A part of Ole Miss for three decades, Johnson earned the title of Deputy Athletics Director for Sports and Administration in February 2018. 

Johnson is entering her 22nd year as the Senior Woman Administrator and 31st overall in the department. Her oversight includes human resources, student-athlete development, gender equity and policy-management for the department.  She serves as the sport administrator for nine Ole Miss programs, including women’s basketball, rifle, soccer, softball, volleyball and men’s and women’s golf and tennis.

As a sport administrator working with up to 16 of the department's 18 programs, Johnson's teams combined for 17 SEC Western Division championships and nine overall regular-season or tournament titles. Among the countless highlights, the 2005 Rebel men's tennis squad advanced to the NCAA Final Four; the women's basketball team reached the 2007 Elite Eight; Soccer played in the Sweet Sixteen in 2015; Softball earned Super Regional berths in both 2017 and 2019; Volleyball captured the NIVC title in 2017; Women's Golf was crowned SEC champions for the first time in 2019 and Rifle achieved its first conference title this year.

Johnson's tenure includes multiple national champions. In 2009, Devin Britton became the youngest player ever, and just the third freshman, to win the NCAA men's tennis singles title. Another tennis national champion emerged nine years later, as Arianne Hartono claimed the first title for the Ole MIss women's program. A Rebel men's golfer also took home an NCAA championship under Johnson's administration with Braden Thornberry's remarkable performance for the 2017 crown.

Academically, Johnson's programs excelled in the classroom as well, putting up high graduation rates, multiple Academic All-America honors and Taylor Medalists, as well as the first athlete to be inducted into the school's Phi Beta Kappa Honor Society chapter.

In addition, Johnson has overseen human resources, student-athlete development, gender equity and policy-management for Ole Miss Athletics. She also represented the department on countless campus, conference and NCAA committees, including serving twice on the NCAA Softball Committee. 

Johnson was also part of the Ole Miss capital facilities team that helped coordinate, plan and design many important athletics venues on campus, including the Tuohy Basketball Center, Gillom Athletics Performance Center, Galtney Indoor Tennis Center, Ole Miss Track & Field Complex, Lamar Center (Rifle), Tosh Family Short Course, FedEx Academic Support Center and multiple renovations. 

In her time as a member of the Ole Miss sports medicine staff, Johnson worked with all Rebel teams but primarily with football and women's basketball. In 1997, she became the first female head athletic trainer overseeing all sports in the Southeastern Conference.

The Pittsburgh, Pennsylvania, native is a 1988 graduate of East Carolina University and a 1990 graduate of Ole Miss with a master's degree in education. In 2018, Johnson earned her doctorate in higher education from Ole Miss. She is an Ole Miss Alumni  lifetime member plus M-Club Alumni member. She is married to Tal Johnson and the couple has two daughters, Alexandria and Samantha.