his time between the firm’s St. Louis, O’Fallon and Edwardsville offices.

Related Attorneys

See All Attorneys