Stefan entered his 28th year of practicing law as of September 2025. He has represented hundreds of clients, ranging from landlord-tenant evictions to ERISA class action cases. Named as one of 18 General Litigation “Super Lawyers” in the Mountain States since 2022, his experience speaks for itself. Passionate about the law and serving satisfied clients, Stefan believes that professionalism and diligence are the hallmark of this Montana law firm. Since founding Wall, McLean & Gallagher’s predecessor with the Honorable Michael F. McMahon, now Judge of the First Judicial District Court, Stefan has adhered to one simple commitment: the client comes first. This client-centered approach has been adopted by the lawyers and staff at Wall, McLean & Gallagher, PLLC. As a result, Stefan looks for the best client benefit, whether in a legal transaction, settlement, or trial.
Admitted to practice in the state and federal courts of Montana and Nebraska, as well as the 9th Circuit Court of Appeals, Stefan has tried cases in the state and federal courts of both Montana and Nebraska.
Stefan graduated from the University of Nebraska School of Law with High Distinction in 1997 and was a member of the Law Review, publishing Res Ipsa Loquitur and the Great Cattle Caper: Inferred Negligence in Escaped Livestock-Automobile Collisions After Roberts v. Weber & Sons, Co., 248 Neb. 243, 533 N.W.2d 664 (1995), 75 Neb. L. Rev. 308 (1997). He is a Martindale-Hubbell AV Preeminent-rated lawyer, which signifies the highest possible rating in both Legal Ability and Ethical Standards, and was named a Super Lawyers “Rising Star” in 2009.
Stefan graduated from Truman State University (Missouri) in 1992, Magna Cum Laude, where he was a four-year starter on the men’s soccer team and garnered accolades as an NAASC All-American and a GTE CoSida Academic All-American.
A native Nebraskan who has practiced in small communities and rural counties since 1997, Stefan began his career at a law firm in Chadron, Nebraska, just out of law school. After relocating to Helena in 2001, he practiced with the Crowley Fleck firm and then with Hughes, Kellner & Sullivan before founding McMahon, Wall & Hubley with partners Mike McMahon and Bernie Hubley. The election of Judge McMahon and the retirement of Mr. Hubley created the opportunity to join with Anaconda natives Mike McLean and Pat Gallagher to form Wall, McLean & Gallagher, PLLC.
Stefan is married to Heidi Tussing, and, with their three children, enjoys all that Montana has to offer across the seasons – skiing, fishing, hunting, mountain biking, hiking, rafting, and backpacking. In addition, Stefan is the head boys’ soccer coach at Capital High School, where he has mentored young men since 2015, and has served as a certified Hunter Education instructor for Fish, Wildlife and Parks.
Stefan graduated from the University of Nebraska School of Law with High Distinction in 1997, and was a member of the Law Review, publishing “Res Ipsa Loquitur and the Great Cattle Caper: Inferred Negligence in Escaped Livestock-Automobile Collisions After Roberts v. Weber & Sons, Co., 248 Neb. 243, 533 N.W.2d 664 (1995)”, 75 Neb. Law Rev. 308 (1997). He is a Martindale-Hubbell AV Preeminent rated lawyer which signifies the highest possible rating in both Legal Ability and Ethical Standards, and was named a Super Lawyers “Rising Star” in 2009.
