At Quest Orthodontics, our friendly and accommodating team of orthodontic professionals in Sandy Springs, Georgia, is committed to providing each and every patient with the quality service they deserve. Our team takes the time to talk with patients and truly get to know them. We are also incredibly experienced and helpful with insurance. We want your experience with us to be as rewarding and comfortable as possible, and we encourage you to contact us today to schedule an appointment with our talented orthodontist, Dr. Arjun Patel!

Administrative Team

NancyNancy Mullennix, Financial Coordinator
My name is Nancy, and I am the Financial Coordinator here at Quest Orthodontics. I am thankful to be a part of the amazing team we have built here at Quest Orthodontics. We have the absolute best patients. I am a mom to four amazing young adults and love spending time with them. I am also a HUGE Georgia football fan!! GO DAWGS!!!


Erica Erica Johnson, Treatment Coordinator
I am the Treatment Coordinator here at Quest Orthodontics. I have been in the orthodontic field for 10 years and am honored to have the pleasure working with the Quest staff and our beloved patients. I am a proud single mother of 2 kids! My kids are 5lbs Yorkshire Terriers, don’t judge me…lol!

I enjoy traveling international and domestic travel, creating exotic craft cocktails, experiencing new foods and feeding the homeless.


CalistaCalista Harvey, Communications Coordinator
Hey y’all! My name is Calista and I’m the Communications Coordinator here at Quest Orthodontics. I started my journey in the dental field four years ago but found my love for orthodontics in July of 2019. My husband Eddie, who is a history teacher and head coach at Cedartown High School, myself and our 3 amazing kids: Madison Faith, 19, Kaelen Jacob, 13, and Macy June Grace, eight moved here five years ago from a small town in east Tennessee called Maryville. It’s located in the foothills of the Great Smokey Mountains. When not working, my time is spent with my family attending church, volunteering in the community, traveling back home to Tennessee as well as refurbishing old furniture (one of my biggest passions, now). I’m also a HUGE diehard Tennessee VOLS fan. I love attending the football games and tailgating with my parents. I am blessed to work with such an AMAZING team as well as a wonderfully, talented doctor who truly cares for his patients and staff. I have found my “forever home” here at Quest Orthodontics.


Clinical Team

KristinKristin Tinsley, Clinical Assistant
Hi, my name is Kristin! I joined the Quest Orthodontics team in August 2017 and I couldn’t be happier. I love assisting Dr. Patel and watching our patients transition into a healthy, beautiful smile! In my free time I enjoy not only watching but playing soccer. I also have an amazing greyhound named Carm!

LauraLaura Manzanarez, Sterilization & Lab Technician
My name is Laura Manzanarez and I am the Quest Orthodontics Sterilization and Lab Tech. I joined Quest in January 2020 and I can’t wait to help be in the process of helping you feel confident about your smile! A little bit about myself is that I love to go to concerts, play volleyball in the winter and go out dancing with my friends.


KierraKierra James, Clinical Assistant
Hi! My name is Kierra. I am so excited to be a part of the Quest Orthodontics team. I joined the team in June 2020 as a clinical assistant. I love watching the patient’s confidence grown as their smile grows. I have one amazing little boy that is 7 years old. He keeps me outside on adventures, and loving life. My family and I are HUGE Atlanta United fans. You can usually find us waving a flag and chanting our hearts out at games and tailgates. We love hiking and playing all sports on our time off.