Clinical Quality and Operations Leadership

David Vieth, DDS, Chief Dental Officer

An accomplished dentist with more than 35 years of experience, Dr. David Vieth earned his Bachelor of Science from Bowling Green State University and his Doctor of Dental Surgery degree from Ohio State University Dental School. Upon graduating, Dr. Vieth built over many years a multi-specialty group dental practice to serve Buffalo and Western New York. Throughout the years, he expanded the practice, growing his team to more than 200 people supporting four locations.

Inspired by the American Dental Association´s rallying cry to improve access to dental care for underserved children, he sold his thriving practice and joined Kool Smiles in 2007 as the organization’s Regional Dental Director for Connecticut and Massachusetts helping to open new Kool Smiles offices in those states along with South Carolina, Louisiana, Texas, Arkansas, Kentucky and Indiana. In 2009, Kool Smiles named him Chief Dental Officer and in recent years he has helped the organization build its successful Orthodontics, Oral Surgery, General Anesthesia and Endodontics programs.

He is a member of the American Dental Association and the American Academy of Pediatric Dentistry. He has served as member and officer of various civic organizations, most notably as an officer of the Williamsville Rotary Foundation, a foundation established by the Williamsville Rotary Club in Buffalo, of which he was a member for 25 years.

When he is not travelling with Kool Smiles, Dr. Vieth resides in Naples, Florida. He has three adult children and seven grandchildren. His children have also chosen a healthcare career and are currently working as a Doctorate in Physical Therapy, Pediatric Dentist and an Optometrist.

Dale Mayfield, DMD, Chief Dental Officer

An accomplished dentist with more than 20 of years of experience, Dr. Dale Mayfield earned his undergraduate degree in Exercise Physiology from Brigham Young University and his Doctor of Dental Medicine from the Medical College of Georgia. Following graduation, Dr. Mayfield spent 10 years working in private practice in Decatur, Georgia, gaining experience in all aspects of dentistry, including complex adult procedures and pediatrics.

Having served on mission trips around the world and seeing a great deal of unmet oral healthcare need, Dr. Mayfield joined Kool Smiles in 2007 with a strong desire to provide quality dental care to underserved children and families in the U.S. He helped open and manage Kool Smiles offices in Arizona, Washington, Texas, New Mexico, Oklahoma and Mississippi. Currently, he serves as the organization’s Chief Dental Officer where he has responsibility for nearly 130 offices throughout the U.S.

Dr. Mayfield is a proud member of the American Dental Association, the American Academy of Pediatric Dentistry, the Georgia Dental Association, the Academy of General Dentistry and the Northern District Dental Society. He is also a volunteer with CHOICE Humanitarian—a nonprofit, grass-roots organization focusing on the sustainable transformation of rural villages from extreme poverty.

Dr. Mayfield resides in Georgia; he is a father of three and an active member of his church community, an avid fly fisher and outdoorsman.

Tu Tran, DDS, Founding Dentist

Dr. Tran is a Founding Dentist and owner of Kool Smiles, P.C. Dr. Tran was formerly Lead Dentist at Smile High, General Dentistry for Children in Denver, Colorado. Before that, Dr. Tran worked at Perfect Teeth of Denver, Colorado.

Dr. Tran received his undergraduate degree in biology and chemistry from the University of Denver and his Doctor of Dental Surgery degree from the University of Colorado. Dr. Tran is a member of the American Dental Association, the Colorado Dental Association, and the Georgia Dental Association.