Our Staff


Registered Nurse Manager Bariatric Coordinator

Kim Ewton received her Bachelor of Science degree in Biology and Nursing (BS and BSN). She began as a charge nurse and continued upward into management, where she continues today. She was one of only a few nurses nationwide to receive the initial certification in bariatric nursing (CBN), which continues to be her passion now for 18 years. She also is a Registered Nurse First Assist (RNFA). In addition to her CBN she also obtained a certification in the operating room (CNOR). She was also one of the first nurses in the state of Texas to specialize in the Transoral Incisionless Fundoplication procedure. Because of the uniqueness of this procedure, she was involved with a clinical study which resulted in her publishing an article in 2011, “Short-term safety and symptomatic outcomes of transoral incision less fundoplication with or without hiatal hernia repair in patients with chronic gastroesophageal reflux disease” in The American Journal of Surgery. Kim has a compassionate heart and believes that patient care is of the utmost priority. She holds memberships with the American Society for Metabolic and Bariatric Surgery, Texas Association of Bariatric Surgeons and Obesity Action Coalition.

Outside of the office she enjoys traveling and spending time with her husband, Tim and 4 kids.

Fortis BMI Ashley Kadlubar Registered Dietitian
Ashley Kadlubar, MS, RD, LD

Registered Dietitian

Ashley received her Bachelor of Science degree and went on to complete her Masters of Science with a Major in Nutrition and Minor in counseling at Texas Woman’s University in Denton following her dietetic internship there. She is a registered and licensed dietitian. She has over 10 years’ experience working in weight loss programs. She has a passion for education and enjoys working both individually with clients along with leading interactive-group class and cooking demos. Her professional goal is to provide patient centered care aimed at achieving lifelong health and wellness through nutrition, lifestyle, and physical activity. Ashley enjoys the lake, fishing, camping and making messes in the kitchen with her kids. She lives in Denton with her husband, Jonathon, and two kids.

FortisBMI Weight Loss Registered Dietitian Jessica
Jessica Johnson MS, RD, LD

Registered Dietitian

Jessica completed her Bachelors of Science degree, dietetic internship and Masters of Science degree in Nutrition from Texas Woman’s University. After completing her education, she became a Registered and Licensed Dietitian Nutritionist. She has worked in surgical and non-surgical weight loss programs in San Antonio and Dallas her entire career and loves it! Seeing patients achieve their weight loss goals through proper diet and physical activity, gain confidence and a better quality of life is what drives Jessica’s passion to work with her patients on a daily basis. Long term Jessica would love to become a certified provider in Obesity and Weight Management and Certified Diabetes Educator.

Jessica and her husband, Henry live in McKinney with their dog and daughter. In her spare time Jessica loves to travel, cook and try new restaurants! She also enjoys cheering on the University of Kansas men’s basketball team- Rock Chalk, Go Jayhawks!

Antonio MS, RD, LD

Registered Dietitian

Antonio helps patients on their health journey through personalized nutrition recommendations and goal setting. He focuses on teaching about the psychology of health behavior, while combining this information with practical dietary interventions. Antonio is currently in pursuit of a PhD in nutrition with an emphasis on psychology and diabetes prevention. His academic background also includes a Bachelor of Science degree in Nutritional Science from Texas A&M University, and a Master of Science degree in Nutrition from Texas Woman’s University.

Antonio has also taught as an adjunct professor of nutrition in the Dallas County Community College District and as a doctoral student at Texas Woman’s University. His lectures emphasize nutrition myth busting, the latest scientific research, and teaching students that “Nutrition Matters Because People Matter.”

Outside of the office, Antonio enjoys competing in sports, going to church, watching the Dallas Cowboys with friends, and working on his first nutrition book.  

Tracey Roth

Patient Navigator Metabolic and Bariatric Surgical Clinical Reviewer

Tracey has been in the medical field since 1996. She has worked exclusively in weight loss programs for over 10 years. Tracey navigates patients through the multi-step process of gaining insurance approval and scheduling procedures. Tracey has extensive experience working with insurance companies and employers to help patients access their benefits. She specializes in authorizations for first time procedures, revisions and difficult cases. She is a certified Metabolic and Bariatric Surgical Clinical Reviewer which supports the quality initiatives set forth by American Society for Metabolic and Bariatric Surgery. She has a passion for helping patients achieve a healthier life. In her spare time, she enjoys spending time with her three children, family and friends.

Casey Whiffin

Administrative Assistant

Casey has been a medical administrative assistant for 19 years in multiple specialties with a focus in bariatrics for 8 years. She especially loves coordinating care for bariatric patients and helping ease the stress of scheduling, filing disability paperwork, and requesting medical records. Casey enjoys working closely with patients to help them achieve their long-term goals. In her spare time, she enjoys spending time with her family and friends and playing with her dog.