About Our Staff
Assistants
Cheryl has worked with Dr. Keller for over 30 years and is our office treatment coordinator and our primary research investigator for our on-going research projects and professional articles and presentations.  Her knowledge and love of people enables her to work with people to help them find answers to their questions and problems.
Denise has worked with Dr. Keller for over 25 years.  Denise has extensive training and knowledge regarding all aspects of dentistry, but focuses most on patients that have acute and chronic pain.  She helps us maintain a fun, yet proficient atmosphere in which to work.
Betty has eleven years of experience working with all aspects of dentistry and serves as one of our team coordinators.  Her warmth and caring attitude is immediately recognized and she is most professional in all aspects of her daily performance.
Tracy works as a dental assistant to help our patients understand their conditions and what is needed to help them keep their oral health.  Her experience allows her to help patients from a personal approach as she understands how patients can obtain better health.
Cheri has been as assistant for about 10 years.  She has worked for Keller Professional Group 3 of those 10 years.  She enjoys all aspects of dentistry but has extensive training in oral surgery. 
Erica is our newest team member and is a recent graduate from Allied College for dental assisting.  She did her externship with us.  We loved her so much we decided to keep her. 
Hygienists
Ann is a very experienced hygienist and has been instrumental in the development and utilization of the Perio Protect Method.  She is most compassionate and understanding in helping the patient obtain a higher quality of health care and will help patients better understand how they can be in control of their own oral health and therefore have an opportunity for better overall health.
Deb is an experienced hygienist.  She works with us part time helping our patients with their oral health to better their overall health. 
Front Office
                                                          
Dian is here to help patients obtain the best insurance coverage they can acquire with their medical and dental insurance.  She will work with patients so they can acquire the best health options while maximizing their insurance benefits.
Cherrie works to schedule your appointments in a way that works with your schedule.  She will assist patients in obtaining the time needed to restore or maintain their optimal health.
Deb works part time greeting our patients and answering the phones.  She assists patients with their appointments and completing all necessary paperwork. 
Debbie is also part time and she shares the responsibilities with Deb, greeting patients and helping them be prepared for their appointment. 
Amy has worked for Keller Professional Group for 15 years as the Business Manager.  She has her degree in business from Webster University.  She has attended multiple continuing education programs and provides business programs for the Perio Protect webinar. 
Lesley is a recent graduate from the University of Missouri Columbia, a native to St Louis.  She has always had an interest in orthopedic physical therapy, particulary the more specialized aspects such as manual therapy, women's health and TMJ.  She completed her final clinical at Core Services and loved the work so much she began working there in June 2009.  She also enjoys going to the zoo, watching movies, spending time with her family and baking. 
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3955 Bayless Avenue, Suite 100, Saint Louis, Missouri 63125
Phone: 314.638.4190 | Fax: 314.638.3900 | drdkeller@drduanekeller.com
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Dr. Keller is a general dentist who treats TMJ and head and upper quadrant pain patients from all over the world. Dr. Keller works with dentists from all over the world and via the Internet is able to assist in long-distance treatments. New patients are always welcome. Dr. Keller has been instrumental in developing the TMJ-Orthodontic Method and the Perio Protect Method and offers all forms of dental care.