Meet The Team

                                                      Our Team Brings Over 175+ Years of Experience!

Dental Hygienists



Courtney Mihatsch

Courtney is one of our highly skilled dental hygienists with over a decade spent in the pediatric dentistry. Courtney began her dental career as an assistant while she was still in high school. Courtney was raised in Wyoming, but moved to La Grange as quickly as possible in 1992. Courtney and her husband, Jody, have three children, Kambri, Gage, and Rogan.



Lee McNaney

Lee is one of our highly skilled dental hygienists, and also serves as our team’s Treatment Coordinator. Lee has been taking care of patients with Dr. Roberts since 1999. In her past dental life, Lee was a dental Laboratory Technician, as well as an orthodontic and dental assistant. Lee was raised in Oregon, now making her home in West Point. Lee and her husband, J.P., have three children, Whitney, Chase and Cody, and three granddaughters.


Thais Gerik

Thais is one of our highly skilled dental hygienists. She has been seeing patients in La Grange since 1997. Thais was raised in Austin and currently resides in La Grange. She and her husband, Rodney, have one son, Ben. Thais enjoys spending time with friends and family, especially activities with her son.

Dental Assistants

Karissa Dancoe

Karissa joined our team as a Dental Assistant in January 2022. Karissa was born in Houston, Texas and raised here in La Grange. She graduated La Grange High School in 2016 and went on to obtain her Dental Assistant license in 2020. She currently lives in La Grange with her boyfriend of many years and their three cats, Milo, Enzo, and Mia. In her free time she likes to workout, travel, and spend time with family and friends.



Viviana Riojas

Viviana joined our team as a Dental Assistant, September 2018. Viviana was born and raised in La Grange, Texas. She graduated from La Grange High School in 2014, then attended Dental Assisting Options and graduated with her Registered Dental Assistant license that same year. Viviana now lives in West Point with her husband, Aldair, and two children, Elliana and Elian. On her free time she likes traveling and spending time with family and friends.

Business Team



Taylor Schneider

Hygiene Coordinator

Taylor is a member of our business team, handling the hygiene schedule and social media. Taylor was born and raised in Fayette County. She graduated Fayetteville High School in 2016, and currently resides in Round Top. Taylor graduated from Dental Assisting Options in 2018 and joined the CornerStone Dental team in July 2020. In her free time she loves to travel and spend time with family, her dog, and friends.


Doris Pelt

Account Manager

Doris handles the daily accounting of the practice and is the chief organizer of our business team, joining the CornerStone family in 2002. She received her Bachelor of Business Administration from the University of Texas at Arlington, and before moving to La Grange, worked as the administrator for the Halliburton Foundation. She was born in Dallas, raised in Duncanville, TX, and currently resides in La Grange. Doris married her high school sweetheart, Phillip, over 50 years ago. They have three children, seven grandchildren, and six great-grandchildren. Doris loves to travel and relishes spending time with her family.


Elizabeth Holub

Scheduling and Insurance Coordintator

Liz is a member of our business team, handling the doctor’s appointment schedules and all things insurance related. Liz began her dental career in 1980 with Dr. Charles Ebel as a chairside dental assistant. After a brief stint in Houston, she returned to Fayette County, planted her roots, and remains a key component of our business team. Liz was raised in Schulenburg where she still resides. She and her husband, Mike, have two children, Matthew and Samantha.