Pediatrics Team
Our Providers

Dr. Nathaniel Cook – Director of Pediatrics, Pediatric Dentist


Dr. Quentin Knutson – Pediatric Dentist


Heather Luebben, ADT – Dental Therapist
Heather was one of the first Dental Therapy program graduates in the state of Minnesota and has been with Apple Tree Dental since 2008. Heather has been a crucial member of the pediatric team, helped develop Apple Tree Dental’s Teledentistry program, and helps educate and oversee clinical rotations for Dental Therapy students. She enjoys using her preventive and restorative dentistry skills to help patients improve their overall oral health. Read the rest of Heather’s bio.
Our Hygienists and Assistants

Valerie – Licensed Dental Hygienist
Valerie has been with Apple Tree since February 2018. She loves working with her hands, and she enjoys teaching kids about how to keep their mouths healthy. She can’t wait to take a look at your teeth!

Alisha – Licensed Dental Assistant
Alisha has been with Apple Tree since April 2013 and has her Sedation Monitoring certification. She loves watching kids overcome their fear and accomplish their treatment needs. She is very adaptable and has a special talent working with children!

Natalie – Licensed Dental Assistant
Natalie started working at Apple Tree in 2011. She finds working with children so rewarding and knows that a positive dental experience can affect a child’s outlook on oral health. Natalie has her Restorative Expanded Functions certification, Sedation Monitoring certification, and experience with special needs, general anesthesia, and mobile dentistry.

Madi – Licensed Dental Assistant
Madi started working for Apple Tree in 2021 and has her Sedation Monitoring certification. She enjoys working with Dr. Knutson to help kids learn about oral health and to make good experiences for children who are nervous about coming to the dentist. She’s definitely “the office Elsa”!

Patha V. – Licensed Dental Assistant
Our Administrators

Chandra Stapher – Office Manager
Chandra started working for Apple Tree Dental in September 2004. She enjoys building strong relationships with our patients and their families and watching them develop trust in our staff. Chandra is passionate about Apple Tree’s mission and the impact on the community. Outside of work, she spends most of her time with her husband and two children.

Stephanie – Pediatric Specialty Care Coordinator
Stephanie has been with the Apple Tree family since February 2020. She enjoys partnering with parents to complete the best treatment for their children while making the dentist a fun, safe, and stress-free place for their kids. She is a joyful person who loves to make others laugh and loves to show off her office plants.




What do we look like in the Clinic?
For your child’s safety and for the safety of our staff, we have some special clothes we wear called “Personal Protective Equipment.” We wear masks, coats, gloves, special glasses, and more. But, we’re still the same friendly pediatric team underneath all the special equipment!





