Meet The Doctors

Dr. Sam Barnhart, DDS

Dr. Sam, a central Missouri native, grew up baling hay and feeding cattle on his parent’s farm just West of Vienna, Missouri.

In high-school, Dr. Sam experienced first-hand the world of dentistry and spent an entire Summer in his father’s office; Dr. Timothy Barnhart, as a dental assistant. This pivotal time in his life opened his eyes to the types of services a dentist can perform. He knew becoming a dentist was his goal from then on.


Dr. Sam graduated from the University of Missouri, Kansas City School of Dentistry with a Doctorate in Dental Surgery (D.D.S.) in 2009 and has been practicing in Westphalia, Missouri, just outside of Jefferson City, ever since.

Dr. Sam continues his education post dental school by taking a range of education courses all across the country. Some of his post grad classes are: Multiple Dental Implant Training and Placement Courses, CEREC Technology course work, completing the Series CEREC Levels 1-6, dental laser training, and advanced training on 3D radiology, which is implemented right here in the office. Dr. Sam places and uses both conventional, and mini implants and is highly versed in implant dentistry.

Dr. Sam is working on becoming a Fellow of the Academy of General Dentistry and will pursue a master in implantology after that.

New Office, New Technology

In January 2014, Dr. Sam moved his office into the old St. Mary’s Pharmacy building located next to the Westphalia Retirement Center to improve services to his clients. Dr. Sam is proud of the new technology offered; Huntline Dental Group is now able to provide more comprehensive care than ever before.


Personal Life

Dr. Sam lives in Westphalia with his wife, Leslie Struemph Barnhart, and their three children, Hudson, Hoyt, and Beckett! “The kids have changed my life forever,” says Sam.

In his free time, Sam enjoys archery hunting and producing the local television series, Huntline TV. You can watch his TV show anytime you’d like right on the Huntline TV website, and on his YouTube channel!




Dr. Madison Williams, DMD

Dr. Maddie grew up in Columbia, Missouri.  She spent her childhood performing on many stages across the state of Missouri as a dancer and on the ball fields as a softball player.

In junior high, Dr. Maddie participated in a school-wide career day, where she chose to shadow her orthodontist. From that day on, Dr. Maddie developed a passion for the field of dentistry and serving the individuals of her community.


Dr. Maddie graduated from the University of Missouri in 2019. She then went on to attend A.T. Still University of Missouri School of Dentistry and Oral Health, where she graduated in 2023. While completing her undergraduate degree, Dr. Maddie had the opportunity to collaborate with the Huntline Dental Group team through an internship. From this experience she was able to create relationships with the individuals of our community as her internship lasted throughout the last two years of her undergraduate journey. Dr. Maddie felt a sense of belonging and knew that this is where she wanted to be.

Dr. Maddie continues her education through a range of courses, including working alongside Dr. Sam to further her knowledge of the surgery and implant aspects of dentistry. Dr. Maddie was granted an award from the Academy of Implant Dentistry while she served her terms as president of her dental school. Both Dr. Maddie and Dr. Sam work in tangent placing implants for Huntline Dental Group’s surgery department.


When Dr. Maddie is not practicing dentistry, she enjoys spending time with her fiancé and their Australian Shepard, Oakley, in Columbia. They love traveling and spending as much time outdoors as they can!