When you visit our friendly team, our dentists will do everything possible to give you quality care—and our team will work hard to help. Whether you are interested in cosmetic, general, or restorative dentistry, Dr. Henry, Dr. McCown and Dr. Johnson are here to help. We invite you to contact us at Tier One Dental today if you would like more information about our dental care in Seguin, Texas.


Administrative Team


Dee Dee – Office Manager/Registered Dental Assistant

Dee Dee is our Office Manager and began her career here in 1987. She is a Registered Dental Assistant with Nitrous Oxide Monitoring and Coronal Polishing certifications. She has extensive knowledge of all aspects of a modern and cosmetic dental practice. She is one of the key reasons for our continued growth and success. Dee Dee’s friendly and outgoing personality helps put our patients at ease and makes their visit to our office more enjoyable.


Mona – Business Assistant/Registered Dental Assistant 
Mona is our Business Assistant and recall coordinator and joined our team in the spring of 2009. Mona brings with her a wealth of experience in customer relations and business management. She has certifications as a Registered Dental Assistant and Nitrous Oxide Monitoring. Her excellent organizational skills and bilingual ability makes her perfect for maintaining our appointment schedule.


Katie – Appointment Coordinator/Registered Dental Assistant 

Katie joined the Tier One Dental team in January of 2011. She is our appointment coordinator and plays a vital role as the first person to greet and assist patients at our office as well as a multitude of other office responsibilities. She is a Registered Dental Assistant and is certified in Nitrous Oxide Monitoring. With her previous hospital emergency room experience and great personality, Katie is the perfect person for this position.


Hygiene Team


Tammy – Registered Dental Hygienist

Tammy is an original team member, first joining Dr. Henry in 1980 as a dental assistant. After completing dental hygiene school at the University of Texas Health Science Center in San Antonio in 1983, she returned to become the head of our hygiene department. With Tammy’s years of dental hygiene and cosmetic dentistry experience come the extensive knowledge and skills that enable her to provide our patients with outstanding dental care. Knowing that a healthy smile leads to better overall health, Tammy’s goal is for all of our patients have beautiful and healthy smiles!



Pam – Registered Dental Hygienist

Pam is a registered dental hygienist and joined us in 2002. She received her degree in dental hygiene from Bee County College in 1980. Her light-hearted but caring demeanor coupled with many years of dental hygiene experience has proven to be a huge asset to our practice and patients. With Pam’s assistance, our patients always seem to leave our office with a big, bright, healthy smile!



Shelley – Registered Dental Hygienist

Shelley entered the dental profession as a chairside dental assistant working for Dr. Henry during the 1990’s. She came to realize her main interest was dental hygiene and decided to attend dental hygiene school at Coastal Bend College in Beeville where she earned her Registered Dental Hygienist degree in 2004. In December of 2010 we were thrilled to have Shelley join our team again as a dental hygienist. Her gentle touch and pleasant personality are appreciated by everyone and we are proud to have her exemplary skills and talents as part of our Tier One Dental team.


Dental Assisting Team


Jenny – Registered Dental Assistant

Jenny has been a member of our office since 2006. Jenny is a Registered Dental Assistant, and is certified in Nitrous Oxide Monitoring. Jenny loves being part of the Tier One Dental because we treat our team members like family. Tier One Dental believes in giving quality, individualized care to our patients. Jenny is experienced and knowledgeable in the front office as well as clinical areas, and is able to help patients in many different areas when they visit.



Dawn – Registered Dental Assistant

Dawn began her career as a Registered Dental Assistant in 1998 and has been a member of our team since 2012, and is certified in Nitrous Oxide Monitoring and Coronal Polishing. She enjoys working at Tier One Dental because it is a state of the art facility offering our patients the latest in equipment, technology, and products. Her skills and techniques, along with her friendly and calming demeanor, work together to make each patient’s visit is as comfortable and pleasant as possible.



Chrissy – Registered Dental Assistant

Chrissy joined the Tier One Dental Team in 2013 after completing the Dental Assisting Program with Allied Health Careers. She is a Registered Dental Assistant and has Nitrous Oxide Monitoring and Coronal Polishing Certifications. Her personality is quiet and calm, which puts her patients at ease making their dental experience as pleasant and comfortable as possible.