Roller Weight Loss & Advanced Surgery employs a multidisciplinary, team approach to provide specialized bariatric medical care. Our program coordinator assists each patient with all phases of the program. Dr. Kristin Roller leads the medical side of the team and evaluates each patient thoroughly from a medical perspective prior to weight loss surgery (bariatric surgery). Our dedicated bariatric dietitian provides both pre and post-op nutritional counseling to help patients maximize their weight loss potential. Our clinical psychologist performs an extensive pre-operative psychological evaluation and counsels patients on behavioral and life-style issues related to weight loss surgery. Post-operatively, the psychologist continues to follow patients, providing guidance and support.
Our program seeks to ensure that patients are making informed decisions, are qualified candidates for surgery and are committed to making the lifestyle changes necessary for long-term weight loss success.
Amanda E. Brackett
Advanced Practice Nurse, Certified Family Nurse Practitioner
Brackett is a board-certified family practice APN. She earned her master’s degree from the University of Central Arkansas. She has special surgical training from the National Institute of First Assisting in Denver, Colorado.
Advanced Registered Nurse Practitioner
Jennie is a board-certified Family Nurse Practitioner. She sees patients at the Fayetteville location. She earned her bachelor’s and master’s degree in Nursing from the University of Arkansas for Medical Sciences at Little Rock. Prior to joining Roller Weight Loss, Jennie worked in the family practice setting focusing on wellness and management of acute and chronic illnesses. Her nursing experience also includes urgent care, internal medicine, medical-surgical nursing, and organ transplant.
Matt Johnson, RD
Matt Johnson serves as a dietitian on the Roller Weight Loss team. He helps patients get the most out of their weight loss experience through diet and exercise education and encouragement. Johnson has worked as a clinical dietitian for five years and specializes in gastrointestinal diseases and metabolic disorders. He has experience with organ transplant patients and has also worked on a nutrition support team with doctors and pharmacists to manage critical care patients. Johnson attended The University of Tennessee at Chattanooga for his degree in dietetics and completed his dietetic internship through the University of Alabama at Birmingham.
Chief Operating Officer
Anne Marquart, RD
Marquart has been a registered dietitian for 15 years, and the majority of her experience involves bariatrics and weight loss. She received her bachelor’s and master’s degrees from Texas Tech University. She was awarded Arkansas’ Recognized Young Dietitian of the Year in 2008 and has served on the Northwest Arkansas District Academy of Nutrition and Dietetics Board. Marquart worked at Roller Weight Loss from 2007-2011 and is happy to be back. She enjoys introducing patients to food as it relates to weight loss surgery, and she feels blessed to be able to follow patients on their journey.
Certified Physicians Assistant
Shannon is a board-certified Physician Assistant. She completed her Bachelor of Science in Biology at Southwest Baptist University in Bolivar, MO. She obtained her Master of Science in Medicine at Trevecca Nazarene University in Nashville, TN. Shannon joined the Roller Weight Loss team in 2016, working with Dr. Kwon as his first assist.
Masters of Nursing Science, Advanced Registered Nurse Practitioner, Certified Adult-Gerontology Acute Care Nurse Practitioner
Sarah is a board-certified Adult and Geriatric Acute Care Nurse Practitioner. She sees patients at the Fayetteville location. She earned her Bachelor in Nursing Science from the University of Arkansas, Fayetteville, and her Master in Nursing Science degree from the University of Arkansas for Medical Sciences, Little Rock/Fayetteville. Prior to working at Roller Weight Loss, Sarah worked in surgery as a Surgical Technologist. Her nursing experience has been focused on Critical Care and Bariatric Medicine.
Sophie Mahaffey, RD
Chief Engagement Officer Licensed Practical Nurse
Licensed Practical Nurse
Advanced Registered Nurse Practitioner, Certified Family Nurse Practitioner
Sara is a board-certified family practice nurse practitioner and sees patients at the Tulsa office. She earned her bachelor’s degree from Northeastern State University in Tahlequah, Oklahoma and her master’s degree from Samford University in Birmingham, Alabama. Sara’s nursing background includes experience in family practice, intensive care, medical-surgical nursing, cardiology, and nursing education.
Sandy M. Branson
Advanced Practice Nurse, Acute Care Nurse Practitioner
Sandy is an Advanced Practice Nurse with training focused on the management of patients with acute and chronic illnesses. Sandy completed her education at Vanderbilt University and is board certified in Acute Care. Her experience has been focused on wellness and internal medicine.