Surgical Staff


Registered Dental Assistant

Henry has been working with Advanced Oral Surgery since 2009. He received his Registered Dental Assisting license in 1997 and has been in the oral surgery field for over 20 years. During his free time, he loves to spend time with his wife and two kids, Henry and Lucy. Henry also has a passion for computer graphics and has been working in this area for 10+ years. In 2017, Henry opened his own printing business.


Registered Dental Assistant

Nubia joined Advanced Oral Surgery in 2016. She enjoys helping and interacting with patients, and enriching her knowledge on a daily basis. In her spare time, she likes to read and shop and especially values quality time with her family.

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.”

Ron Ella

Administrative Assistant

Ron Ella has over 20 years of healthcare experience and has worked with Drs. Lemke and Kaercher since 2001. Her expertise is in accounts receivables and insurance claims, and she values the challenge of working closely with patients to maximize their insurance benefits. She likes to make every patient feel that they are receiving the highest quality care and concern. Aside from her work family, she loves having cookouts, scrapbooking and spending quality time with her family and friends.


Administrative Assistant

Brenda has been in the dental field for 30 years and had been at Advanced Oral Surgery since 2009. She was a Certified Dental Assistant for 20 years, and has 10 years of front office experience. The most rewarding part of her work is when she is able to put patients at ease in regard to their treatment and financing. In her spare time she volunteers with the San Antonio Stock Show and Rodeo and the Bexar County Junior Livestock Show. She enjoys traveling, reading, and spending time with family and friends at the coast.


Licensed Esthetician

Olivia is a Paul Mitchell Graduate and has been working with Dr. Lemke since 2014. Her goal is to enhance the natural beauty of her clients and to educate them on skincare. As an Esthetician, she is able to provide basic and customized facials, face mapping/skin analysis, chemical peels, microdermabrasion, deep cleansing with extractions and make-up applications. Olivia has been Dermologica Certified since 2013 and was named Esthetician of the year in 2017 for IMAGE Skincare. In her free time, she loves to spend time with family and friends.