Welcome to Green Leaf Dental Care, conveniently located in House Springs, Missouri. Here, our professionals know that dental health is not just about white smiles: it’s about having strong teeth and healthy gums. It’s about prolonging the simple joy of eating delicious things! Our mission is Helping our Community Smile.

We aim to educate our patients in a safe environment while offering them necessary comprehensive care. We understand that many people have anxiety about dental treatment, so we created a soothing environment and a scheduling system that never keeps you waiting long. By combining the latest technology with traditional techniques, we give our patients the best care in the area.

Meet the Team


Nathan Suter, D.D.S.

Dr. Suter is a graduate of University of Missouri-Kansas City School of Dentistry with a Doctorate of Dental Surgery degree. He also has a Bachelor of Science degree in Business Administration from Webster University in St. Louis. He now splits his time between Green Leaf Dental Care and COMTREA

Jane Collignon, RDH.


Jane is proud to be a Dental Hygienist for 47 years with the last 25 years in House Springs. She has enjoyed meeting and getting to know all her patients, watching their kids grow and having children of her own. Teaching generation’ good dental health habits. She has lived in Cedar Hill for 39 years and has a daughter, son, daughter in law and her pride and joy, Tommy, her grandson.


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Lisa graduated from Meramec Community College with a dental assisting degree in 1985. She worked for 22 years for endodontic specialists as an assistant/receptionist. She has worked for Dr. Bruce Collignon for 11 years as a receptionist. She is the pulse of the practice, having her hands in everything that goes on in the office and knowing every small details about the patients. She sees them as a part of the family and enjoys that they feel comfortable when visiting the office. She is a native of High Ridge. She and husband Joe are proud fur parents to Parker.

Kayla Suter,

Hailing from Richmond, Virginia, Dr. Tobias Keene brings a bit of unabashed Southern hospitality to all his patients. He moved to Washington, D.C. over thirty years ago as a freshman at Ivy College. Right after graduation, he attended World University’s School of Dentistry. Before opening Keene Dental in 1994, he worked for free clinics and some of the finest practices in the District. He is part of the 123 Dental Association and stays up-to-date on the latest dental discoveries. When not striving to keep his patients happy and healthy, he’s enjoys hiking with his family in Rock Creek Park.

Maureen, Dental Assistant


Maureen is a dental assistant. After graduating high school she attended Missouri School for Doctors Assistants. After graduating from assisting school Maureen worked for Dr. Bruce Collignon for 31 years. Maureen does several different duties from greeting patients, setting up for dental procedures to assisting the doctor. Maureen enjoys talking and getting to know her patients. Maureen is married to her husband Kenny for 30 years and has two sons, Zachary and Remi. She enjoys being outside and spending time with her pets.

Melanie, Dental Assistant


Melanie received her Dental Assisting certificate from Anthem College and has been in the dental field for four years. She is married to her best friend Josh for two years. She has a 1 year old son and expecting to grow her family in March 2019. She loves to laugh and have fun. She is outgoing and easy to get along with.

Heather, RDH


Heather graduated from East Central College in 2018 with an Associate of arts in liberal studies as a member of the honor society Phi Theta Kappa. She was awarded two degrees from Missouri Southern State University. An Associate of Science in dental hygiene with membership in the honor society Sigma Phi Alpha and a Bachelor of Science in health science with a minor in biology as a member in the Alpha Chi honor society. She graduated MSSU Cum Laude and with Third Honors. Heather is an incredibly compassionate person with eclectic passions. In her spare time she likes antiquing, the performing arts, quilting or yoga with her dog Piper.



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Nikki attended Allied Medical College for Dental Assisting. She has been in the dental field for 18 years and joined Dr. Suter’s team at Green Leaf Dental Care in September 2018. She shares her passion of dental by explaining treatment plan options and helping patients understand their insurance benefits. In her spare time, she loves spending time with her family and friends.