About Our Team

Leann Barnwell, Office Manager

In 1990 Leann began her career as dental assistant. Then she expanded her knowledge at Ogeechee Technical College and graduated in 1996 becoming a LPN. Returning to dentistry in 1998, she joined the administrative team to work on the business aspects of a dental office. She joined our team in 2017 becoming our claims specialist.

She and Jimmy married in 1985. They have 2 children, Kevin and Megan. Leann and Jimmy are blessed with 3 granddaughters. She enjoys fishing, shopping, and loving on her grandchildren.




Gail Garrett, Business Associate

Gail has been with Dr. Tosto since 2019. Her passion for patient care began over 30 years ago when she joined the medical industry. She is a claims specialist and enjoys helping patients understand their benefits.

She has been married to her husband Randall for over 34 years. Recently, they added Priscilla, their Morkie to their family.  In her spare time, Gail enjoys going to the beach, cooking for family and friends, and listening to her husband, “Rockin Randall” play in his band. 




Shellie Rowell, Dental Assistant

In 1999 Shellie received an opportunity to shadow her childhood dental office and that is the day her dental career began. With over 23 years experience, Shellie joined the team in 2016.In addition to assisting, Shellie has also been provided the tools to perform dental office manager roles. Her passion is helping patients get the care they need. As Dr. Tosto’s lead dental assistant, she travels with him to each location where he practices.

Shellie and her wife Jen have a cat named Cotton. In her spare time, they enjoy traveling, going to the beach, cooking, and spending time with family and friends.



Kelly Kerner, Registered Dental Hygienist

Karen Elizabeth Brinker, Director of Operations

Karen fell in love with patient care working as a dental assistant in 2000. She has worked along well renowned dentists who have elevated her career with continuing education, clinical duties, administrative and managerial roles, dental consulting, and now works side by side with Dr. Ronald A. Tosto as his Director of Operations at each location.

In her spare time, Karen, her husband Kris, her children, and dog Ace enjoy relaxing by the pool, watching Nascar and UGA football, or hitting the golf course. 






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