Meet Our Team | Gary M. Holt | Littleton and Highlands Ranch CO

Lisa S.

We had checked out several practices before we came to see Dr Holt and we really liked the energy that their office had. Hannah decided that was the place for her. It made her feel comfortable and as she had had a bad dentist experience when she was young, her being happy was very important to us. Tina was very helpful, she also helped us find a new dentist & even made the call to check out the insurance coverage for us! The front desk makes every effort to accommodate apts when a bracket needs replacing!! Hannah is looking forward to seeing her canines in the correct place and she will feel a little more confident when they are down I would definitely recommend Dr Gary Holt to anyone who is looking for a safe, happy , efficient environment for their children.

Clarissa T.

Very hardworking office! Super organized, friendly, attentive and competent. Everyone is treated very special. We are pleased to refer out. :-)

Janie C.

Dr. Holt and his staff are more than just ordinary, they are EXTRODINARY!!!! The staff from the front desk to the back office have great customer service and orthodontic skills and are always very professional. Dr. Holt is great also, very freindly, chatty and has a great sense of humor. Would highly recommend Dr. Holt to my friends and family.

Meet Our Team

We are especially interested in making all our patients feel right at home! We put your needs first to achieve efficient and comprehensive treatment. Our staff is trained and skilled, and we strive to provide energetic and fun-loving service to each patient. Each member of our treatment team is a registered assistant, and our office staff has years of experience in treating patients with the highest level of care. We strive to stay abreast of the very latest in technology and advances by regularly attending continuing education courses and seminars.

Office Manager


Tina has been a member of Dr. Holt’s orthodontic team as Office Manager and Treatment Coordinator since 2005. She is a Colorado native and has three grown daughters, two teenage sons and is the proud grandma of I granddaughter Brooklyn and 2 grandsons Tristian and Jaxon. In her spare time she enjoys spending time with family and friends and boating out at Chatfield Reservoir.


Clinical Staff


Maureen has been in the orthodontic field for 29 years. She has enjoyed seeing all the changes. She has been with Dr. Holt for four years. Maureen has two grown daughters and her third granddaughter is on the way. She and her husband love spending time gardening and hanging out with their children.


Stephanie studied dental assisting for over a year before moving into orthodontics. She has been a part of Dr. Holt’s practice for over 4 years and has a daughter in elementary school. For fun she enjoys taking her daughter to the zoo and aquarium, along with spending time with her sister and nieces and hanging out with friends.


Jill has been in the orthodontic field for over 11 years and has spent most of her years working with Dr. Holt. She has lived in Colorado for over 20 years and enjoys camping, hiking and swimming.


Mallory has been a part of Dr. Holt’s fabulous clinical team for 6 months now but has 11 years of experience in the orthodontic field. She moved here this past summer with her husband from the great city of Chicago. In her spare time she enjoys photography, baking, watching the Chicago Blackhawks She looks forward to meeting you and helping you with your orthodontic needs.


Hello, my name is Danielle. I worked in child care for 7 years with infants, toddlers and ran the summer camp program for school ages. I have 5 kids. My oldest left in August 2016 to join the Marines. I enjoy spending time with friends and family outdoors. I’m excited to join Dr. Holt’s team and to take this different career path.


I have lived in CO. since I was 5 years old. I am the youngest of 2 other siblings. I graduated from Eagle Crest High school in Aurora, CO in 2004. I knew I wanted to be in orthodontics when I was 15 years old, when I started summer training at an office where my older sister and mother worked. I then went into orthodontic assisting full time. I am very passionate about the smiles I help create. I have 3 wonderful children who are all actively involved in their own passion of baseball, cheerleading and karate. My favorite hobbies are to cook, travel and lounge beachside.