Meet the Staff

Amberly is a graduate of UTC with a Bachelor of Science degree in Psychology, a background that enriches her ability to understand and connect with patients on a personal level. Her journey into the dental field has been an unexpected yet fulfilling path. Since joining Greater Brainerd Dental over a year ago, Amberly has embraced every aspect of the profession, bringing enthusiasm, empathy, and a keen focus on patient care to the practice. Outside of her professional life, Amberly is dedicated to maintaining a balanced and vibrant lifestyle. An avid fan of Pilates and pickleball, she thrives on activities that keep her both physically fit and mentally engaged.

Hello! I’m Chad, I’m a dental hygienist here at Greater Brainerd Dental. I completed my associate’s degree in dental hygiene at Chattanooga State. I’m proud to say that I graduated at the top of my class with a 4.0 GPA, and I was the recipient of several awards including the TN Dental Association’s “Most Outstanding Student” award, as selected by my peers. I’m originally from middle TN but I’ve lived in Chattanooga since 2015, and I found my passion in dentistry in my late 20’s and decided to go back to school and pursue a career in dental hygiene.

I am an experienced Expanded Functions Dental Assistant, dedicated to providing top-notch care and contributing to patient well-being. Originally from Whitwell, Tennessee, I graduated from Whitwell High School and pursued my passion for dentistry at Miller-Motte Technical College, earning my Dental Assistant certification in 2011. To further enhance my skills, I attended the University of Tennessee Health Science Center in Memphis, where I obtained certifications in restorative and prosthetic dentistry. These advanced qualifications allow me to assist in delivering comprehensive dental treatments with precision and care. When I’m not at work, I enjoy spending time with my husband, John, my twins, Tyson and Summer, and our lovable cat, Gus.

I’m Brittnie Lancaster and I work at the front as the hygiene scheduler. I have worked in administration for the past 5 years. I’m the mother of 4 beautiful girls, and I also enjoy shopping, reading a good book, and Grey’s Anatomy!

Welcome! I’m Dr. Robert J. Clark, I’m originally from Milan, a small town in West Tennessee. I attended undergraduate school at Middle Tennessee State University. I received my Dentistry degree from the University of Tennessee at Memphis. I finished Dental School in 1974 and started my own private practice in 1975. My practice is geared towards Family Dental Care with a strong emphasis on prevention. I was elected to serve as the 2024-2025 President of the Chattanooga Area Dental Society, and I am truly honored to have this opportunity. I’ve been married to my wife Robbie Clark for many years, and we have four children and three grandchildren. Thank you for taking the time to get to know me, and I look forward to the opportunity to serve you and your family.

Irina Dzhuga, EFDA, has been a dental assistant since 1999. She is originally from Belarus, a country just outside of Russia. She moved to the States in 1997. She enjoys working with patients to help them achieve his/her beautiful smile. She got her prosthetics function certification in 2017 and restorative function certification in 2020 at the University of Tennesee in Memphis. Outside of work she enjoys spending time with her family, as well as crafting and being outdoors.

Leah Brumley is our Office Manager. She joined the Greater Brainerd Dental Team in August of 2010 but has been working in the dental field for over 15 years. She graduated Magna Cum Laude from The University of Tennessee, Chattanooga in 2002 with a Bachelor of Science degree. She loves meeting new people and enjoys working individually with each patient so that he/she can get the beautiful smile they deserve.

Sonya Sims is an Expanded Functions Dental Hygenius here at GBD. She’s been in practice here for over twenty years with this office. She is currently President of the Chattanooga Area Dental Hygienist Association. She is on the Chattanooga State Advisory Council, as well as an adjunct professor. Highly trained in Cosmetic Dentistry and Periodontal Therapy, she looks forward to helping our clients maintain optimal dental health. She is also certified in local anesthesia and Nitrous Oxide for patient comfort.