About
Mark Thomsen is a highly respected personal injury attorney at Gingras, Thomsen & Wachs LLP in Milwaukee, Wisconsin. With more than 35 years of legal experience, he has successfully represented victims of serious injuries, medical malpractice, civil rights violations, and wrongful death. His dedication to justice and client advocacy has earned him national recognition in personal injury law.
Mark earned his Bachelor of General Studies degree from Indiana University Northwest in 1984 before attending Marquette University Law School, where he graduated cum laude with his Juris Doctor in 1987. He was admitted to practice in Wisconsin the same year and is licensed to practice before the U.S. Supreme Court, multiple U.S. District Courts, and the U.S. Courts of Appeals for the 5th, 6th, and 7th Circuits.
Throughout his career, Mark has helped countless individuals recover compensation for injuries caused by negligence, including automobile, bike, and truck accidents, medical and legal malpractice, and nursing home abuse. He has also been a strong advocate in civil rights cases, fighting for justice in constitutional violations. His ability to approach cases strategically and aggressively has led to significant verdicts and settlements for his clients.
Mark’s dedication to legal excellence is reflected in his AV Preeminent® rating from Martindale-Hubbell, the highest peer-review rating for legal ability and ethical standards. He has been recognized by The Best Lawyers in America and America’s Top 100 Personal Injury Attorneys for his outstanding work. He is an active member of several legal organizations, including the American Association for Justice, the Wisconsin Association for Justice (WAJ), and the American Board of Trial Advocates.
Mark has served in leadership roles at WAJ, including president and chair of the Amicus Curiae Brief Committee. His commitment to legal advocacy and professional development ensures he remains at the forefront of personal injury law, providing dedicated and effective representation for his clients.
Law Office Affiliations
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Partner, Gingras, Thomsen & Wachs LLP
- Member, Milwaukee County Bar Association
- Member, American Bar Association
- Member, American Association for Justice
- Member, Wisconsin Association for Justice
- Member, American Board of Trial Advocates
Licensed State
- Wisconsin
Education
- Marquette University Law School
Juris Doctor (JD) - Indiana University Northwest
Bachelor of General Studies (BGS)
Awards & Badges







- Birth injury
- Brain injury
- Car accident
- Class action
- Litigation
- Motorcycle accident
- Social Security & Disability
- Spinal cord injury
- Trucking accident
- Wrongful death