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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!


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.


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 not 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.

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Office Hours

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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