Meet The Team

(406) 494-7033

At the core of our dental practice is a friendly team of professionals that are dedicated to your utmost comfort and optimal oral health. We view each patient as a unique individual, and tailor each treatment to your specific needs. As part of our commitment to providing close, personalized attention to every patient, we want to encourage patient communication. Please know that we are here to provide outstanding patient care, and that we value the trust you have placed in us.

Lois Difronzo

Registered Dental Hygienist

Lois graduated from Carrol College in 1985 with a Bachelor of Arts degree in Dental Hygiene. She moved from Helena to Butte, and worked for Dr. Stephan Jones from 1985-1990 and started working with Dr. Herzog when he acquired the practice. Lois is very enthusiastic with all of her patients. Her patients are like friends and family. Lois likes to golf and watch sports with her husband Pat. She also likes to paddle board with friends at Seeley lake.

Dar Costle

Dental Assistant

Dental Assistant since 1991, Dar was born and raised in Butte Montana. She enjoys spending time with her husband Dan and daughter Carli.


Patient Care Coordinator/Dental Assistant

Julia was born and raised in Butte, America. She has been in the dental field for 7 years. She is knowledgeable in insurance, billing, and treatment coordination as well as the clinical side of treatment. She absolutely loves greeting our patients with a warm smile, getting to know each patient and forming relationships for years to come. When not in the office, she enjoys skiing, camping, and fishing with husband matt and son Grae.


Dental Hygienist/ Office Manager

Kristy was born and raised in Butte and has been an active part of the dental field since 2008. She started as a dental assistant in public health where she became passionate about dentistry. This passion inspired her to further her education by becoming a Dental Hygienist. Kristy graduated from University of Anchorage Alaska in 2018. She is very focused on patient education and providing the best care for her patients - striving to provide a pleasant dental experience that is catered to your specific needs.

Kristy is married to Corey and enjoys running the dental practice beside her husband. She enjoys spending time with her family: Corey, daughter Paige, and son Sammy - hiking, biking, camping, fishing, and all the beauty Montana has to offer.  

Healthy Smiles

What does your smile say about you? Let us help you radiate confidence with a healthy smile.