Kauffman's professional baseball career began in 1911 with the minor league York White Roses of the Class-BTri-State League. His team, which represented York, Pennsylvania, featured future and former major league players Ned Crompton, Bill Culp, Rankin Johnson, Sr., Red Oldham, and Joe Wagner. In June, the Gazette and Bulletin of Williamsport, Pennsylvania wrote that Kauffman was playing "a fine game at first" as a member of the White Roses. On the season, he batted.262 with 98 hits, nine doubles, nine triples, and four home runs in 106 games played. In 1912, Kauffman returned to the Class-B York White Roses. He batted.290 with 119 hits in 110 games played that season. On January 17, 1913, Kauffman was sold for an undisclosed amount by the York White Roses to the Elmira Colonels of the Class-B New York State League. The 1913 Colonels, who represented Elmira, New York, featured future and former major league players Cad Coles, George Hunter, Charlie Loudenslager, and Lew Ritter. Kauffman batted.278 with 145 hits in 140 games played on the season. he returned to the Elmira club in 1914. He batted.329 with 142 hits in 123 games played. He led the league in batting average. After the season, it was reported that Kauffman was being pursued by numerous major league teams. Kauffman joined the St. Louis Browns of the American League in September 1914. He made his major league debut on September 17. Kauffman played seven games with the Browns that season. In those games, he batted.267 with one run scored, four hits, one double, and two runs batted in. He re-signed with the Browns in 1915. In 37 games played, he batted.258 with nine runs scored, 32 hits, eight doubles, two triples, and 14 runs batted in. His last major league appearance was on June 12 of that season. On June 19, 1915, Kauffman was sold by the St. Louis Browns to the minor league Atlanta Crackers of the Class-ASouthern Association. Immediately after being sold, he signed a contract with the Atlanta club, and appeared in his first game with the team. On the season with the Crackers, he batted.260 with 83 hits, 10 doubles, seven triples, and two home runs in 94 games played. In 1916, Kauffman signed with the Nashville Volunteers, who were also members of the Class-A Southern League. He batted.255 with 111 hits, 19 doubles, and six triples in 121 games played that year. Kauffman re-joined the Nashville Volunteers in 1917. That season, he batted.281 with 163 hits, 34 doubles, nine triples, and three home runs in 153 games played. He finished second in the league in doubles. During his third season with the Volunteers in 1918, Kauffman batted.290 with 54 hits, 10 doubles, and two triples in 50 games played. Kauffman spent his fourth and final season with the Nashville club in 1919. On the season, he batted.269 with 14 doubles, two triples, and five home runs in 64 games played. In 1920, Kauffman served as a player-manager for the Atlanta Crackers of the Class-A Southern League. He batted.273 with 130 hits, 19 doubles, nine triples, and two home runs in 132 games played that year. Kauffman re-signed with the Crackers in 1921. He did not serve as the team's manager that season. He batted.281 with 128 hits, 19 doubles, 14 triples, and five home runs in 134 games played. It would prove to be his last season in professional baseball.
Later life
By 1942, Kauffman self-employed and living with his wife in Lewisburg, Pennsylvania. He died on April 16, 1948 at the age of 59 in Mifflinburg, Pennsylvania. He was buried at Lewisburg City Cemetery in Lewisburg.