Smart Mouth Dentists - About Us

Dr. Benjamin Hill (Denison, TX)

Doctor Benjamin Hill graduated from the prestigious dental program at the University of Southern California. Dr. Hill offers years of dental experience and the latest in dental technology to provide you personalized service that gives you and your family beautiful smiles.

Dr. Hill and his wife, Dori, have 4 daughters and 1 son. His father is a retired dentist, and Dr. Hill’s wife has many relatives who are dentists. He has always wanted to “do dentistry” and enjoys meeting new patients and helping them feel healthier and more confident in maintaining a healthy smile. Dr. Hill also enjoys playing guitar and participating in church activities.

Dr. Robert Wilson (Denison, TX)

Dr. Robert Wilson has been practicing dentistry in North Texas since graduating from dental school at the University of Southern California in 2009. While in school, Dr. Wilson was accepted into the Esthetic Selective dentistry program where he trained under the world-renowned Pascal Magne. He enjoys using the principles he learned not only to improve smiles, but also to provide lifelong solutions for common everyday dental problems. Dr. Wilson enjoys getting to know his patients and helping them feel comfortable and welcome, and he always strives to provide the best experience possible.

Dr. Wilson is active in his church where he has recently participated as a Sunday School teacher in his congregation. In his free time, Dr. Wilson enjoys biking and swimming and recently participated in a number of triathlons throughout Texas. He also enjoys a good long day of College Football while trying to finish up one of the many DIY projects that he has started throughout the house.


Dr. C.M. Beatty (Denison, TX)

Dr. C.M. Beatty comes to Smart Mouth with 49 years of experience, including owning his own practice for about 46 years. Dr. Beatty has been married to his lovely wife Margaret for 55 years. They have 2 children and 2 grandchildren. He enjoys playing golf, fly fishing, and soccer. Dr. Beatty loves spending time getting to know each of his patients.

Dr. Michael Evans (Durant, OK)

Doctor Michael Evans grew up in southern California and graduated from dental school at the University of Southern California. He has dentistry in his blood with a grandfather, two uncles, and a brother-in-law (Dr. Hill) who are dentists. Dr. Evans chose to become a dentist because he loves to work with people and wanted to be able to provide a valuable service to the people in his community.

After high school, Dr. Evans served a mission for his church in the Dominican Republic for two years. While there, he was able to serve the people and learned to speak Spanish. He is a cancer survivor who went through chemotherapy and radiation therapy before starting dental school, and feels deeply for others going through similar situations.

Dr. Evans loves spending time with his family. He and his wife, Jenae, have 2 daughters and one son. 

Dr. Tracy Kirk (Decatur, TX)

Dr. Tracy Kirk grew up in Ohio where she completed her undergraduate degree in Biology, and then completed a Master’s degree in Biomedical Sciences at Florida Atlantic University in Boca Raton, Florida. She then returned to the Midwest to earn her DDS from Creighton University’s School of Dentistry in Omaha, Nebraska. Dr. Kirk prides herself in providing compassionate and high quality care to her patients.

When not at the office, Dr. Kirk and her husband, Justin, enjoy cooking, watching movies and spending time with friends. They are also beginning to explore Texas through backpacking local lakes and parks.

Dr. Kirk is excited to get to know the Decatur community as a member of The Smart Mouth Family Dentistry team.

Dr. Jeff Johnson (Wichita Falls, TX)

Dr. Jeff Johnson grew up near Seattle, WA as the oldest of six children. He spent two years doing volunteer missionary service in Las Vegas for his church where he learned fluent Spanish. After graduating from Brigham Young University with a degree in Business Finance, he went on to attend the Loma Linda University School of Dentistry in Southern California, where he graduated with honors.

Dr. Johnson loves to serve and has spent time volunteering at community dental clinics and also traveled to Honduras to provide free dental care to the people there. He has always had an eye for detail and strives to get to know each of his patients personally.

Together with his wife, Brenda, they have one very active baby boy that keeps them busy. Dr. Johnson enjoys spending time with his family, playing & watching sports, traveling, and volunteering at his church. Although he was raised in Washington, he spent the first few years of his life in Texas and is excited to be old enough to enjoy it now!

Dr. Eric L. Mack

Dr. Mack received his DDS degree from University of Texas Houston in 2004. He then joined the Public Health Service in Fairbanks, AK, and practiced general dentistry for several years in Denver, CO. In 2012, he completed a 1 year post-graduate program in Oral and Maxillofacial Surgery at the University Of Nebraska Medical Center College Of Dentistry.

His love of oral surgery and background in general dentistry gives Dr. Mack a unique perspective on oral health. He has been working in people’s mouths for over 15 years and he believes in early treatment and intervention.

Dr. Mack and his wife Tosha are the parents of 6 wonderful children. Three boys and three girls keep Dr. Mack busy, going from one activity to the next. When he does have a spare moment, he enjoys woodworking, golf and college football, and has recently undertaken the restoration of a 1957 Chevy pickup.

Dr. Steven Robison (Greenville, TX)

Dr. Steven Robison was born and raised in sunny Southern Utah. After graduating from high school he served a two-year mission for his church in Siberia, Russia where he learned to speak Russian, to enjoy other cultures, and learned just how much he loves warm weather.  After returning home he began preparing for dental school and earned his associates degree before taking a break from school to serve his country in the US Army.

Dr. Robison spent the next 5 years in active duty as a Korean linguist and, after separating from the military, he returned to school with his family in tow.  He earned a Bachelors in Human Development from the University of Utah, a Masters in Biomedical Science from Midwestern University, Arizona, and then went on to graduate from Midwestern University’s College of Dental Medicine Illinois campus where he enjoyed state of the art facilities and learning all of the newest techniques – and, again, spent his winters dreaming of moving south again!  During his military service he had been stationed at Goodfellow Air Force Base in San Angelo, Texas.  Dr. Robison and his wife had fallen in love with the state, the way of life and the people.  Though they have enjoyed living in many wonderful places during the 10 years since they left, they are very excited to be returning to Texas again!

Dr. Robison and his wife, Katie have been blessed with 4 amazing children.  He is a movie nut who loves to use his spare time reading, volunteering with his church, and spending time with his family.

Dr. Ross Williams (Paris, TX)

Dr. Ross Williams is a native of Paris and graduated from Paris High School. He completed his Bachelor’s degree at Texas Tech University and then graduated from dental school at The University of Texas Health Science Center San Antonio. After practicing dentistry in southeastern Oklahoma, he is excited to return to his hometown of Paris!


Dr. Williams and his wife, Shelby, have been blessed with one very busy little boy, Ethan, who keeps them on their toes.  When he is not practicing dentistry, he loves to spend time with his family.  He is an avid outdoorsman and enjoys exploring and hiking with the family dog, kayaking and riding his motorcycle.