Our Attorneys

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Douglas W. Kammer

Managing Partner

As owner and senior partner of Kammer Law Office, S.C., Mr. Kammer has served the Portage and surrounding area for over 40 years in the legal profession.

Mr. Kammer did his undergraduate work at Princeton University, Ball State University and the University of Wisconsin, graduating in 1968 with a Bachelor of Arts degree in Ethical Philosophy, but with concentration also in Political Science and Mathematics. He attended the University of Wisconsin Law School from 1967 through 1970 and received his Juris Doctorate.

He was elected President of the State Bar of Wisconsin in 2009 and served as President until July of 2010.


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Katherine J. Kruger


As the new associate at Kammer Law Office, S.C., Ms. Kruger focuses her practice in the area of family law. Attorney Kruger is a graduate of Portage High School, Class of 1993. She earned her Bachelor of Arts degree in politics and philosophy from Cornell College in 1997. She graduated from the University of Wisconsin Law School in 2000.

Prior to joining Kammer & Greiber, she gained 10 years of experience working in a general practice firm in Random Lake (Sheboygan County) with a caseload that took her to Sheboygan, Ozaukee, Washington, and Fond du Lac Counties. She was principally practicing family law, criminal defense, bankruptcy, and performing real estate title searches.