The team at Twin Buttes Dental is devoted to a successful outcome for your whole dental health.  We will strive tirelessly to give you the best care, to continue to update and improve our techniques and practices, and to help you to feel comfortable and informed.

You will see us smiling as you enter our doors – that’s because we enjoy what we do and we enjoy the opportunity to see you!

Find Dr. Zachery Green’s bio HERE.


Trish Thomas, RDH, BA

Trish is a registered dental hygienist. She is originally from southern Florida but has lived in Colorado since 1994. She received her undergraduate degree in Kinesiology at the University of Colorado-Boulder in 2000 and her degree in dental hygiene at the Community College of Denver in 2004. She is passionate about helping people improve and maintain good oral health.

Trish enjoys mountain biking, nordic skiing, snowboarding, camping and playing outdoors in beautiful Durango with her two boys.

Deanne Peterson - Dental Assistant at Twin Buttes Dental - dentist durango co

Deanne Peterson

Deanne Peterson was born and raised in Durango, Colorado. She attended the National Education Center in Phoenix, Arizona receiving her degree in Dental Assisting. Deanne has a daughter, two dogs and a cat. They enjoy hiking, biking, Nordic skiing, running, snow shoeing, camping and living in Durango. Deanne joined the practice in 1994.

Debbe Speck

Debbe Speck was born and raised in Dallas, Texas. She fell in love with Colorado during a vacation trip and moved here shortly thereafter. She has called Durango “home” since 1981 and has worked in the dental/ medical community since that time. She joined Dr. Jeff Nelson’s staff in 1994 and had worked with him for 21 years, before his retirement. She is now on board and happily working with Dr. Zachery Green. Her hobbies include camping, hiking, boating as well as cross country skiing with her husband and black lab Colton. She feels fortunate to be a part of Twin Buttes Dental’s dedicated and professional team. She truly enjoys and appreciates her “fine family” of patients.

Jennifer Mcmillen

Jennifer was born and raised in Fort Wayne Indiana.She has an undergraduate degree in  both Public Relations and Speech Communication as well as a Masters Degree in Merchandise Marketing. Jennifer briefly lived in Durango from 1996-1998 but  decided to moved to Florida to be closer to family. During her time in Florida she spent 10 years as a manager at Mark Loren Designs. In 2016 she decided to make the move back to Durango. Jennifer joined the Twin Buttes Dental Family in June 2018 and is thoroughly enjoying the career change. She enjoys spending time with her daughter Jesse and their 4 dogs. When she isn’t working you can find her hiking, gardening, reading, traveling or spending time with her family on Flathead Lake in Montana during the summer.