Meet Our Sidney Team

meet our sidney dental time

We recognize that all our patients are unique and deserve to receive dental care that reflects their individual needs. Our experienced and talented dental team is committed to working with you and your family to create a comfortable, stress-free, and rewarding dental experience every time you visit our practice.

We are pleased to welcome you and your family, and we look forward to working with you.



Karen O’Hagan


I was born and raised in Fountain, Michigan! I worked there as a part-time Hygienist and Dental Assistant. I moved to Eastern Montana in December of 2015. This move was highly influenced by my many visits here to see my sister and of course my sister herself, Theresa. I have visited Eastern MT for the last 6 years with the pull becoming harder and harder to resist. Ultimately, I fell in love with Big Sky Country!

Theresa informed me that Big Sky Smile Center was building a new office in Sidney, and this was the final push I needed to make the move west! In July 2015 I started the process to obtain my license to practice in Montana, and by the end of the summer I had my license! Before I knew it I was on a plane to meet Dr. Matthews.

I am very excited and fortunate to be one of the newest additions to the BSSC family!



Rhonda Pierce

Scheduling & Financial Coordinator

I was born and raised in Sidney, Mt. I graduated from Sidney High School in 1990. I have a large family and we are all very close and spend most holidays together. In my spare time, I spend it playing with my grandson. He is very outgoing and loves to run and ride his bike. I enjoy photography and take as many fun pictures as I can, but my photography passion lies within capturing old building and nature. I also love camping with my family! Friends and family are the most important part of life and I love spending as much time with them as I can.

Professionally, I started working for Richland Opportunities, an organization that serves people with disabilities in 1990. I managed the group home and enjoyed working with the people for almost 22 years. In this time I was blessed with 3 great children, Jessica my oldest, and my twins Brady and Sarah. I married my husband Michael in 2009 in Las Vegas at a convention for his work and I was given 2 more children Eli and Abby. We were blessed with a grandson Brandon in 2013. Shortly after Brandon was born I started to working at HD Supply an electrical supply company. I became the operations manager in 2015, but due to the oil boom fading the company decided to close its doors in 2016. I took some time off until I found Big Sky Smile Center-Sidney and started my journey with them. I love being upfront and visiting with all the people who come through our doors. I try to make people smile and make them feel comfortable so their visit is a pleasant one.