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Mark L. Thomsen

Attorney in Milwaukee

Licensed in Wisconsin since: 1987

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Mark L. Thomsen

Attorney

Personal Injury Auto Accidents Bike Accidents Wrongful Death Defective Products Nursing Home Neglect Civil Rights Class Action Truck Accidents

Meet Attorney

Mark L. Thomsen

With over 35 years of dedicated experience, Mark L. Thomsen is a venerable personal injury attorney at Gingras, Thomsen & Wachs LLP in Milwaukee, Wisconsin. He channels his extensive background, which includes nearly a decade as a blue-collar worker, into a deep understanding and empathy for his clients. Mr. Thomsen’s practice is devoted to helping victims of devastating injuries, tackling cases that range from automobile and truck accidents to medical malpractice and civil rights violations. He balances a methodical and aggressive approach to ensure the highest quality of representation, always striving to secure the just compensation his clients deserve.

Mark is a member of the American Board of Trial Advocates (ABOTA), a national organization for experienced civil trial lawyers dedicated to advancing the civil jury trial and elevating the standards of integrity, civility, and professionalism in the field.

About Milwaukee Attorney Mark L. Thomsen

I was born in Blair, Nebraska, during the winter of 1954. The son of missionaries, I grew up in Nigeria, Africa, until age 12, an upbringing that shaped my understanding of justice and ignited a lifelong commitment to equal justice and civil rights. I dropped out of high school at 17. When the Inland Steel coke plant department in East Chicago, Indiana, shut down in 1984, I moved to Milwaukee, Wisconsin, with my wife, Grace, and our daughter, Sonja. I proudly worked as a full-time steelworker for nearly eight years, was elected as a Local 1010 USWA union representative, and the union helped pay for college classes at Indiana University Northwest. I graduated in 1984. I started law school at Marquette University and, after graduating cum laude in 1987, served as law clerk to the Hon. John L. Coffey, Circuit Judge for the U.S. Court of Appeals for the Seventh Circuit.

My 39 years as a practicing lawyer, in both state and federal courts, have been, and remain, primarily devoted to personal injury related claims, including truck and car crashes, medical malpractice and nursing home abuse, legal malpractice claims, and civil rights cases. Vigorously representing my clients helps create and design the legal infrastructure, the “Matrix,” we live in to expand justice and protect people and their individual rights to life, liberty, and the pursuit of happiness. During my tenure, I have successfully obtained millions of dollars for the individuals, families, and clients I have been honored to represent.

I am a member of the American Association for Justice, past-president (2009) and board of directors member of the Wisconsin Association for Justice (WAJ), member of the WAJ Amicus Committee, Wisconsin Chapter member of the American Board of Trial Advocates (ABOTA) (2019 – present), and a member of the American Bar Association, Milwaukee Bar Association, and Eastern District of Wisconsin Bar Association. I am recognized by Super Lawyers (2005 – present), a distinction awarded to a handful of outstanding attorneys; Best Lawyers (2009 – present), recognized for excellence in legal practice; and Martindale-Hubbell, AV rated, the highest rating for professional ethics and legal ability. I was honored as the 2022 WAJ Robert L. Habush Trial Lawyer of the Year, the 2023 Marquette University Law School Alumnus of the Year, and the 2023 Milwaukee Bar Association Lawyer of the Year.

In addition to my involvement in the legal community, I served on the board of directors for the Southeast Wisconsin Professional Baseball Park District (2004–2022). I serve as a commissioner on the Wisconsin Elections Commission (2016 – present), the agency charged with maintaining the integrity of voting in state and federal elections in Wisconsin, serving as the agency’s first chairperson from 2016 to 2017. I am a proud board member and president of the Ascension Lutheran Church Endowment.

Grace, my partner in life and love, and I have been married for 49 years. Our daughter, Sonja, is an artist, researcher, educator, and mother, married to Cain, a wonderful husband, father, and an excellent immigration lawyer. Our son, Jens Theodore Thomsen, was born on December 4, 1987, and died on October 31, 2015. Grace and I have been blessed with five beautiful grandchildren — Orjan, Sienna, Aiden, Michael, and Liv.

Education

J.D., Marquette University Law School, cum laude, 1987
B.G.S., Indiana University Northwest, 1984
Luther College, 1974-1976
Loras College, 1972-1974

Bar Admission

Wisconsin State Bar, 1987
U.S. District Court for the Eastern District of Wisconsin
U.S. District Court for the Western District of Wisconsin
U.S. Court of Appeals, Fifth Circuit
U.S. Court of Appeals, Sixth Circuit
U.S. Court of Appeals, Seventh Circuit
United States Supreme Court

Professional Associations and Memberships

Eastern District of Wisconsin Bar Association
Milwaukee County Bar Association
Waukesha County Bar Association
State Bar of Wisconsin
American Bar Association
American Association for Justice
Wisconsin Association for Justice (WAJ) – Member of the Amicus Committee
Commissioner on the Wisconsin Elections Commission, the state agency charged with maintaining the integrity of voting in state and federal elections in Wisconsin, and served as its first Chairperson
President of the Ascension Lutheran Church Endowment Board
American Board of Trial Advocates (ABOTA), 2019-Present

Honors and Awards

Milwaukee Bar Association Lawyer of the Year, 2023
Wisconsin Association for Justice Robert L Habush Trial Lawyer of the Year, 2022
Wisconsin Super Lawyers, 2005-Present
Best Lawyers in America, 2009-Present
Martindale-Hubbell, AV Rated
Speaker at Team Up for Change – Social Justice Summit Hosted by the Milwaukee Bucks and Sacramento Kings

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Helping Clients Achieve Big Results

The Mike Tyson of attorneys!

“I appreciate how hard Mark Thomsen fought for me and my family. In my experience with watching Mark in action he’s like ‘The Mike Tyson of attorneys’!”

— Nicole A.Google Review

I cannot thank Mark Thomsen enough

“My husbands life was taken in a tragic car accident and I cannot thank Mark Thomsen enough, not only for his professionalism, but also for his empathy and kindness throughout his successful representation of our family. His patience and accommodation of our needs while we grieved, will always stand out in my mind. I have every confidence he will continue to bring positive results to many families who have lost their loved ones in a wrongful death. Thank you GTW”

— Karen S.Google Review

He is a true professional and superb attorney

“I cannot thank Mark Thomsen enough for how he stood up for my daughter in her civil rights case. He is a true professional and superb attorney; but, more than that, is a good human being who treated my daughter, and myself, with dignity and respect through a very trying time. There are not many attorneys who actually “talk the talk and walk the walk” but he is definitely one of them.”

— Jackie H.Google Review

Absolutely stellar service from start to finish!

“Absolutely stellar service from start to finish! I cannot thank Mark Thomsen and their team enough for their exceptional expertise and dedication in handling my malpractice case. They navigated every twist and turn with precision, keeping me informed and reassured throughout the process. Their strategic approach and thorough understanding of the law resulted in a successful outcome that exceeded my expectations. I highly recommend Mark Thomsen to anyone seeking a knowledgeable and compassionate advocate in times of legal need. Thank you for everything!”

— Denver C.Google Review

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