Judge Buser was born on January 10, 1952 in Kansas City, Missouri. He graduated from Georgetown University in 1974 with degrees in Theology and American Government. He went on to receive his J.D. degree from the University of Kansas School of Law in 1977. He is now married and has two sons.
Judge Buser began his legal career in 1977 as an assistant district attorney in Johnson County. In 1988, he became the general attorney for the Union Pacific Railroad. He then joined the law firm Shook, Hardy and Bacon in 1991 and worked in the firm's tort and pharmaceutical practice groups until his appointment to the Court of Appeals.