Our Team

John Masengill, DDS

Dr. John studied Chemistry at the University of Tennessee Chattanooga, gaining his Bachelor of Arts in 2003. Upon graduation, he attended the University of Tennessee College of Dentistry and earned his DDS degree in 2007. Since he began practicing dentistry, Dr. John has attended many continuing education courses, ensuring that his patients receive the most comprehensive and advanced dental care possible. He is a member of the American Dental Association, Tennessee Dental Association, and the Second District Dental Society. Dr. John is from Cleveland, Tennessee and is married to his wife Elise. They have a son, Davis and daughter, Cate. He enjoys spending time with his family, the outdoors, and sports.

Brittany Thornhill, RDH

Hygienists have the dubious task of being thorough yet gentle, and Brittany masters that task effortlessly. Although Brittany recently joined our practice, she has quickly become a integral part of the team. She brings many years of dental experience, combined with a love of people and a passion for dentistry. These qualities make her a valuable asset to our team. She prides herself on fostering lasting relationships with patients, and she goes the extra mile to make sure every patient feels as comfortable as possible during their appointments with her. In her time away from the office, she enjoys being active with her husband and two children.

Casey Stooksbury, RDH

Casey was born and raised in East Tennessee. She graduated from East Tennessee State University and has been practicing dental hygiene for more than fifteen years. You will find that she is compassionate, able to put her patients at ease and ensures they have a positive dental experience. Her favorite part of her job is getting to know her patients and developing long term relationships them. Casey and her husband Brad have three children and two of the cutest pups. In her free time she likes to cheer on her kids at their sports events, run and read.

Kelli Booker, RDA

When you first walk through the doorway at our practice, you'll most likely be greeted with Kelli's warm smile. She wears many hats for our practice so you may see her anywhere in the office, whether it be at the front desk or chairside assisting with the doctor. She really goes the extra mile for our patients to help coordinate treatment and answer questions about insurance benefits. She has been with the practice since June 2015. Kelli lives in Fountain City with her husband, Ben. They have a mini goldendoodle named Dudley. In Kelli's free time she enjoys snowboarding, spending time with her family, and being outdoors.

Kimberly Bailey, RDA

In addition to being a registered dental assistant, Kimberly also serves the roll of receptionist at Rocky Hill Dental. When you begin your treatment, Kimberly will be by your side each step of the way. Whether it's answering questions or reassuring you, you can feel confident knowing you have an experienced assistant by your side. Kimberly has been with our practice since 2018 and enjoys the teamwork at Rocky Hill Dental and is dedicated to patient care.