Select your Registered Dietitian and book your free consultation. Every session is personalized to your unique health story.
MS, RDN, LD · Co-Founder
Ashley Glantz, MS, RDN is a registered dietitian nutritionist passionate about making nutrition simple, accessible, and sustainable. With a Master of Science in Nutritional Science and extensive experience in clinical nutrition, medical nutrition therapy, and community-based wellness, Ashley helps individuals improve their health through evidence-based, compassionate care.
Her expertise spans chronic disease management, outpatient care, and medically tailored meal programs, as well as behavior change coaching that empowers clients to build lasting habits. Ashley’s approach blends the science of nutrition with the art of listening, meeting clients where they are and guiding them toward achievable, meaningful goals.
She is also the co-founder of Wellness Roots Foundation, a nonprofit organization dedicated to expanding access to nutrition education and empowering communities to live healthier, more informed lives.
RDN, LD · Co-Founder
Dustin Mesick, RDN, LD is a Registered Dietitian Nutritionist passionate about the power of nourishment. His own journey with a rare form of cancer deepened his understanding of the challenges patients face with food and self-care during recovery, and he brings experience from hospitals, eating disorder treatment centers, and outpatient settings to help individuals meet their unique nutrition goals.
Dustin’s approach is client-centered, focused on each individual’s unique needs, preferences, and goals. He collaborates closely with clients to develop personalized nutrition plans that align with their lifestyle, values, and health goals. By actively listening and involving clients in the decision-making process, he empowers them to take control of their health journey and create sustainable changes, providing guidance and support while ensuring each plan feels realistic and achievable for long-term success.
He is also a co-founder of Wellness Roots Foundation, a nonprofit organization dedicated to expanding access to nutrition education and empowering communities to live healthier lives.
Outside of work, Dustin enjoys writing music about nutrition, practicing meditation, and co-hosting a Cancer and Wellness podcast.
“What you resist persists.”
RDN, LD · Co-Founder
Gary Sardina, RDN is a Registered Dietitian Nutritionist with a Bachelor of Science in Nutritional Science and a strong background in acute clinical care. He has served as a clinical dietitian at Northridge Hospital and currently works at Henry Mayo Newhall Hospital, where he specializes in evidence-based medical nutrition therapy.
With years of hospital experience, Gary has seen firsthand how powerful nutrition can be for healing, prevention, and long-term wellness. In his private practice, he offers personalized, compassionate guidance to help clients build sustainable habits and improve their overall well-being.
He is also the co-founder of Wellness Roots Foundation, a nonprofit organization dedicated to increasing access to nutrition education and empowering communities to live healthier lives.
Outside of his professional work, Gary enjoys cooking, traveling, gardening, and spending quality time with his family, activities that keep him grounded and connected.
Meet your dietitian, ask questions, and confirm your insurance coverage, all in one free, no-obligation call.
Book My Free Consultation →Gary’s booking calendar depends on your insurance. Select your plan below:
Booking calendar for clients with Aetna or United Healthcare:
If you have Golden Rule, Optum, Oxford, or United Medical Resources (UMR), Gary schedules through Fay Nutrition. Click below to open his booking page.
Open Gary’s Fay Scheduling Page →