Mackall, Crounse & Moore, PLC has joined Dewitt Ross & Stevens S.C.

The newly formed DeWitt Mackall Crounse & Moore S.C. will provide clients with enhanced legal services
and efficiencies as well as access to more than 100 attorneys practicing in nearly 30 areas of
law in Wisconsin and Minnesota.

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John F. Thomas

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Lynn Geistfeld

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John concentrates his practice in the area of Civil Litigation with an emphasis on construction litigation and products liability litigation.  He also has experience with asbestos defense and other personal injury and insurance defense matters.


John represents a large variety of clients, including large construction and pest-control companies, international manufacturers, and other corporations and insurance companies.

Notable Representations

  • Secured a Rule 12 dismissal of commercial property damage lawsuit against a national pest control vendor in the Northern District of Illinois based on federal venue statutes.
  • Successfully pursued defense and indemnity claims for general contractor against subs to obtain defense costs and settlement in construction defect case with damage claim exceeding $20 million.
  • Successfully defended negligence action brought against insurance agency both at district court level and on appeal before the Supreme Court of North Dakota.
  • Successfully litigated and tried to verdict a creditor’s nondischargeability fraud action against former investment advisor in Bankruptcy Court adversary proceeding.

Articles and Presentations​ 

  • “Professional Liability Law,” Engineering Law and Ethics, Halfmoon Education, May 10, 2018.
  • "Keeping the Beetles Out of Our Food Products: A FIFRA Preemption Update," Minnesota Defense, Fall 2017
  • “The Trial Lawyer’s Guide to Mandatory Arbitration Clauses,” Minnesota Defense Lawyers Association, May 24, 2017
  • “The Law of Attraction: Marketing and Attorney Development Tops for DRI’s Young Lawyers,” Defense Research Institute’s The Whisper, September 2016
  • “A Look at Implied Indemnification Under Minnesota Limited Liability Company Act,” Attorney at Law Magazine, January 2014

Our Locations

We are currently limiting the amount of outside visitors to the firm.  

Please work directly with your attorney who will coordinate any onsite visits to ensure the safety of our clients and colleagues.


2 East Mifflin Street, Suite 600
Madison, WI 53703
(608) 255-8891
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Greater Milwaukee

13845 Bishop’s Drive, Suite 300
Brookfield, WI 53005
(262) 754-2840
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2100 AT&T Tower,
901 Marquette Avenue
Minneapolis, MN 55402
(612) 305-1400
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Get to know us

DeWitt LLP is one of the ten largest law firms based in Wisconsin, with an additional presence in Minnesota. It has nearly 140 attorneys practicing in Madison, Metropolitan Milwaukee and Minneapolis in over 30 legal practice areas, and has the experience to service clients of all scopes and sizes.

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We are an active and proud member of Lexwork International, an association of mid-sized independent law firms in major cities located throughout the Americas, Europe and Asia and an active member of SCG Legal, an association of more than 140 independent law firms serving businesses in all 50 state capitals and major commercial centers around the world.


Best Lawyers 2013 – 2020
Super Lawyers 2020
Compass Award 2012
Top 100 Lawyers: National Trial Lawyers Association


While we would like to hear from you, we cannot represent you until we know that doing so will not create a conflict of interest. Accordingly, please do not send us any information about any matter that may involve you until you receive a written statement from us that we represent you (an “engagement letter”). You will not be a client of the firm until you receive such an engagement letter.

The best way for you to initiate a possible representation is to call DeWitt LLP at 608-255-8891. We will make every effort to put you in touch with a lawyer suited to handle your matter. When you receive an engagement letter from one of our lawyers, you will be our client and we may exchange information freely.

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