Our Staff

Medical Director

Ann Nolen, D.O., attended medical school at the University of North Texas Health Science Center. She is board-certified in both family practice and anti-aging medicine. Her interest in anti-aging and medical aesthetics has become a passion. She is trained in Botox and Dermal Filler injection techniques and has over Ten years of injectable experience. Today, as the Medical Director of Calista Skin and Laser Center Dr. Nolen enjoys helping people regain their youthful appearances through the advanced anti-aging and aesthetic procedures.

Nurse Practitioner

Dayna M. Vestal RN, FNP-BC, received her Bachelor of Science in Nursing from Texas Woman's University and a Master of Science in Nursing from Texas Tech University. Her areas of practice include women's health and medical weight management and she is a certified BioTE medical practitioner. Dayna also has received advanced training in medical aesthetics and is a certified Botox and dermal filler injector.

Professional Laser Technician

Laura Whitley, MA, PLT, is a state certified Professional Laser Technician which is the highest certification in the state of Texas. She has received advanced laser training from Syneron and Candela on the most advanced laser procedures available today. She has over 17 years’ experience as a laser technician and has an incredible amount of experience in virtually every aspect of aesthetics and her passion is helping people achieve their aesthetic goals. Laura has spent most of her career in the Colleyville area.

Licensed Esthetician & Certified Laser Technician

Kirsten Sedino LE, CLT, is a licensed Medical Esthetician and a Certified Laser Technician. Kirsten was trained in a variety of laser modalities at the National Laser Institute, Dallas, TX. She was the Director of Aesthetics at a MedSpa in Dallas prior to joining Calista. She strives to provide safe, non-invasive cosmetic procedures helping her clients achieve the best results to look and feel their best. When Kirsten isn't at Calista or at home with her two kids you’ll find her helping her husband Andy at their new Restaurant "Meat U Anywhere BBQ" in Grapevine, TX.

Owner / General Manager

Dan Schildgen graduated with a Bachelor of Science degree in biology from The University of South Florida. He retired after a career in pharmaceuticals and several years ago made the decision to go into aesthetics and opened Calista Skin & Laser Center. His greatest satisfaction is “helping people feel more confident about their appearance, ultimately seeing them become happier and more outgoing. As a result, they lead more active and healthier lifestyles.”


Marguerite Schildgen and her husband Dan opened Calista in 2012. Marguerite had been a client of Laura's over the years and she knew that Laura was one of the best when it came to laser skin care. Marguerite works part-time as a receptionist and on Wednesday Botox evenings.


Lisa Stewart is a graduate of the University of Texas. She is married to Mike Stewart and has two children. After numerous career relocations around the U.S. and Australia her husband’s career finally brought them to Colleyville. Lisa loves living in Colleyville and after years of being a stay-at-home mom has enjoyed going back to work. She is a natural in this business and truly understands aesthetics. You will appreciate Lisa’s knowledge and her ability to help you select the procedure that’s right for you…you’ll never feel pressured.

Medical Assistant

Courtney Cooper, CPT, MA, graduated from TCC with an Associate's degree and continued her education at Concord Career Institute where she received her Phlebotomy and Medical Assistant Certification in 2013. Courtney came to Calista in 2013 where she performs various medical procedures. She grew up in Arlington, TX until she met her husband; she now lives in Crowley, TX.

Call and make your appointment today 817-203-4925