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Who We Are


Mindy Oliver


Mindy received her Master of Science in Nursing from King University.  She received her certification from the American Academy of Nurse Practitioners Certification Board.  Mindy always knew she wanted to be in the medical field growing up.  After years of ICU bedside nursing, Mindy believed she found her calling as an Advanced Practice Registered Nurse.

Outside of work, Mindy enjoys traveling and spending time with her family.  Jeremiah 29:11 is one of her favorite verses.  “For I know the plans I have for you,” declares the Lord, “plans to prosper you and not to harm you, plans to five you hope and a future. 


Jana Gibson

Operations Manager

Jana is our Operations Manager. She graduated from Brookstone College of Business in Charlotte, NC
and has been in the medical field since 1996. Jana has worked in the vein world for 14 years. Her experience in many different aspects of this industry gives her a unique understanding of what it takes to give quality patient care. She is committed to helping patients with insurance needs and wants
patients to have a great experience when they visit Living Water Vein Institute and Aesthetics. Jana has been married for 25 years and has two children and 3 dogs. She loves the Lord and her church. In her spare time, she loves spending time with her family.

Liz Johnston

Ultrasound Tech

Elizabeth M. Johnston is our ARDMS Registered Vascular Ultrasonographer.  She served in the US Army for two years.  Liz graduated with honors from Capella University and has a BSIT in Health Informatics and a MS in Public Safety, Criminal Justice.  She previously worked at Bristol Regional Medical Center and Holston Valley Medical Center.  Liz’s favorite aspects of her 21-year career is educating patients about vein functions, bonding with patients, and seeing improved patient outcomes after treatments.  


Liz is a mother of five children, grandmother of five children, and lives at home with her husband, two grandchildren, and three cats.  She loves to read, take walks and hikes, and sometimes play console or PC games.  

Kristen TallmanLicensed Aesthetician
Kristen is a Licensed Aesthetician in the state of Tennessee, and a 2012 English graduate from Belmont University in Nashville, TN.
She completed her training in esthetics through the AVEDA program in Dallas, TX, and holds her Health Coach certification from the Institute for Integrative Nutrition. She is passionate about holistic wellness and incorporates this philosophy into all her skin care practices and recommendations. Her goal is to provide an indulgent, relaxing service for clients that delivers beautiful results! In her spare time, Kristen enjoys being with her family and exploring the natural beauty of home by taking camping trips and hikes whenever possible! 

Marissa Shelton

Administrative Assistant

Marissa is our Administrative Assistant at Living Water Vein Institute and Aesthetics. You will find her working on incoming referrals, assisting with precerts and various other tasks around the office. Marissa has been working in the medical field for the last 8 years. She is passionate about assisting patients in any way. Aside from work, she enjoys spending time with her fiancé, her 3 fur babies (Neyland, Naomi, and Sutten) and keeping up her freshwater fish tank.