Meet Our Staff


Our staff is uniquely trained and highly skilled, and we strive to provide energetic and fun-loving service to each patient. We pride ourselves on the valuable level of experience our team has accrued: our front office staff have an average of nine years with our practice, and clinical staff members have an average of eight years in our office. We undergo specialized training and multiple certifications, including the AAO assisting program. And we strive to stay abreast of the very latest in technology and advances by regularly attending continuing education courses and seminars.

To experience the difference that only a well-trained, professional and courteous team can deliver, schedule your appointment with our office today!


Hi There! I am the office manager at Advanced Orthodontics. I have worked with Dr. Nielson for 22 years! I started working for Dr. Nielson in high school and never left! He is a great person to work for and has become a close friend of mine. I know you'll enjoy coming to see us! When I'm not at work, I love to spend time with my husband, Jeff and our two sons, Kody and Hunter. I love to read and take our dog on walks. I look forward to meeting you!


Hello! I am the scheduling coordinator at Advanced Orthodontics. I keep busy answering the phones, making appointments and managing payments. I enjoy meeting and chatting with the parents who come in, and catching up with all our patients! I also work at Olive Garden in Southlands and love when our patients come to say hello to me. I have been married for 30 years and have four amazing daughters.


I am one of the treatment coordinators here in the office.  I really enjoy meeting our new patients and welcoming them into the practice.  Dr. Nielson has treated all four of my boys as well as my husband. Soon after that, I had the opportunity to work here at Advanced Orthodontics.  When I'm not working, I'm travelling to see my grown children who live from coast to coast.


Hello, I am the billing and insurance coordinator. I handle all the insurance and contracts for the patients in our office. I am the woman you call to find out about your bill or insurance coverage! It always makes me happy to help our patients make the most from their insurance coverage. When I'm not in the office, I enjoy spending time with my wonderful husband, our two dogs Gus and Bella, and our grandchildren.


Welcome to our practice! I am the clinic coordinator at Advanced Orthodontics. My main goal is to make sure that the patients are seen in a timely manner and keep the flow going. My favorite part of my job is putting the braces on and taking braces off. I love seeing beautiful smiles! I love summertime and going to the movies.


Welcome! I have been with Dr. Nielson for 5 years now. I started as a scheduling coordinator and put a tremendous amount of effort into learning to be an assistant. I enjoy meeting new patients and making them feel comfortable here. In my time off work, I love to read and spend time with my three sisters.



Hi there! I am an orthodontic assistant. Working here gives me the opportunity to work with both adults and kids, and see what a difference a great smile can make. What I enjoy the most about Advanced Orthodontics is being a part of an awesome team. Working with happy people in an organized environment makes this a fun office! In my free time I love to hang out with my family. We love to have picnics in the beautiful Colorado mountains.



As an orthodontic assistant to Dr. Nielson, I am able to help create beautiful smiles. I am also the Invisalign Coordinator.  I also take care of ordering all the clinical supplies. I enjoy being a part of such a fun team! In my free time, I love being outside, camping, canoeing and fishing with my family.



Hello, my name is Krystal Van Buren.  I am an orthodontic assistant here at Advanced Orthodontics.  I have been in the field for over 11 years and still find myself very passionate and excited about my patients and what I do.  In my spare time, I enjoy spending time with my family, cooking and singing.



As the sterilization coordinator, I make sure all our instruments are clean and the office is stocked with the supplies we need to take great care of you! I have worked for Dr. Nielson for 10 years and I love it! Our practice is a ton of fun, and we take great care of our patients. In my spare time, I love being with my family and watching movies.



Hello, my name is Madeleine Bergener and I am a receptionist here at Advanced Orthodontics.  I work next to Tiffanie and Shellie.  They have the best sense of humor and are amazing ladies to work with.  I answer the phones, schedule appointments and help with new patients.  I love my job and all the people that I get to work with everyday.  I am the oldest of 6 children, so when I am not at work, I am at home with my family, out with friends or with my lovely boyfriend.



Hello, my name is Lucille Cole, better known as "Lu".  I am the bookkeeper / payroll specialist here at Advanced Orthodontics, where I love working alongside such great people.  In my spare time, I enjoy reading, and site seeing in this beautiful state of Colorado.  I also enjoy bicycling, hiking and just walking around my neighborhood with my dog, Shadow.



Hello, I'm an orthodontic lab technician here at Advanced Orthodontics. I make retainers and expanders, and I enjoy working with my hands to create the most personalized and comfortable appliances for our patients. It makes me feel good when patients tell me they can hardly notice when there's an appliance in their mouth! I am originally from Hawaii and used to be a professional surfer! Aloha!!