Meet The Team

Welcome To Our Marble Falls, TX Pediatric Office

Pediatric Dentist Located In Marble Falls, TX

You work hard every day to keep your child smiling and we want to be a part of that mission! As your local Marble Falls dentists, our team is proud to offer comprehensive dental services that are convenient, comfortable and cost-effective. Our goal is to help your child maintain a happy, healthy smile for years to come.

Rodrigo F. Viecilli, DDS, PhD

Rodrigo Viecilli, DDS, PhD trained as an undergraduate in Aerospace Engineering, also known as Rocket Science! After dental school he completed his orthodontic training, along with a PhD in Oral Biology (Biomechanics) from Indiana University. He is one of two orthodontists from Indiana to win the prestigious Milo Hellman Award, the highest North American research honor in Orthodontics. He is the only one to ever complete all American Board of Orthodontics patient case requirements within two years, during his Residency. He was approved as a prospective member of the Angle Society of Orthodontists, Midwest Component and has been board certified since 2011. Dr. Viecilli is the inventor of the Smartarch, the most sophisticated orthodontic wire ever designed, currently commercialized by the largest orthodontic company in the world. He loves the challenge of treating patients of all ages and has extensive experience with Invisalign and surgically assisted accelerated Orthodontics and Lingual Orthodontics. He strives to provide the best aesthetic outcome for his patients utilizing the most efficient and scientific treatment possible. Dr. Viecilli enjoys cooking, music, weightlifting, traveling and reading philosophy. He was also a ranked chess player for many years in Brazil, winning several local championships.

Traci Simons, DDS, MS

Traci T. Simons, DDS, MS, was born in the Black Hills of South Dakota, but has lived most of her life as a Texan. She spent most of her childhood in El Paso and stayed there to attend the University of Texas at El Paso, majoring in biology. After receiving a Bachelor’s of Science from UTEP, she continued her education and accepted admission at Baylor College of Dentistry where she received her Doctor of Dental Surgery degree. During her time in dental school, Dr. Traci held leadership roles and was an active participant in outreach projects. She knew early on that she had a passion for children and wanted to specialize in pediatric dentistry. She went on to complete her two-year pediatric residency through Baylor College of Dentistry/Texas A&M University System in Dallas. The program included training at Texas Scottish Rite Hospital and Children’s Medical Center of Dallas, where she focused on the needs of special needs patients and those medically compromised. She completed her Masters of Science in Pediatric Dentistry in 1999 and moved to Austin. After a few years in private practice, she was able to volunteer with Faith in Practice to Guatemala to treat underserved children in their community. She has continued to volunteer throughout her 20 year career in various ways to help those in need and less fortunate. She remains active in her church and community, and serves on the board of Young Men Service League.

Dr Traci looks forward to building relationships and trust with both her patients and their families. She believes a positive dental experience is an important part of childhood and she is intentional in making this a reality for her patients. When she is not helping make healthy smiles, Dr. Traci is spending time with her own five children. She absolutely loves being a mom! She enjoys running on the beautiful trails Austin has to offer, and has completed four marathons. She likes to travel with her friends and family, spend time at the lake, snow ski, shop and try new restaurants. She is excited to join Rising Stars Pediatric Dentistry in the Steiner Ranch community.
Dr. Traci SImons Pediatric Dentist

Nevin K. Allan, DMD, MSD

Nevin K. Allan, DMD, MSD, a native Texan, obtained her Bachelor of Arts in Biology from The University of Texas at Austin. She then went on to attend Arizona School of Dentistry and Oral Health where she earned a Doctor of Dental Medicine as well as a certificate in Public Health. Following dental school, Dr. Allan moved to Louisville, Kentucky where she worked for one year as a general dentist at a local family practice prior to completing her pediatric dental residency at the University of Louisville School of Dentistry. During her residency, Dr. Allan received extensive training in pediatric conscious oral sedation, treatment of children with special needs, behavior management, and hospital dentistry. She is an active member of the American Academy of Pediatric Dentistry, Texas Academy of Pediatric Dentistry and the American Dental Association.

Dr. Allan believes in taking the time to put her patients at ease while fostering lasting relationships with each and every child and parent. Her goal is to ensure that everyone feels welcome, encouraged, and relaxed during their visit. She feels fortunate to spend her days encouraging children and adolescents to improve their oral health. In her spare time, Dr. Allan enjoys spending time with family and friends, cooking with her husband, running on Lady Bird Lake Trail, listening to music, and trying all of the great food Austin has to offer.
Dr. Nevin Allan

Matthew Gillham, DDS

Dr. Matthew Gillham was born and raised in Nebraska. He graduated from the University of Nebraska Medical Center College of Dentistry with a Doctor of Dental Surgery degree, received an advanced education in general dentistry certificate from the University of Connecticut Health Center, and was awarded Fellowship by the Academy of General Dentistry. Dr. Matthew continued his education with specialty training in pediatric dentistry at Tufts University.

After practicing general dentistry for eight years and seeing how many adult patients attributed their dental anxiety to childhood experiences, Dr. Matthew was drawn to pediatric dentistry with a wish to prevent future dentally anxious adults. He still enjoys general dentistry but concluded that specialization would create the best opportunity for him to make the most meaningful and beneficial impact. Dr. Matthew is passionate about creating dental experiences that are positive, comfortable, educational and FUN! He believes that a parent/child team that is educated and working together is the best formula to combat early childhood tooth decay. Combining general dentistry skills with pediatric dentistry training, Dr. Matthew strives to provide exceptional care for children. When not at work, Dr. Matthew leads an active lifestyle to stay fit. He enjoys traveling, reading and spending time with his family and friends.
Dr. Matthew Gillham

Courtnie Williamson

Registered Dental Assistant/Assistant Manager

Maria Ramirez

Lead Registered Dental Assistant

Ana Rodriguez

Registered Dental Assistant

Luz Sanchez

Registered Dental Assistant

Ashley Cogburn

Orthodontic Treatment Manager

Ashley Cowman

Practice Administrator
Hill Country Pediatric Dentistry
608 Gateway Central #201
Marble Falls, TX 78654
8:00am - 3:00pm
8:00am - 5:00pm
8:00am - 3:00pm
8:00am - 5:00pm
8:00am - 3:00pm