Our Team


Nathan A. Burns, DMD


About Dr. Nathan


Coretta Ancar

Office Manager


Coretta loves the day to day personal interactions with all parents and patients and is amazing at remembering details about our parents and patients.  With over 20 years of dental experience,  she has enjoyed watching our patients grow into parents that now bring their own kids to our office. Coretta has two grown children herself and loves watching her daughter play collegiate tennis at Xavier.


“My favorite part is talking with our patients and parents each and every day.  I absolutely love it!”
– Coretta


Sarah Villani

Financial Coordinator


Being in the dental field for 20 years, Sarah has worn many hats working in different dental office settings.   This has translated in her being one of the most versatile and well-rounded team members at our practice.  She can literally do it all…administrative work, clinical work, and can fix almost anything.  She is extremely passionate about our practice and loves improving lives one smile at a time. When Sarah is not busy at our office, she enjoys spending time with her family and friends, playing softball and volleyball, gardening, crafting (She hand-makes most of our decorations in the office!), learning how to fix just about anything, laughing, going to festivals, and volunteering for area races. She is also the president of her neighborhood civic association and manages the neighborhood pool.


I love going above and beyond to wow parents with our excellent customer service.  I wish all businesses treated people the way we do.– Sarah


Ann Ganucheau

Front Desk, Scheduling Coordinator


Another seasoned veteran on our team, Ann first worked in general dentistry with adults but quickly switched to pediatric dentistry due to her love for helping children.  She is also multi-talented and is able to work the front desk and help out on the clinic floor.  She loves traveling, music, and spending time with her two grown children, her lovely granddaughter, and the rest of her family.


“My favorite part of the day is watching the children that are afraid when they walk in leave smiling and happy after having a great experience at our office.” – Ann


Allison Dempster

Front Desk, Scheduling Coordinator


I have worked in the dental field for over 13 years but recently switched to pediatric dentistry. This is by far my favorite place to be.  I love working with Dr. Burns and our amazing team. I am a mother of two boys.  I enjoy being outdoors and will try to find any reason to be outside on my time off.  I love sports, reading, and dabble in painting every now and then.


I love interacting with all people, no matter the age.  It’s a joy to watch the different personalities of the children in our office.” – Allison


Ashley Charree

Certified Expanded Duty Dental Assistant
CPR Certified


Born and raised in Metairie, Ashley grew up as a patient in our practice, coming here with her two older brothers and younger sister.  Ashley always dreamed of becoming a dental assistant at Great Big Smiles and achieved that dream in 2011.  She enjoys traveling to foreign countries, making people smile, being a great wife, and being a mom to a furry four-legged son named Fynn.  Be sure to ask her about her travels!


 I love helping kids that have had bad dental experiences in the past.  I truly want to help them overcome their fears, so that they will end up loving the dentist” – Ashley


Roshell Hall

Certified Expanded Duty Dental Assistant
CPR Certified


Born and raised in New Orleans, Roshell became a Great Big Smiles team member in July 2016.  She loves working with kids and learning new things. Roshell has two beautiful children, Gabrielle and Gabriel. When she is not working hard at our practice, she loves spending time with her family at the park, watching movies, and getting some well needed rest.


I absolutely love working with Dr. Nathan and our wonderful team.  It’s always a fun time, especially working with the little kids!  I wouldn’t change it for the world!” – Roshell


Lindsay Higgins

Certified Expanded Duty Dental Assistant
CPR Certified


Born and raised in Mandeville, Lindsay has always had a passion for working with kids and special needs children. She loves making kids laugh and helping them have a great dental visit, whether it’s their first time or 20th time. In her spare time, she enjoys cooking, trying new restaurants, and being a mother to her cat Muffin. 


 I absolutely love working with special needs children, as I always strive to make their visit comfortable and easy. Working with children and watching them grow has always
come natural to me
” – Lindsay


Mary Saballos

Certified Expanded Duty Dental Assistant
CPR Certified


Mary was born in Nicaragua, but raised in New Orleans.  Being the oldest of six children, Mary has always had a passion for helping and working with kids.  In her free time, she enjoys spending time with her family and coaching and playing soccer. 


“I truly believe that Great Big Smiles is the place to be!” – Mary


Madeleine Roy

Dental Assistant


Another former patient at our office, Madeleine has dreams of using her experience with our practice to become a dental hygienist one day. Madeleine is a great multitasker and can be seen running around the office doing each and every little thing to make our office run as smoothly and efficiently as possible. In their spare time, Madeline enjoys spending time with her friends, her large family, and going to their fishing camp.

I love working in the friendly environment that each team member works so hard to create. It truly is a mini-family, and I’m so thankful for the opportunity I’ve been given. Not only do I have a great team, but I get to work with kids, which makes my job even better and more fun!” – Madeleine