Our Team


Sandy Costello

Office Manager

Hi! I am Sandy, the office manager for Fenton Family Dentistry. I graduated from Missouri College in 1997 and received my Expanded Functions license in 2010. I have seen a lot of changes in the dental field with over 20 years of experience. Fenton Family Dentistry is using cutting edge technology to take their dentistry to the next level, making me fall in love with dentistry again! I strive to make every patient feel at ease and do whatever it takes to make your visit a fabulous one. My goal is not only make each visit go smoothly, but also make each patient feel at ease and build a lasting relationship. I have been happily married to my husband since 2009. With our 2 daughters all grown, we are enjoying spending more time together. When I am not at work, you can find me doing a wide variety of things: photography, refinish furniture, camp, fish, hunt, and ride ATVs.


Sandra Ball

Clinical Director

Hello my name is Sandra and I am the Hygiene Coordinator for FFD. I have been with FFD for almost a year and have been in dentistry for over 30 years.  FFD is truly one of the best and rewarding dental offices I have worked with. I love that FFD is a family based practice so that we can have a true life/work balance. I am able to keep my Faith, Family and Career in balance at all times. I am married to my wonderful husband Ken and we have 3 children and 3 grandchildren that we adore.  Ken and I love to spend our weekends taking long drives, riding our motorcycle, taking lots of pictures of old barns and wildlife, and watching our oldest grand son play high school Basketball.

I am also a Mary Kay beauty consultant for over 20 years and love making women feel important and beautiful. My hobbies include: sewing, quilting, reading my Bible, praying, singing, playing piano, and gourmet cooking.


Jenny Jacobs

Registered Dental Hygienist

Hello, I’m Jenny, a registered dental hygienist at Fenton Family Dentistry. I’ve been a practicing dental hygienist since 2010 and have enjoyed working in the dental field since high school. I enjoy being part of a team that creates healthy happy smiles. When I’m not flossing, I love to travel, spend time outdoors with family and friends and occasionally sit down with a good book.   I cannot wait to see you and help you achieve healthy smiles for life!


Robin Nolen

Dental Hygienist

Hello, my name is Robin, and I am one of the newest dental hygienists to join Fenton Family Dentistry. I have been a dental hygienist for 23 years, serving my patients in both private practice and public health. I personally love to establish a rapport with my patients and enjoy seeing them come back for their cleanings and maintenance visits. Along with cleanings, I take pride in educating my patients about their oral health. I have two children, Sophie and Brady, who are both teenagers and keep me very busy with their lives! I also have a fur baby, Bailey. A hobby of mine is working outside and maintaining the “perfect” yard.


Hillary Allebach

Extended Functions Dental Assistant

Hi, I'm Hillary Allebach! I am an Expanded Functions Dental Assistant here at Fenton Family Dentistry. I am the face you will see helping Dr. Nieva with different activities during your appointment. I graduated from Missouri College in 2010 and have been in the dental field for 10 years and have worked really hard to obtain all the licenses an assistant can in Missouri. I love working with you and answering any questions you might have and helping you feel comfortable during your time at our office. I pride myself on making sure your procedure goes as smooth and painless as possible.

I am married with 3 kids and have 2 dogs. I stay busy with them and enjoy doing photography in my spare time. I am a dental nerd and love to talk teeth any chance I get.