Leslie Hayes and her team of professionals are here to provide you with the best possible service. Learn more about the qualifications of our amazing team.

Leslie Hayes, DDS is a Bozeman dentist.

Dr. leslie hayes

Born and raised in Livingston, Montana, Leslie Hayes completed her undergraduate work at MSU in 1986, here in beautiful Bozeman.  She achieved her DDS degree from the University of Minnesota in 1991 and immediately moved back to Bozeman to start her practice in 1990.  She is the current President of the Montana constituent of the Academy of General Dentistry (AGD), is the current chairman of the AGD Fellowship Exam Committee Team C.

Welcome Dr. Andrew Freund DDS, a wonderful addition to our dental team.


Dr. ANDREW Freund

Dr. Freund grew up right here in Bozeman, MT and completed his undergraduate degree at Montana State University before attending dental school at the University of Washington. Before moving back to Bozeman, he practiced in Billings, MT where he enjoyed the Montana lifestyle and getting to practice in his home state. He enjoys creating beautiful, healthy smiles and providing a positive dental experience for his patients. Outside of the office, Dr. Freund loves spending time with his family, skiing, watching college football and enjoying a cup of coffee. Dr. Freund is proud to live and practice in his hometown!

Meet the Team



Hi there! I am a dental hygienist on Dr. Leslie Hayes’s dental team. I have had the privilege to work with Dr. Hayes since 1992. It is our goal to provide every patient quality dental work in a clean comfortable setting.  Our team members truly care for every patient and want to provide each person with the best dental experience possible.

I grew up in Big Timber, MT and then attended hygiene school in Sheridan, WY, going on to the University of Wyoming where I attained a BS in Dental Hygiene with an emphasis on public health.  After graduating in 1988, I worked in Wyoming and Colorado and spent summers working for the State of Colorado Migrant Program. I then moved back home to Montana to continue my career in dental hygiene.

I am married and have two children.  Our family is very involved in most sporting events. We love to spend time outdoors and spend summers camping in our favorite Montana spots.


meet: Sadie Straughn

office administrator

I joined Dr. Hayes team in February of 2019 and am relatively new to the dentistry field. Each individual in this practice strives to give the best care possible to each and every patient. Working with such awesome professionals has gotten me over my fear of the dentist. I feel very grateful to work with the team that we have here.

I was born and raised in Baltimore, Maryland. I move to Bozeman 11 years ago to attend Montana State University. I have a degree in Elementary Education and have enjoyed working with children in both medical and educational settings. When I am not working, you can find me outside. I love hiking, camping and playing outdoors with my husband and dogs.

MEET:Delilah Carden

Dental Assistant

I first started working in Dentistry in 2015 in Jackson Wyoming where I fell in love with mountains and dentistry.  Over the years I have had so many wonderful opportunities to experience dentistry changing peoples lives in the best ways. I feel very grateful to have been able to move from one great dental office to another. Dr Hayes has built a wonderful practice here with an amazing, knowledgeable, caring staff that I am happy to be a part of.

When I am not working I am an ultra-marathon trail runner and spend as much time as possible outside running. I also enjoy camping, hiking, biking, cooking and spending time with my cat.



meet:Betsy Cordes


I joined Dr. Leslie Hayes practice in August of 2017. I have been in Dentistry for 38 years and I feel very fortunate to be able to practice in such an outstanding practice with a very talented, caring team. I am very committed to delivering the best dental and wellness care that is available and maintaining a high level of education on current dental procedures and therapies.

I live the health that I present to my patients and try to be a good role model. As a competitive athlete my summers are spent bike racing and winters are spent coaching and Nordic ski racing. My other interests include trail running, camping, backpacking, interior design and cooking.


DENTAL HYgienist

My career as a dental hygienist started in 1996.  I have worked for Dr. Hayes since 2007. It is a fantastic practice and I feel grateful to be part of it.  I am fortunate to work with wonderful colleagues, who all strive to achieve the best care for and dedication to our patients.

I love the personal relationships built with my patients and that I am able to provide them with the opportunity to have the best oral health.

Outside of work, I enjoy spending time with my family, treasuring every moment I have with them.  Born and raised in the Gallatin Valley, I enjoy being outdoors and love everything this area has to offer.


meet:melissa jeffers


I first started working in dentistry in 2015 and fell in love with it and make it my beautiful career. I feel so very fortunate for the opportunity to work with Leslie as a dental assistant and for her teaching me everything in dental. I’m proud to work with a team who strives to give the best care to our patients.

I love the personal relationships I build with patients and making them feel very comfortable when they come in for their oral health.

When I’m not working I love to spend time riding my dirt bike with my guy, hunting in the fall, or hiking with my dog beast.

Dr. Hayes and Dr. Tim are awesome! They are highly skilled as well and exceptionally friendly. The office staff is great as well.
— Barb E.