Dental Staff

Dentist in Marble Falls, TX

All professionals at Highland Lakes Dental maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.


Margaret Cowling, DDS

Dr. Margaret Cowling is originally born and raised in San Antonio, Texas. She went to UTSA and UTHSCSA for her undergrad and graduate studies of dentistry. She lived in Houston for two years as a public health provider for the National Health Service Corps in a federally qualified health center providing dentistry for underserved dental populations. After JT and Margaret got married they moved to Abilene, Texas so JT could serve his time in the Air Force. Abilene has a special place in Margaret's heart as that's where two babies were born: Conner, 4 and Zoey 2.  They welcomed the newest addition to their family November of 2017 to a beautiful baby boy named Zayne. Margaret likes to go on walks and play with her kids. Anything related to water and animals is a great time for the family.


Jefferson Cowling, DDS

Dr. JT Cowling hails from Sulphur Springs, Texas where he was born and raised. JT graduated with a bachelor's in Biology from Texas A&M Commerce. Then he completed his Doctorate in Dental Surgery from UT Health Science Center in San Antonio. It was in San Antonio that JT was lucky enough to have met Margaret. After a lot of persuading, Margaret agreed to marry JT. He was one of the few applicants to get accepted into the Air Force Dental Corps. JT served all four years at Dyess Air Force Base in Abilene, Texas. JT and Margaret have three children, Conner who is 4, Zoey who is 2, and Zayne who is 8 months old. The Cowling's are proud to be part of this community and are excited to meet you!


Dr. Matthew Smith

Dr. Matthew Smith was born in Burlington, North Carolina and moved frequently as a child. He attended Washington and Lee University in Lexington, Virginia and attended the University of Texas Health Science Center at San Antonio for his D.D.S. After graduation, Dr. Smith commissioned in the U.S. Navy as a Lieutenant. He completed a General Practice Residency program at Naval Medical Center Portsmouth, VA. After residency, Dr. Smith was sent to Manama, Bahrain. On returning to the U.S., Dr. Smith was stationed at the Washington Navy Yard in Washington, D.C. He is looking forward to serving the needs of Highland Lakes Dental patients.


Shannon Coulson - Hygienist

Shannon Coulson is originally from Memphis, Tennessee. She moved to Texas after marrying her husband, Drew 12 years ago. She attended the Dental Hygiene Program at Temple Community College after her husband graduated the RN program. She has been a Registered Hygienist for 4 years. Marble Falls is the perfect place for them to raise their three busy boys. She is also a member of Lakeshores Church and cannot wait to serve your family!


Jolee Hibler, RDH - Hygienist

Jolee is a Mom of two teenage girls. She is from Wyoming and has been in Texas for 9 years. She is passionate about the dental industry and is excited to bring her knowledge to our practice. She enjoys outdoor water sports and is a huge football fan so she is truly a Texan! She looks forward to meeting and serving the needs Highland Lakes Dental patients.



Nina - Registered Dental Assistant

We didn't think it was possible to have this much awesome in a tiny little package! But it is!! Nina is one of our kind, knowledgeable, and friendly dental assistants. She is a mother to a sweet & adorable daughter. She enjoys being outdoors fishing, hiking and swimming. She currently resides in Bertram and loves it! She is more than happy to help and answer any dental questions you may have!


Tassy Jo Caddel - Front Desk Administrator

Tassy Jo Caddel is a blessed mom of three amazing teenagers, she is awaiting the arrival of her first grandbaby. She was born in Austin, Texas and raised in Leander. She completed her RDA (Registered Dental Assistant) certification at Austin Community College and is thriving and loving working as a front desk administrator.



Melissa Harris - Front Desk

Melissa has loved living in Marble Falls since 2015. She has experience in guest hospitality and relations and likes to provide a positive experience for the people she meets. Her interests include surviving her family of five, upcycling, art, and patroning restaurants based on the quality of their salsa.



Andi

Andi is a blessed mother of two girls. She was raised in Austin, Texas and just moved to the Burnet area in June from Universal City, Texas. Andi has been in the dental field for 13 years and comes with a lot of experience. She loves getting to know the patients, making them comfortable, and educating them on their dental questions. In her spare time she loves traveling, going to church in Marble Falls, spending time with her family, and hanging outdoors.
She can’t wait to greet you with a smile and make your visit with us a comfortable one!

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Office Hours

Our Regular Schedule

Highland Lakes Dental

Monday:

8:30 am-5:00 pm

Tuesday:

8:30 am-5:00 pm

Wednesday:

8:30 am-5:00 pm

Thursday:

8:30 am-5:00 pm

Friday:

Closed

Saturday:

Closed

Sunday:

Closed