Meet the Team

Sara Evanessa Ortega, Registered Dental Assistant

Sara has just been with us for almost two months now. She graduated from high school in 2008 and received her RDA license from UT Health and Science in San Antonio in 2014.

Sara’s parents and her husband are from Mexico. She has one 9-year-old daughter and two sons, ages 7 and 2. In her free time, Sara loves to play soccer. She plays every Tuesday night on an indoor women’s league.

Sara’s favorite thing about being part of this practice is that it is a recognized 5-star office. She contributes to our success by meticulously preparing every procedure for the dentist, and being there to assist him. She says: “I’m honored to be a part of this awesome team,” and we’re thrilled to have her!

Kristi Stimits, Dental Hygienist

Kristi graduated from LIT in 2009 with her Dental Hygiene degree, and has been practicing for 8 years! She has been with us for just a year and a half, and we are happy to have her as a part of our team. She makes our practice better by providing patients with tools and education to improve their oral health.

Kristi says: “I really enjoy being a part of Dr. Koch’s team and love that the practice feels like family.” She also enjoys offering the patients innovative technology, thus allowing them to become healthier.

In her free time, Kristi enjoys spending time with her family, shopping, and doing anything outdoors.

Mylette Malone, Treatment and Financial Coordinator

Mylette has been with us for over 16 years. She says, “I love being part of a practice that provides high quality dentistry and offers the latest techniques to our patients. I love interacting with our patients, and I always want them to leave our office feeling they were well taken care of!”

Mylette has been happily married for 26 years. She has two sons, Ryan (21) and Matt (16). Mylette enjoys sewing, quilting, and spending time with her family. She is also very active in her church, teaching pre-K Sunday School and 2nd grade Awanas.

Kelli Costanzo, Registered Dental Hygienist

Kelli received her Associates Degree in Applied Science from Lamar, and has been working with us for 7+ years now. She is married with a 13-month-old little boy.

She says that her favorite part of the practice is Dr. Koch’s love for technology and commitment to always learning new things. “It’s a great environment to work, and everyone’s a team player. I love building relationships with our patients.”

Kelli makes our practice successful by being a team player and open to learning new ways to help our patients reach their dental goals. She is passionate about providing every patient with care that is personalized to their individual needs.

Itzel Villarreal, Sterilization Tech

Itzel has been married to her husband for almost 10 years, and she has a son (8 years old) and a daughter (6 years old). She loves being involved in all of her children’s sports activities.

Itzel has been with us for 4 years, and she makes our practice a better place. Her role is to support the team by making sure all of our tools and utensils are pristine. Sterilized tools mean safer and more sanitary dental care for all of our patients.

Erica Smith, RDA

Erica has been with our practice for 4 years. She attended Central Heights High School, graduating in 2007, and Tyler Junior College, graduating in 2010.

Erica says she enjoys the technology and kind Christian environment of the practice. She contributes to our daily operations by providing great customer service, listening to our patients’ needs, and supporting Dr. Koch during treatments.