Jan Tilley, MS, RDN, LD
Founder
Jan Tilley, Founder of JTA Wellness, is a national leader in nutrition counseling, wellness and chronic disease management. Jan is currently retired.
Read more about Jan HERE.
Chelsea Marquez, MS, RDN, LD
CEO and Owner
Chelsea is a Registered Dietitian with a bachelor’s and master’s degree in nutrition from Texas Woman’s University. She worked for over 10 years in the nutrition field and is passionate about changing the lives of people through optimization of nutrition. She specializes in Medical Nutrition Therapy of pediatric and adult nutrition in all major and advanced disease states, including eating disorders. Her goal is to help her patients transform their relationship with food.
Learn more about Chelsea HERE.
Cristine Saks, MS, RDN, LD
Clinical Nutrition Manager
Cristine Saks graduated from St. Mary’s University with a Bachelor of Science in Biology and a minor in Chemistry. She completed her dietetic internship and earned a Master’s degree in Nutrition from the University of the Incarnate Word. Cristine specializes in weight management, food allergies, pregnancy and postpartum nutrition, and pediatrics. She is proud to be able to counsel in both English and Spanish.
Learn more about Cristine HERE.
Jerrica Garza, RDN, LD
Registered Dietitian Nutritionist
Jerrica graduated from The University of Texas at Austin with a Bachelor of Science in Nutrition and Dietetics and completed her Dietetic Internship through the Coordinated Program in Dietetics at UT Austin. Jerrica has worked with numerous organizations ranging from sports nutrition, outpatient nutrition counseling, and nutrition program planning. She has a passion for community nutrition, exercise nutrition, and mental, emotional, and physical health. Believing nutrition is multifactorial and influenced by both internal and external conditions, Jerrica aspires to instill change within the San Antonio community by acknowledging, educating, and nourishing all dimensions of health.
Learn more about Jerrica HERE.
Nour Amin, MS, RDN, LD
Registered Dietitian Nutritionist
Nour is an accomplished nutrition professional with a Bachelor of Science in Nutrition and Dietetics and a Masters in Dietetic Studies. With a diverse internship experience in community, food service, and clinical settings, she is committed to helping individuals achieve optimal health through the power of nutrition. Nour specializes in weight management, eating disorders, and common chronic illnesses such as heart disease and diabetes. Her passion lies in guiding others towards a balanced lifestyle by combining evidence-based nutrition care and empowering sustainable dietary choices. Through her expertise and dedication, Nour promotes positive transformation and well-being.
Learn more about Nour HERE.
Nicole Harris, MS, RDN, LD, IFNCP
Registered Dietitian Nutritionist
Nicole is a dedicated advocate for empowering her clients to take control of their health. Through patient-centered counseling, she supports clients in becoming well-informed and proactive participants in their healthcare journey. Her holistic approach during counseling sessions not only focuses on nutrition education but also considers the interconnectedness of the mind and body in making lasting changes. With a background in biochemistry and nutrition, as well as scientific research experience, Nicole excels in conveying the science behind lifestyle changes in order to help promote long-term adherence. Trained in integrative and functional whole foods nutrition, she specializes in providing functional nutrition therapy for various chronic conditions, helping clients transition from mere survival to thriving.
Learn more about Nicole HERE.
Kelsie Raign, MS, RDN, LD
Registered Dietitian Nutritionist
Kelsie is a registered dietitian, licensed in Texas, with a bachelor's and master's degree in human nutrition from Texas State University. She spent 3 years studying the link between obesity, inflammation, and cancer and enjoys educating people on nutrition and diseases. She is passionate about helping people improve their lifestyle habits to manage their health. She specializes in medical nutrition therapy for cancer, diseases of the liver and kidney, GI disorders, diabetes, tube feeds, and weight management. She believes nutrition and wellness is a transformative process that is essential for life.
Learn more about Kelsie HERE.
Samantha Flores, MS, RDN, LD
Registered Dietitian Nutritionist
Samantha graduated from the University of Texas at San Antonio with a Bachelor of Science in Community Health, Bachelor of Science in Nutrition and Dietetics and a Masters in Dietetic Studies. She completed her internship in 2021, with a focus in older adult nutrition. Samantha specializes in weight loss/bariatric surgery management, heart disease, diabetes management, tube feeds/TPN, chronic kidney disease and GI disorders. As a passionate dietitian, she is dedicated to simplifying the complexities of nutrition, striving to empower her clients with knowledge and strategies that make healthy eating both understandable and manageable.
Learn more about Samantha HERE.
