Meet The Doctors


Bradley Diminick, DDS

Kingsport Dentist

Dr. Diminick grew up in Kingsport, where he attended Dobyns Bennett High School. Dr. Diminick then went to the University of Tennessee and received a degree in kinesiology. Dr. Diminick received a Doctor of Dental Surgery Degree from the University of Tennessee Health Science Center at Memphis. After graduating from dental school, Dr. Diminick returned to Kingsport to provide quality dental care for the community.

Dr. Diminick believes in giving back to the community, and has volunteered his time to provide dental work at several local dental organizations. Dr. Diminick believes in continuous involvement in professional organizations to maintain clinical excellence. He is a member of the American Dental Association and the Tennessee Dental Association. Dr. Diminick is committed to providing excellence in dentistry to the Tri Cities area.


Randall C. Montgomery, DDS

Kingsport Dentist

After growing up in Kingsport, Dr. Montgomery attended the University of Tennessee at Knoxville and received a Doctor of Dental Surgery Degree from the University Of Tennessee Health Science Center at Memphis. Upon completion of his dental degree, Dr. Montgomery returned to Kingsport in 1987 to become a partner in practice with his father, Dr. Robert Montgomery, at Chestnut Grove Dental Building.

Building on a family tradition of involvement, Dr. Montgomery has continued to volunteer his time in the local community in several different areas. One of the key areas of interest at this time is promoting and improving education for children having served on the Kingsport Board of Education from 2003 - 2015.

Dr. Montgomery believes that being a member of professional organizations is paramount in the pursuit of excellence in any profession. Since graduating from dental school his has been a member of the American Dental Association, the Tennessee Dental Association, and the First District Dental Society serving in various positions. His is also a member of the East Tennessee Academy of Dental Practice Administration and the former Mountain Empire Study Club.

Dr. Montgomery is a Fellow in the American College of Dentist, an honor bestowed upon a dentist by its members with only 3.5% of all dentists being recognized. The mission of the ACD is to advance excellence, ethics, professionalism and leadership in Dentistry. Also Dr. Montgomery is a member of the International College of Dentist. The ICD, an honorary organization, is recognized around the world as the preeminent international dental organization. One of the “Objectives” of the College is to advance the art and science of dentistry for the health and welfare of the public internationally.