About Our Law Practice

Located in Greater Milwaukee, Siesennop & Sullivan, LLP has represented insurance companies, corporations and licensed professionals in litigation claims for more than 40 years. In that time, we have successfully defended thousands of clients.

professionals and lawyers discussing looking at a tablet

The Experience and Commitment You Need

In a world where litigation is more common than ever, representation from an experienced and reputable defense attorney is critical. Our group of attorneys is committed to do what is necessary to protect our clients from malpractice insurance claims in both state and federal courtrooms across Wisconsin. We are not simply "litigators"" we are also proven trial lawyers.

a group of attorneys discussing in a meeting room

A Wide-Ranging Litigation Background

We defend a wide range of professionals. While we are well-known for our work representing long-term care providers and other healthcare professionals against malpractice claims, we have also successfully represented companies and individuals in the construction industry, including contractors, architects, engineers, real estate agents and brokers. Our healthcare industry clients include nursing homes, assisted living facilities, adult family homes, nurses, dentists, therapists and chiropractors. We have tried some of the most high-profile cases in Wisconsin over the past four decades. Our cases run the gamut from relatively straightforward malpractice and fraud claims to wrongful death.

Respected Trial Lawyers, Trusted Advisers

Healthcare malpractice and other insurance claims require close attention to the facts and the controlling regulations. We are renowned for thoroughly reviewing our clients' contractual, statutory and regulatory obligations to the plaintiffs, and we create our litigation strategy accordingly. Fellow attorneys and judges in the Wisconsin legal community have long respected our detailed and principled approach to insurance litigation. At the same time, we know how to reduce the emotions frequently involved in these cases, often leading to an acceptable settlement to avoid the risks of trial in the appropriate case.

We also help our clients take preventative measures to reduce the risk of a lawsuit ahead of time. We assess their regulatory and contractual obligations and collaborate with management to help them protect themselves against potential future claims.