Rachel Bland, RDN, LD
Registered Dietitian Nutritionist
Rachel completed her Bachelor of Science degree in Nutrition & Foods as well as her Dietetic Internship at Texas State University. Her Internship and Master-level courses had a focus in pediatric nutrition. Rachel specializes in counseling an array of patients, including pediatric patients and families, as well as those struggling with Weight Management, Diabetes, Gastrointestinal Disorders and more.
Learn more about Rachel HERE.
James (J.R.) Oliver, MS, RDN, LD
Registered Dietitian Nutritionist
J.R. is a Registered Dietitian who graduated from Texas State University with a Bachelor of Science degree in Nutrition & Foods and a Master of Science degree in Human Nutrition. He completed his dietetic internship in May of 2020 and is passionate about helping people achieve a high quality of life at any age. He believes that education plays a major role in achieving this goal and works to promote high quality nutrition education and communication. He specializes in general nutrition education for weight management and chronic conditions including PCOS, pre- and Type 2 diabetes, fatty liver, high cholesterol, hypertension, and more.
Learn more about J.R. HERE.
Mary Jane Medlin
Practice Manager
Mary Jane graduated from Texas A&M University-Kingsville with a degree in Business Administration and has worked in the financial sector for over 30 years. She is a proud Texan, who has been married to her loving husband for 30+ years with a beautifully blended family of 4 children, and 10 grandchildren. As the Practice Manager she manages all daily business aspects of the office and puts into place adequate management procedures to improve patient care. Since working at JTA Wellness, Mary Jane also has a new found desire for cooking. Being a breast cancer survivor for over 20 years, she has a dedicated passion for healthy living and strives to ensure each client here at JTA embraces that same goal.
Nicki L. Ortiz, CHES, CWWS
Director of Workplace Wellness
Nicki came to JTA Wellness as an intern in the summer of 2013 and has since developed our workplace wellness programming into the dynamic department we have today. Whether she’s assisting our partnered companies with their workplace wellness endeavors or directing our team, Nicki takes pride in her attention to detail and thorough execution. She graduated from The University of Texas at San Antonio with a degree in Community Health and has been certified as a Health Education Specialist and a Workplace Wellness Specialist. Nicki is passionate about nutrition and wellness and has plans to further her education with a graduate degree in public health. In her spare time, Nicki enjoys developing recipes, exploring San Antonio’s culinary scene, and group fitness classes.
Sarah Hunsicker
Director of Patient Relations
In 2018, Sarah joined JTA Wellness looking to make a professional transition into health and wellness. In 2017, she graduated from the University of San Antonio with a Bachelors in Accounting & Finance. Always with a smile on her face, she is ready to promote health and wellness throughout our community. Whether it’s attending networking events or stopping by physician clinics, Sarah is executing marketing techniques for JTA Wellness. Sarah loves connecting with people and providing them with resources to utilize optimum health.
Outside of work, she continues to promote a healthy lifestyle through running, hiking, and biking. She loves to spend her free time with her husband, friends, and boxer, Oakley.
Rhiannon Lopez
Referral Coordinator
In 2022, Rhiannon joined JTA Wellness looking to become the connecting point between patients and lifestyle changes. In 2019, she graduated from the University of San Antonio with a Bachelors in Kinesiology - Exercise Physiology. She has had experience working with kids and adults in the Health and Wellness field. She has a passion for helping people learn and grow within themselves.
Outside of work, she continues to promote a healthy lifestyle through, hiking, walking, swimming and loves to spend her time with her Maine Coon (cat), Mr. Hugh Mungus.
Chloe Redd
Patient Coordinator
Chloe has worked closely with the community for over 10 years and takes pride to be transitioning her career in healthcare with an established healthcare practice like JTA Wellness. Being a pillar of the community is very important to her as she is happy to be able to provide partnership and assistance to our patients and professional team in English and Spanish. She believes a mix of being informed, continually educating yourself in healthy techniques and investing in your well-being physically, mentally, and emotionally is the key to living your absolute best and fulfilling life.
Outside of work she enjoys day trips, exploring the city with her son, listening to podcasts about self-care, finding decorating ideas and being in her hometown of New Braunfels with her family.
Delmy Julian
Patient and Marketing Coordinator
Delmy is a current student at The University of Texas A&M majoring in Business Administration & Marketing. Her most recent positions have been at Altiqe Consulting and Ratner Consulting. With her experience assisting with marketing activities, podcast production, and managing all relationships and interactions within the company alongside the CEO's she looks forward to helping JTA Wellness increase awareness and the connection within the community. She enjoys working together and making an impact on all patients' well-being by attending company events, visiting clinics, and meeting with physicians.
In her spare time, she enjoys spending time with her husband and their four-legged best friend.