Meet Our Dentists & Dental Staff

Our dentists pride themselves on providing amazing customer service. Whether you’re coming in for a routine cleaning or you need emergency tooth repair, our staff will take care of you. We understand that going to the dentist can be stressful, so the staff at Williamson Dental will do everything we can to make your experience as pleasant as possible. We offer high quality dental care with unparalleled customer service.

Dr. Williamson

Dr. Williamson loves dentistry because it allows him to work with his hands while combining his love of science and art. He enjoys making a real difference in his patients’ lives and is grateful to own his own practices as it allows him flexibility to travel and spend quality time with his family.

Dr. Haarmann

Dr. Haarmann attended St. Louis University and Southern Illinois University School of Dental Medicine. After attending St. Louis University and Southern Illinois University School of Dental Medicine, he is proud to be providing the highest quality of care possible.

Dr. Williamson

Dr. Williamson loves dentistry because it allows him to work with his hands while combining his love of science and art. He enjoys making a real difference in his patients’ lives and is grateful to own his own practices as it allows him flexibility to travel and spend quality time with his family.

Dr. Haarmann

Dr. Haarmann attended St. Louis University and Southern Illinois University School of Dental Medicine. After attending St. Louis University and Southern Illinois University School of Dental Medicine, he is proud to be providing the highest quality of care possible.

Wendy
WendyDental Hygienist
Wendy is originally from Millstadt but has lived in Columbia for the last 18 years. Wendy went to SIU Carbondale and graduated with a bachelor’s degree in dental hygiene. Wendy has been with Williamson Dental since 2001. She has enjoyed watching her patients grow up for the last 21 years and many have grown to feel like family. Wendy always greets patients with a smile and her laugh is contagious. Her patients always leave with a smile because they know they’ve been well cared for. When she’s not at work, Wendy enjoys cooking, spending time with family and friends, traveling with her husband, and playing with her adorable fur baby, Belle.
Emily
EmilyDental Hygienist
Emily was raised and still resides in Valmeyer, Illinois. She has always loved helping people, which led her to a career in the dental field. She attended college at Forest Park in St. Louis. She has a passion for patient care and strives to make a positive impact on all her patients. Her outgoing, friendly demeanor puts patients at ease and assures a positive hygiene experience. We were thrilled when Emily joined our practice in 2019! When Emily is not working, she enjoys being outdoors, working out, concerts, reading, traveling, and spending time with her family and friends.
McKenzie
McKenzieDental Hygienist
McKenzie is a compassionate dental hygienist with excellent interpersonal and clinical skills. She attended Youngstown State University. McKenzie’s husband currently serves in the US Air Force, which allowed her the opportunity to work in dental practices across the country, including Virginia and California. McKenzie prides herself on providing high-quality dental care and enjoys interacting with her patients as she gets to know them. She is glad to call Belleville home and looks forward to settling in with her husband and two young children. In her leisure time, McKenzie enjoys traveling, antiquing, concerts, and hiking.
Jennifer
JenniferDental Hygienist
We are pleased to welcome Jennifer to our dental hygiene team. She comes to us with more than fifteen years of clinical experience. Jennifer attended Richland Community College and continued her education with a Bachelor of Science in Dental Hygiene from Southern Illinois University Carbondale. Jennifer has been part of the Waterloo community for the past nine years. She enjoys family time with her husband and two children. Her kids are involved in baseball and softball which keeps them very busy. Jennifer also loves gardening, concerts and spending time just being around her family.
Toni
ToniDental Assistant
Toni is a very caring and experienced Dental Assistant and has worked side-by-side with our dentists for 34 years. She has been interested in dentistry since high school. As a lifetime Columbia resident, she loves being able to take care of the people in her community and enjoys getting to see their friendly faces every day. Her positive outlook in life is infectious and our patients enjoy catching up with her when they come in for their appointments. She works tirelessly to make sure our patients are taken care of with the utmost care and professionalism. Toni is an avid runner and enjoys working out, taking care of her yard, and watching her kids compete in their favorite sport. She also enjoys listening to her husband play music at community events.
Robyn
RobynDental Assistant
Robyn has been with Williamson Dental since December of 2022. She attended Missouri College for Dental Assisting and has been working in the Columbia area for the past fourteen years. She loves keeping up with the latest innovations in the ever-changing world of dentistry. She enjoys meeting new patients and listening to their concerns and needs to provide the best care. Her goal is to always make her patients feel comfortable and well cared for. She is married with two young boys who keep her busy. When not working, she enjoys family camping trips, exercise boot camp, and spending time with family and friends. We are happy to welcome Robyn to the Williamson Dental team.
Nina
NinaOffice Manager
We are excited to have Nina join the Williamson Dental team as Office Manager. Nina attended Missouri State University and completed the Dental Hygiene Program from St. Louis Community College. Nina worked for eight years as a dental hygienist, gaining experience in practice management and providing excellent patient care. Nina grew up in the St. Louis area and has lived in Columbia for the past three years. She enjoys getting involved in the community and seeing familiar faces in the office. She shares her love of St. Louis sports with her husband and daughter. Her two loveable dogs add a bit more fun to their lives and keep them busy.
Kris
KrisPatient Care Coordinator
Originally from South County, St. Louis, Kris has lived in Waterloo for the past 19 years. She started her career at Meramec Community College with a certification in Dental Assisting. She has worked in the dental field for 36 years and joined Williamson Dental in 2017. She loves getting to know her patients and making sure they are comfortable. Her cheerful, calm attitude makes patients feel relaxed, even when they are anxious. Her caring commitment to patient care makes Kris an integral part of the success at Williamson Dental. Kris has been married to her high school sweetheart for 36 years and raised three wonderful sons. Two of her sons are currently serving in the US Military (Air Force and Navy). After a long day at work, Kris enjoys concerts, relaxing with her husband, and playing with her pit bull, Frankie.
Ashley
AshleyFront Desk Receptionist
Ashley joins Williamson Dental with a background in customer service and dental assisting. Her position as Front Desk Reception allows her friendly attitude and outgoing personality to enhance our patients’ experience. Skilled in scheduling, communication and insurance verification, Ashley will be a huge asset to our team.
Ashley has lived in the Waterloo area her whole life and loves being part of her community. She has an adventurous spirit and enjoys keeping up to date on community events and political awareness.
She looks forward to a long, successful career with Williamson Dental and we are grateful to have her on our team!
Jen
JenInsurance Coordinator
Jen was raised and has lived most of her life in Columbia. With nearly 20 years of experience in the dental field, Jen brings a wealth of knowledge and a friendly smile to our team! She takes pride in helping patients navigate their insurance benefits and making sure every visit runs smoothly from start to finish. When she’s not at the office, Jen enjoys getting creative with crafts and spending time doing what she loves most—making things by hand and bringing ideas to life. Her attention to detail and caring nature shines through in everything she does! Jen also enjoys spending time with her husband, 2 kids, 2 bonus kids and her German Shepard Lizzy! We are so excited to have Jen as part of our dental family!

See Our Dental Team In Action