Meet Our Team

Office group photo

Assistants group photoOur Wonderful Assistants
Whitney, Cristina, Jasmine, Tylina, Emily and Lexi


Our team at TMJ Therapy is made up of kind, loving, caring people who have had first-hand experiences with TMJ disorders. Some of our staff members have suffered personally from the condition, and the others have worked closely with those who have. We understand the experience associated with the TMJ disorder, and we are here to help you in any way we can. We look forward to meeting you when you visit our doctors, Dr. Carl McMillan and Dr. Ryan Hart, at one of our TMJ offices in American Fork, North Ogden, and Riverton, Utah.

TannerTanner – Business Manager
Tanner began mowing lawns for our office when he was 10! He is now our business manager, aiding with marketing, finances and helping our patients with insurance. He loves that our practice is all about family.

Tanner and his wife, Ivy, recently had a baby, Juliet. IN his free time he enjoys reading, boating, school and learning.


Jeff – Office Manager
Jeff recieved his bachelor’s degree in behavioral science from the University of Utah, as well as a master’s degree in business. Jeff is married and enjoys spending time with his family. He has seven children who really keep him on his toes! He likes dancing with his lovely wife on the weekends and traveling to exotic locations like St. George, Utah. Jeff looks forward to helping you find answers for your jaw pain.


 Joy Cornell – Billing ManagerJoy – Billing Manager
Joy has been with our team since 2018. She has worked extensively in the medical field and has achieved her CNA certificate as well as being a certified professional coder. She keeps our office running smoothly by handling all the billing and insurance aspects of the practice and appreciates the love and support that each person on our team shows to one another and to our patients.

Joy and her husband have three children and three grandchildren. Outside of the office, she enjoys cooking, reading, scrapbooking and cross stitching.


JennJenn – Billing Assistant
Jenn has been working with our team since 2022 and in the medical field since 2018. She loves the relaxed friendly atmosphere of our office. Jenn is friendly, hard-working and a great asset to our team.

Jenn is married with three children. Outside of the office, she enjoys photography and spending time with her family. She also loves to do a variety of creative hobbies from woodwork to floral arrangements.


KathrynKathryn – Receptionist
Kathryn joined our team in 2020. She completed her Master of Arts in teaching in 2008 from WGU and has a psychology degree and human development degree from the University of Utah. She likes helping patients and seeing their healing process. Kathryn enjoys camping with her family, hiking, gardening, beekeeping, and learning how to paint landscapes from her adventures in the wild.


LornaLorna – Massage Therapist
Lorna is our licensed massage therapist at our North Ogden office for over five years. She attended the Utah College of Massage Therapy and graduated in October of 2010. She had an absolutely wonderful experience with her schooling and loved her teachers and classmates. Now, she loves the team and patients at TMJ Therapy. Lorna looks forward to coming to work each day and making a difference for our patients.