Meet the dietitians

Shannon Leininger, MEd, RDN, LD, CDCES, CHES

Shannon grew up outside of Kansas City, MO and attended the University of Missouri-Columbia, where she earned her B.S. in Nutrition and Fitness. After graduating, she moved to Las Vegas to earn a Masters Degree in Health Promotion. During this time, she realized she had a real passion for nutrition and learning more about how it can be used to help prevent and treat diseases, and most of all, improve quality of life.  Shannon went back to school to earn her degree in Nutrition Sciences and since then has worked as a Registered Dietitian in a variety of settings and with a variety of age groups, ranging from preschoolers to seniors.  Shannon has worked in public health, corporate wellness, and most recently in private practice. Shannon is also a Certified Diabetes Care and Education Specialist and a Certified Health Education Specialist and is a member of the Academy of Nutrition and Dietetics and American Association of Diabetes Educators. In addition, she earned a Certificate of Training in Obesity Interventions in 2018. She has given numerous health seminars and led programs on topics such as men’s and women’s health, stress management, tobacco cessation, diabetes, and weight management to a wide range of audience sizes.  

Shannon truly feels that it’s what you’re doing “most of the time” that matters, and welcomes the opportunity to help you improve your quality of life and feel better.  As a dietitian, naturally Shannon recognizes the importance of nutrition, but also takes into account the impact that other factors, such as physical activity and stress, have on your health.  There are many factors that go into deciding the types of foods you eat, and Shannon can help you navigate through any barriers and decide which eating plan is the best for you. Sometimes people know “what” to eat, but may need help figuring out how that fits into their life. In addition, Shannon can help you work on changing your behaviors by exploring some of your triggers for eating, which is key to long-term success. Whether your goal is to manage a disease, prevent a disease, or simply “LiveWell,” Shannon can help! Shannon works at our offices on North Rainbow and East Sahara.

William Moller, RDN, LD, CPT

Will was born and raised in Southern California. He grew up playing sports and after high school found his passion in health and exercise. This led him towards an academic career focused on nutrition. Will completed his studies at San Diego State University with a degree in Food and Nutrition. To round out his passion for exercise, he became a Certified Personal Trainer through the National Academy of Sports Medicine. He is currently in the process of completing his Master’s Degree at Arizona State University in Nutritional Science and Dietetics. He has been a Registered Dietitian since 2018 working in long term care and behavioral facilities in Texas and Florida. He strives to provide customized nutritional interventions and works to improve the quality of life of the residents and patients he works with.

Will believes in looking at various dynamic approaches in building a nutritional program that works to help his clients reach their goals. The importance of individual sustainability is one of the key objectives that he aims to put forward. He loves living an active lifestyle, listening to podcasts, and spending time with friends and family. Will can help you with building a nutritional regiment that is realistic and sustainable in reaching your goals and maintaining the changes you are working towards. Will works at our office on North Rainbow.

Osiris MacDonald, RDN, LD

Osiris is a dedicated Registered Dietitian with a passion for promoting health and wellness. She is grateful to be a native Spanish speaker, and knows she can help a broad range of people. With a strong affinity for the outdoors and a love for wholesome, nutritious foods, Osiris is on a mission to inspire positive lifestyle changes within the community. She has a background in clinical nutrition and a heart for service, and is able to combine her expertise and compassionate spirit to make a meaningful impact on individuals’ lives, fostering a healthy and happier community. Osiris works at our offices on North Rainbow and East Sahara.

Picture of Beth Byers
Beth Byers, RDN, LDN, CDCES, CPT

Beth grew up in Northern California. When she was a teenager, she was one of only a few obese children in her high school. She had the idea that she would find a “magic pill,” become rich and famous and no one would have to suffer from being overweight again! By the time she was in college, her personal weight loss journey proved to her that lifestyle choices of diet and exercise were the key to weight management and her interest in nutrition and dietetics was born.

She completed her BS degree in Nutrition and Dietetics at the University of New Mexico (UNM). An intern rotation at a diabetes clinic taught her that Type 2 diabetes and weight management are closely related. Her passion for diabetes prevention was ignited and she became a Certified Diabetes Educator (CDE). With an interest in physical activity, she became a Certified Personal Trainer (CPT) through the American College of Sports Medicine (ACSM).

While diabetes and weight management education have always been the core of Beth’s career, she has also had the opportunity to work in a variety of settings such as hospitals, dialysis clinics and skilled nursing facilities. Since 2022, Beth has recertified as a Diabetes Care and Education Specialist (CDCES) and relocated to Las Vegas, Nevada.

Beth believes that education is key in understanding how food and exercise impact health. She is passionate about helping people recognize how the smallest of changes based on individual preferences can produce large lifelong results. Beth works at our offices on East Sahara and North Rainbow.

Michael Hairston headshot

Michael Hairston, RDN, LDN

Michael was born in Virginia and attended the University of the District of Columbia, where he earned his B.S. in Nutrition and Dietetics. He became passionate about nutrition at a young age after watching family members struggle with nutrition-related health issues, and struggling with being overweight himself. With a balanced diet and exercise, he was able to lose over 80lbs. This inspired Michael to gain more knowledge in this field. Others in the community saw the transformation and became motivated to be more health conscious.  

Before becoming a dietitian, as a chef, Michael transformed common comfort foods to make them more nutritionally balanced while keeping the same appearance and taste. These changes have helped him, and others, continue to enjoy food without feeling guilty. 

Michael’s background is in clinical nutrition, and he has helped numerous individuals with a wide range with nutrition-related health issues. Through nutrition education, he feels like he is able to help transform people’s lives. Seeing transformations and hearing success stories motivate him on a daily basis to continue doing what he loves. Michael works at our South Rainbow and North Rainbow locations.