Surgical Staff


Registered Dental Assistant

Ovela has worked in the dental field for almost 20 years in general dentistry,
periodontics, and oral surgery. She is DAANCE certified, having passed the Dental Anesthesia Assistant National Certification Examination. She joined the Advanced Oral Surgery family in 2015. In her spare time she loves to spend time with her daughter and her dogs…weekends are spent working on the yard and crafting with her Cricut. A lifelong resident of San Antonio, Ovela also heads to her house in Uvalde on the river to spend holidays with family.



Laura has been a nurse for half of her life. She met her ‘work family’ at Advanced Oral Surgery in 2010 and she absolutely loves her job (and chocolate cake)! She looks forward to meeting you.

Administrative Staff


Practice Manager

Bea has 30 years of dental healthcare experience and has worked with Drs. Lemke and Kaercher since 2000. She received her Bachelor’s degree in Organizational Development with a minor in Human Resources from the University of the Incarnate Word. As an Air Force wife, Bea has traveled a great deal and in her free time loves taking pictures. Her hobby is turning those pictures into wonderful memories through scrap booking. “My scrap books tell stories that will last for generations to come.”


Administrative Assistant

Roxanne has been working alongside Drs. Kaercher and Lemke since September 2005. She takes much pride in Advanced Oral Surgery and the quality care of all patients. She and her husband have one daughter. Her priorities are “God, family & work,” and outside of work she most enjoys sitting out on the patio, BBQing with family and friends.


Administrative Assistant

Juanita has been with Advanced Oral Surgery of Helotes since August of 2008. She is a
lifelong resident of San Antonio and enjoys hanging out with family and friends. She also
enjoys shopping, going to the movies, and scrapbooking.