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About Us

Thomas W. Fleckenstein, Esquire

I was born and raised in Columbia. I graduated Columbia High in 2002. I have been a practicing attorney since 2009 and opened my own law office in 2012 before becoming a partner in Mountz, Krieser and Fleckenstein, Attorneys at Law in 2024.

I have a B.S. from Shippensburg University, 06, and a J.D. from Penn State University (09). I am an active member of the Columbia Lions Club and the Columbia Economic Development Committee. I enjoy coaching my three kids in football, baseball and basketball.

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Karl Kreiser, Esquire

A Columbia boy at heart, I graduated from Columbia High School in 1975. I then graduated from the University of Delaware in 1979 and the University of Dayton School of Law in 1982. My current focus is on estate planning and estates, but I practiced all types of family and business law in my 37 year law career, which provides me the experience to help my clients plan their legacy.

I live in my hometown of Columbia with my wife of 34 years, Donna L. (Shader) Kreiser. We enjoy spending time with our two sons, their spouses, and our 3 grandchildren. I have served as Deacon at Community Bible Church, and currently lead one of our Men’s Groups. I have lived in Columbia all my life and also enjoyed my 28 year career coaching boys and girls basketball at Columbia High School.

Experienced, dedicated, and committed to assisting you and your family with their estate planning needs.



I treat every client as if they were my family.


“Every project worth doing, is worth doing well”


Communication is very important to me, I strive to keep communication honest, authentic, and clear

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