302 North 3rd Street, Mabank, TX 75147

"Hometown favorite since 1979"

Meet The Doctors

We at Mabank Dental strive to provide the best comprehensive compassionate care available.

Clayton Gautreaux, DDS

Dr. Clayton Gautreaux is a graduate of Texas Tech University and received his doctorate in Dental Surgery from Baylor College of Dentistry in 1979. That same year, he moved to Mabank and established his practice, Mabank Dental and Orthodontics, where he provides the latest advancements in dentistry and utilizes state of the art technology to provide his patients with the utmost in care and comfort.

Over the years, Dr. Gautreaux has been very active in the community and has participated in the Chamber of Commerce, Rotary Club, PTA and coached Little League sports. He has served in Tejas Missions, a Christian organization serving the dental and medical needs in Central America. He currently serves on the board of directors at Texas Health Resources, Presbyterian Hospital of Kaufman.

Clayton is married to Lori and they have three grown children and three grandchildren. He enjoys fishing, traveling and is an avid golfer.

David D. Simmons, DDS

Dr. David D. Simmons (note his initials are DDS) was born to be a dentist and is proud to be a fifth-generation dentist tracing back to 1848! He graduated from Baylor College of Dentistry in 1993 and has since been in private practice. In 2006, Dr. Simmons established a dental practice in Jacksonville, Texas, which he sold and has returned to Mabank Dental where he had previously worked with Dr. Clayton Gautreaux.

Dr. Simmons is dedicated to dentistry and has worked in the “dry mouth” clinic at Baylor helping patients suffering from Sjögren’s Syndrome and other diseases that cause dry mouth. He stays current with advanced dental technologies and is committed to providing the best care for his patients.

David is married to Lana, a registered nurse, and she is originally from Eustace. They have one son, Dustin, who is a student at the University of Texas – Dallas, studying game design and development. In his spare time, Dr. Simmons enjoys riding motorcycles, fishing, playing the guitar and the harmonica.

“I worked with Dr. Gautreaux from 2004-2006, and I am very happy to be back as this is a great atmosphere to practice in.”

Seth Hintze

Dr. Seth Hintze is a native of Minnesota where he received his degree in Biochemistry at Minnesota State and then went on to earn his doctor of dental surgery from the University of lowa.

Dr. Hintze is passionate about providing the highest quality care. Continuously taking courses to improve his skill set and increase his knowledge. His favorite part about dentistry is giving back to the community by volunteering.

While away from dentistry he enjoys spending time with his fur babies Kip and Stella. He also enjoys cooking, traveling, and watching his favorite sports teams. Go Hawks!

Samuel Ellsworth, DDS, MS


Dr. Sam Ellsworth joined the United States Navy in 1992 after graduating from High School. He received his Bachelor of Science degree from the University of Texas in 1998, while simultaneously serving in the Navy. After leaving Austin, Dr. Ellsworth was stationed in Pensacola, Florida and Corpus Christi, Texas while attending Naval Flight School where he flew the T-34. Stationed aboard the supercarrier USS George Washington. Dr. Ellsworth was involved in our country’s post-9/11 efforts off the coast of New York.

Dr. Ellsworth discovered his passion for dentistry while serving in the Navy. Upon discharge from the Navy, he attended the University of Houston and taught biology while awaiting entrance to dental school. In 2006, Dr. Ellsworth began his dental education at Baylor College of Dentistry. After graduating, he began advanced training in Periodontics and completed a three-year residency also at Baylor. Dr. Ellsworth is Certified by the American Board of Periodontology.

When Dr. Ellsworth is not at his office, he spends as much time as possible with his wife Virginia as well as Ryan, Lily, and Grace, his 3 children. He teaches Sunday school and is involved in missions at Highland Park United Methodist Church. He has been involved in dental mission work such as The Texas Mission of Mercy and others for more than 9 years. He enjoys camping, hiking, bicycling, canoeing, scuba diving, reading, and traveling.

Dentistry For Children

Daniel Donohue, DDS

Pediatric Specialist

Dr. Daniel Donohue was born and raised in El Paso, Texas. He graduated from the university of Texas at El Paso with a Bachelor of Science in Biology. He continued his education at the University of Texas Health and Science Center in San Antonio, Texas. He received his Doctor of Dental Surgery in 1986 and practiced as a general dentist until 1989. He then entered a postdoctoral pediatric dentistry program and received his certificate in Pediatric Dentistry in 1991.

Dr. Donohue is a member of the American Dental Association, American Academy of Pediatric Dentistry, Texas Dental Association, Texas Academy of Pediatric Dentistry, Southwestern Society of Pediatric Dentistry and the Fort Worth Dental Society.

Dr. Donohue joined Mabank Dental in 2010, offering full-service dentistry for children. He believes in treating every child as if they were his own and partners with parents to provide a compassionate and positive experience.

Daniel’s wife, Marla, is also a dentist and they have two children.