Johnson first started competing in pageants in Florida and placed in the Top 10 at Miss Florida in 1995 and was third runner-up in the Miss Florida USA 1995 pageant. After moving to Virginia to pursue post-graduate education at Regent University she continued competing and placed in the top ten at Miss Virginia 1997.
Miss Virginia 1998
In March 1998 she won the Miss Lynchburg Festival title and went on to win the Miss Virginia 1998 title on June 29, 1998.
Miss America 1999
In September Johnson represented Virginia in the Miss America 1999 pageant, becoming the second woman representing that state to win the Miss America title. She sang "That's Life" in the talent competition. In 1997 she started wearing an insulin pump on her hip to control her illness, which she wore while competing at Miss Virginia and Miss America, the first Miss America contestant and winner to do so.
Diabetes activism
Johnson became a spokesperson for the American Diabetes Association in the 1990s and had testified in legislative hearings in Washington, D.C. prior to winning the Miss Virginia title. In 2004, her communication skills and journalism background led her to become the anchor of dLife, a weekly TV series about diabetes that aired on CNBC. Johnson has also written several books over her career: three cookbooks with Mr. Food, an independent cookbook titled, Nicole Johnson's Diabetes Recipe Makeovers, an autobiography titled Living with Diabetes, and a book for young adults titled, Young Adult Type 1 Diabetes Realities. She continues to work as a diabetes advocate and patient care expert - professionally and in a volunteer capacity. Her consulting clients have included Novo Nordisk, Animas Corporation, AmMed Direct LLC and Eli Lilly and Company. On a volunteer basis, she has served in leadership roles within the JDRF and the American Diabetes Association. Her academic credentials have most recently led her to public health work at the University of South Florida where she is the Executive Director of a program she created called Bringing Science Home. In 2010, Johnson founded Students With Diabetes, at the University of South Florida, to serve the needs of the young adult population with diabetes.
Personal life
Johnson was briefly engaged to investment banker Conn Jackson in 2000. In 2003, Johnson married journalist Scott Baker. The couple met in the mid-90s at a seminar Baker held for college students interested in news careers. Together the couple had a daughter. Johnson and Baker later divorced in 2008.
Acting
Prior to her participation in 1995 Miss Florida pageant, she appeared in a supporting part in the independent Australian film, No Worries, directed by David Elfick. In 1997, she had a minor cameo part as an extra in Neil LaBute's In the Company of Men. She later appeared in a supporting role in the independent horror film, Blood Games.