Meet Our Doctors

Doug A. Singleton, D.D.S., M.S.

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Dr. Doug A. Singleton is an orthodontist in Kennesaw, GA, who specializes in providing orthodontic treatment for patients of all ages.

He obtained his Doctor of Dental Surgery degree from the University of Tennessee and a certification in orthodontics from Baylor College of Dentistry.

Dr. Singleton has been in private practice since 2003. He is a published author and a public lecturer. He maintains professional memberships with the American Dental Association, American Association of Orthodontists, Georgia

Association of Orthodontists and the Southern Association of Orthodontists.

Away from the office, Dr. Singleton enjoys playing golf, running and water skiing with his kids. He is married to his high school sweetheart, Becky. They have three children: Cole, Micaela and Athen.

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Candace Cronan, D.M.D, M.S.

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Dr. Candace Cronan grew up in Covington, GA and married her high school sweetheart, Josh, in 2005. They have three daughters and are expecting their fourth child in December.

Dr. Cronan went to the University of Georgia for her Bachelor’s Degree and then moved to Birmingham, AL to pursue her dental education. She obtained her Doctor of Dental Medicine and Master’s Degree in Orthodontics from the University of Alabama-Birmingham.

She is currently a member of the American Dental Association, the American Association of Orthodontists, and the Southern Association of Orthodontics.

Outside of work, she enjoys giving back to her community by participating in community events through Vaughan Elementary School and Macland Baptist Church. She also enjoys swimming, going to amusement parks, and spending time with her family.

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Christian Johnson, D.D.S., M.S.

Dr. Christian JohnsonWe are privileged to have Dr Christian Johnson join our OrthoZone Team in our Hiram location!

Dr. Johnson grew up in Cobb County and graduated from North Cobb High School. She is excited to be returning to northwest Georgia where her family still resides.

She earned a Bachelor of Arts in Exercise Sport Science from the University of North Carolina, Chapel Hill (UNC) and while there, competed as a varsity track and field athlete in the heptathlon and triple jump. She remained at UNC to obtain her Doctor of Dental Surgery degree and following dental school, completed a two-year residency in Pediatric Dentistry at the Ohio State University. Dr. Johnson has successfully completed the requirements to achieve diplomate status with the American Board of Pediatric Dentistry. After a year in private practice as a pediatric dentist, Dr. Johnson returned to UNC to pursue training in Orthodontics.

Dr. Johnson is a member of the American Dental Association, the American Association of Orthodontists, and the American Academy of Pediatric Dentistry.

In her spare time, Dr. Johnson enjoys spending time with family and friends, volunteering, and outdoor activities.