Our Staff

Nicole Kemerer - Office Manager & Medical Assistant


Nicole’s passion is the medical field. With degrees from the State College of Florida and Meridian College, she brings a high level of energy to our office. Nicole is Dr. Barnett’s right hand, assisting in surgery, pre and post care treatments, and running the medical office. 

Julie Gylstorff – Front Desk Coordinator


Julie comes to us with over 6 years of experience. She is the first smiling face you see when you walk into the office and the friendly professional voice that assists you with scheduling your consultation and follow up appointments. 

Lindi Klinger – Patient Care Coordinator


Lindi was born and raised in Naples Florida. Lindi has lived all over the country but her heart fell in love with Sarasota. She is here to stay, with her husband and mini Schnauzer “Lynus”. She has been working in the medical field and as a licensed esthetician for 15 years. Lindi is currently going to school to get her degree in Marketing. She loves fitness and fashion but her number one passion is beauty. 

Monica Guevara – Patient Care Coordinator / Office Assistant


Monica has been in the medical field for over 10 years. She has been with Dr. Barnett since 2015. She can help you with every aspect of scheduling your surgery from pricing to dates to where to stay, she even gives great recommendations to our out of town patients on where to eat while visiting beautiful Sarasota. 

Yaneli Guevara - Medical Esthetician



Yaneli was born and raised in beautiful sunny Sarasota. She is a licensed medical aesthetician who joined our practice in 2015. Her professional resume includes over 5 years of experience in the medical spa field. Her time working in a Medical Spa and Plastic Surgeons’ office has made her well rounded and exceptionally knowledgeable in aesthetics. Yaneli is certified in many rejuvenating and anti-aging treatments, including chemical peels, microdermabrasion and dermaplaning. She also holds a certification and license in Microblading. Yaneli’s training and professional enrichment is ongoing. She has worked side by side with Dr. Barnett and her staff to help patients achieve outstanding post-surgical outcomes. One of Yaneli’s greatest passions is working closely with her clients to achieve the maximum results for their skin while consistently providing a relaxing rejuvenating experience. 

Louanne Lewis - Medical Esthetician


Lou Anne is a Registered Respiratory Therapist and Facial Specialist licensed in the state of Florida. She has been employed with Dr. Marguerite Barnett since 2001. In addition to providing both basic and advanced skin care she has also served as the physician’s primary assistant and the office safety director. She has an extensive and varied medical career and is well informed in subjects as far afield as cardiopulmonary physiology, management and computer languages. Lou Anne’s advanced skin care training was completed majorly through her membership in the American Society of Plastic Surgery Nurses and under the tutelage of Dr. Marguerite Barnett. She is a perpetual student and enjoys sharing her knowledge with co-workers. Furthermore she has been an Associate Professor at then Manatee Community College and served as a clinical educator for Indiana University – Purdue University at Indianapolis and also for California College. She has developed and presented inservice programs for many of the area hospitals and has assisted in national hospital and laboratory accreditation processes.