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Friendly, Professional and Here to Serve You

All of our dental professionals at Legacy Dental Health maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in dentistry throughout the year. Our team strives to improve the overall health of our patients by focusing on preventing, diagnosing and treating conditions associated with your teeth and gums.

Dr. Katie Reardon Skinner

Dr. Reardon Skinner’s goal is to make every patient’s experience exceptional. Dr. Reardon Skinner understands that patient communication and collaboration are the most important components to long term dental health success.

Dr. Reardon Skinner transitioned into General Dentistry Limited on January 1, 2014. Dr. Reardon graduated from the University of Denver in 2006 with a Bachelor of Science degree. She went on to additional schooling and received her Doctor of Dental Surgery degree from Creighton University’s School of Dentistry in 2010. Dr. Reardon Skinner is a Sioux Falls native and third generation dentist, following in the footsteps of her mother and grandfather.

Dr. Reardon Skinner has a special gift with children, which makes family dentistry a priority for her. She is also involved in learning the more advanced skill set required for full mouth rehabilitation and implant dentistry.

Dr. Reardon Skinner is currently a member of the American Dental Association, the South Dakota Dental Association and the Academy of General Dentistry. She is also a member of the Young Professionals Network, which allows her to connect with other professionals in the Sioux Falls area. Dr. Reardon Skinner enjoys furthering her education in dentistry and considers herself to be a lifelong student. In her spare time, Dr. Reardon Skinner enjoys spending time with family and friends, traveling, reading and painting.

Dr. Gayle Tieszen Reardon

Dr. Gayle Tieszen Reardon’s practice mission is helping her clients become optimally healthy. She and her staff of dental specialists partner with the client to overcome disease, to correct dental anomalies, to improve dental and facial aesthetics, and to educate for the proper care and maintenance of oral structures (including the teeth, their supporting structures, and their restorations).

Dr. Gayle Tieszen Reardon obtained a Bachelor of Arts degree in 1974 from Augustana College in Sioux Falls, South Dakota.  In 1978, she graduated from the University of Minnesota School of Dentistry located in Minneapolis, Minnesota. She received additional prosthetic training in a non-degree “Adult Prosthetics” program instituted by the University of Minnesota in 1979.  Dr. Reardon joined the dental practice of her father, Dr. Reuben Tieszen, in May 1979. For the next twelve years, her father was her mentor and tutor, nurturing her professional development and technical skills in the profession of dentistry.

Dr. Gayle has served as Visiting Faculty of the Pankey Institute ( since 1998. She has also served on the Pankey Institute’s Board of Directors and its Provost Committee.

Dr. Gayle is active in her community, in her church, and has served on the Avera McKennan Hospital Board of Trustees as well as the Augustana College Board of Trustees. While on the Board of Avera McKennan Hospital, she served as chairperson of the Behavioral Health Hospital Art Committee.

Dr. Gayle and her husband, Tom, have two daughters, Katherine and Kimberly. Katie graduated from the University of Denver in 2006 and went on to graduate from Creighton University’s School of Dentistry four years later. Kimberly is a 2008 graduate of the University of Colorado at Boulder with a major in Communications.

After thirty years of full time clinical dental practice, Dr. Gayle made the decision to pursue a dental diagnostic specialty in the area of Oral and Maxillofacial Radiology at the University of Iowa College of  Dentistry. In 2008, Dr. Gayle began the journey as a non-traditional student professional, completing her program with a Masters in Science degree in Oral Diagnostics and a specialty in Oral and Maxillofacial Radiology. Her specialty training is of particular use in the area of Oral and Maxillofacial Diagnostics and also Dental Implantology Surgical Guidance and Treatment Planning.

When Dr. Gayle is not in her office, she enjoys spending time oil painting, doing bronze sculpture, playing the piano, and trekking with their Cavalier King Charles spaniels, Charlie, Winston, Duncan and Kaiden.

Focused on high quality care and optimal health, Dr. Gayle and her team collaborate with each client to create an individualized plan of treatment that will achieve the client’s desired outcomes. Dr. Gayle is a committed lifelong student, participating in and also teaching continuing education courses with regularity. Her clients benefit from her learning as Dr. Gayle has worked with the best and brightest minds in dentistry.

Marj, Certified Dental Assistant

Marj grew up in Canton, South Dakota and now lives on an acreage just south of Worthing, South Dakota. She joined the Legacy Dental Health team 12 years ago but has been in the dental field for over 30 years. She is very passionate about her work and enjoys interacting with our patients.

She is married to Sherwyn and has two grown sons, Cory and Jared. She enjoys spending time outdoors, gardening and riding motorcycles.

Becky, Registered Dental Hygienist

Becky grew up in Sioux Falls, South Dakota and graduated from the University of South Dakota dental hygiene program in 1995. She joined our office 14 years ago and is passionate about our patient’s oral health and education.

Becky lives in Tea, SD with her husband Brant and her 3 girls Emily, Allison and Sarah. In addition to attending her girls’ activities, she enjoys scrapbooking and spending time with family and friends.

Barb, Registered Dental Hygienist

Barb is a Sioux Falls, South Dakota native and graduated from the University of South Dakota with her dental hygiene degree. Having practiced hygiene for 30 plus years with Dr. Sather, Barb enjoys catching up with our patients during recall visits and calls many of our patients good friends.

Barb is married to Scott and has two grown children, Erin and Brett. She enjoys reading, traveling and socializing with friends.

Vonni Knutson

Vonni Knutson has been a pivotal part of Reardon Dental Health since 1989 when she joined the team as a Registered Dental Hygienist. Vonni feels blessed to be part of such a family-focused, health-centered practice. In her spare time, Vonni is involved in the activities of her church and she enjoys participating in her local community theatre productions. A native of Mitchell, South Dakota, Vonni and her husband, Steve, live near Centerville, South Dakota.

Donna Knutson

Donna Knutson has extensive experience in the dental profession. She has worked as a dental assistant and receptionist but has most recently been an office manager in general dentistry, pediatric dentistry, orthodontics and oral surgery. Donna is a Certified Dental Business Manager and is also a member of the National Association of Dental Assistants, the American Association of Dental Office Managers and an allied staff member of the South Dakota Dental Association. Donna and her husband Russ live in Harrisburg, South Dakota. They have two married children and three grandchildren. In her free time, Donna enjoys spending time with family, gardening and landscaping, and baking.

Dental Care for the Whole Family

Contact us to schedule an appointment with Dr. Katie Reardon Skinner.

Our Core Values

  • Integrity: Working every day with the Golden Rule in mind: “Do unto others as you would have them do unto you.”

  • Loyalty: Respecting the team and making decisions that benefit the team.

  • Competency: Showing the extent of our exceptional abilities in patient care with every service provided.

  • Aspiration to be better: Elevating oneself to be the best person, both personally and professionally, that one can be.

  • Open-minded, positive approach: Approaching each work day with a positive attitude and tackling difficult situations with poise.


Cosmetic Dentistry

A beautiful smile is typically the first attribute we notice about another person. Today, a beautiful, healthy smile is available for everyone.

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Family Dentistry

At Legacy Dental, we believe in a “patient centered approach” to care for your family’s oral health.

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