Meet Our Glen Rose Team

Our team members are here to serve your dental needs. Click on the photo to learn more about our team members.

Geoff Barnum, DMD

Owner Dentist

Geoff Barnum grew up in southern Idaho and is the third of four children. He attended Idaho State University, where he received his Bachelor's degree in Biology. He took a leave from his studies to serve a Christian mission in South Korea.

While studying at Idaho State, he met his beautiful wife Becky. They have been married for over 14 years and have 6 children together. He enjoys spending time with his family when he is not in the office.

Dr. Barnum completed his dental school training from Case School of Dental Medicine in Cleveland, Ohio. The family enjoyed their time there but ran away from the bitter winters and have called Texas home since 2011.

Dr. Barnum continues to learn about new dental techniques by taking continuing education courses so he can provide the highest quality of care to his patients.

Dr. Barnum was very involved in athletics and outdoor activities as a youth and continues to enjoy these today. He enjoys frequenting all the local restaurants and can't get enough Tex-Mex!

Eric Dunaway

Associate Dentist

Coming Soon


Dental Assistant

Brooklynn began her Dental Assistant career in January of 2022. She grew up in a small town in West Texas called Jayton. She lives and went to dental assisting school at The Dental Career Center of Stephenville. She enjoys spending time with her family and going to the lake with friends. Brooklynn enjoys getting to know patients and taking care of their dental needs.



Sarah has been with our team since 2016 and has been a dental hygienist since 2002. She educates our patients about oral health and what they can do to achieve it. She loves to have fun with her job, and always tries to have a laugh with our patients!

We treat some truly special people in our office, and it’s a joy for her to get to know each one of them. In her spare time, she enjoys gardening, fishing and watching her pup, Sister, grow!


Dental Hygienist

Esther Gutierrez

Office Manager