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Over the last decade Leona has helped thousands of people regain their health and wellbeing while meeting their goals through food first. She has been the go to nutritionist in Los Angeles for locals and families as well as Southern California industry leaders and even other practitioners and doctors seek her unique and thoughtful food as medicine approach for themselves and their patients. Leona also works with people all over the country and the world offering teleconsults.

Leona favors traditional modalities that honor the whole person and combines this approach with cutting edge functional and nutritional lab testing for the most individualized approach. She has observed that even the simplest of food and lifestyle changes can have a significant and positive effect in how a person feels in their body and mind and how it reflects in their entire lives.

Leona is a family practitioner trained as an Integrative Functional Nutritionist. She completed her training and certification in Nutritional Medicine and in Herbal Medicine through The American University of Complementary Medicine located in Los Angeles. For almost a decade Leona has trained in and has been a part of the evolution of Functional Medicine. Leona has trained through the Institute of Functional Medicine and the American Academy of Anti-Aging Medicine with additional certification in functional endocrinology and functional lab analysis through the University of Bridgeport and taught by Dr. Datis Kharrazian of the Kharrazian Institute.

Leona is also trained and certified in Culinary Nutrition through the Academy of Culinary Nutrition. She is also certified in Nutrigenomic Medicine through Dietitians of Canada. Leona is certified as a Personal Trainer through the Aerobics and Fitness Association of America. She is also a DONA certified Birth Doula and a certified First Line Therapy Practitioner. Endlessly fascinated by the power of food and the human body’s capacity to heal, Leona continues to study the latest research coming out in Nutrition Science while spending equal time in the kitchen and her local Farmers Markets. Leona helps her clients cut through the many conflicting trends and get to the heart of what is key for their own health in a practical, positive and supportive environment.

"Leona is the best health care professional I have ever consulted."

- Greta H. West Hills

"Leona is the most knowledgeable person you can find in the field of nutrition!"

- Pedro U. Los Angeles, CA

"Leona is absolutely brilliant and makes the process a truly enjoyable experience!"

- Laura L., Santa Monica, CA

"All I can say is that Leona pretty much saved my life!"

- Conrad R. Los Angeles, CA

"I wish I could have a mini-Leona with me at all times. She actually cares about her clients and their wellbeing! She is more than a nutritionist. She is a trusted partner!"

- Ziba A. Los Angeles, CA

Francesca Alfano, MS, CDN, CNS, IFNCP is a board-certified functional medicine Dietitian-Nutritionist. She holds a master's degree in Nutrition and Integrative Health, is a Certified Nutrition Specialist®, and has received advanced training in functional nutrition from the Integrative and Functional Nutrition Academy.

Francesca helps women who are struggling to lose weight implement simple, sustainable food and lifestyle habits so they can support a healthy metabolism, balance hormones, increase energy levels, improve fertility, and permanently lose weight without counting calories or following restrictive diets.

Unlike traditional diets, Francesca uses an individualized functional medicine and culinary nutrition approach to help each client build lifelong healthy habits so they can confidently nourish their bodies in a delicious and satisfying way.

In her career, Francesca has helped thousands of clients reach their goals and adopt healthy eating habits leading to long-term weight loss and improved health outcomes. Francesca has been featured in Well + Good, Shape, Women’s Health, and SportsIllustrated, among others.

CREDENTIALS

Certifications and Professional Organizations
CertifiedNutrition Specialist (CNS)
Certified Dietitian Nutritionist ( CDN) -NY and CT
Integrative and Functional Nutrition Certified
Practitioner (IFNCP)
CertifiedHolisticHealth Coach
Member of the American Nutrition Association
Member of the Academy of Nutrition and Dietetics
Member of the Institute of Functional Medicine

Tanner Hamilton is an A.C.E.–certified personal trainer with over 10 years of experience specializing in functional training, corrective exercise, and rehabilitation-focused programming. With several years of experience working in a physical therapy clinic, Tanner has developed a strong foundation in postural restoration, injury prevention, and movement correction. He holds advanced A.C.E. certifications in Functional Training and Weight Management and is currently pursuing massage therapy to further expand his expertise in recovery and soft-tissue care. Tanner is dedicated to helping clients move better, feel stronger, and build long-term, sustainable results through safe, effective, and individualized training.

Alenka Ravnik-List brings warmth, wisdom, and decades of experience to her work as a registered dietician-nutritionist, helping our patients use food as a powerful tool to support long-term vitality, hormonal balance, and healthy aging. 

Originally from Argentina, Alenka earned her Master’s degree in Nutrition from the University of Buenos Aires. Her career has spanned continents and disciplines, from individualized nutrition counseling to large-scale educational programs developed in collaboration with institutions like Mount Sinai Medical Center and AstraZeneca.

Alenka’s expertise lies in precision and functional nutrition, anti-inflammatory eating patterns, glucose and insulin regulation, and identifying and addressing nutritional deficiencies. She plays a key role in supporting patients through hormonal transitions such as perimenopause and menopause and works closely with those using GLP-1 medications to optimize metabolic health in a thoughtful, whole-person way.

For over 15 years, Alenka has collaborated with Dr. Barbieri in a shared mission: to help women feel well now—and thrive for decades to come. Together with the rest of our clinical team, she brings a truly integrative approach to care, rooted in connection, longevity, and the understanding that food is one of our greatest allies in health.

When she's not supporting patients, Alenka enjoys yoga, Zumba, and travel. Her favorite meal? A colorful plate of fresh seafood and vibrant veggies.

I have been in the health and wellness field for over a decade. I manage my own business Dynamic Performance, LLC which focuses on nutrition and exercise plans to help clients lead healthier lives. I holds a Master's of Science degree in clinical nutrition and I am a certified personal trainer. My approach uses medical nutrition therapy to manage and prevent disease. Through nutrition and lifestyle interventions, we aim to reach optimal health status for all clients.

Tillie holds a Bachelor of Science in Public Health Science from the University of Maryland, laying the groundwork for her journey into the dynamic realm of health and wellness. Her academic pursuits led her to attain a master’s degree in Integrative Health and Clinical Nutrition from the Maryland University of Integrative Health.

Focusing on mindful eating and hormone health, Tillie has honed her expertise within the nutrition field, driven by a deep-seated commitment to empowering individuals on their wellness path. Her approach emphasizes fostering heightened awareness and a profound connection with one's body, guiding her clients towards holistic well-being.

In addition to her academic accolades, Tillie is a certified yoga teacher, seamlessly integrating the mind-body connection into her practice. Beyond her professional endeavors, she finds fulfillment in dance, culinary arts, creative expression, and immersing herself in the serenity of the great outdoors.

Mickey Viator, MD, is a highly trained, board-certified physician and weight loss specialist at Authentic Balance in Metairie, Louisiana. Dr. Viator has several decades of experience and is exceptionally skilled in medically supervised weight loss.

Dr. Viator received his medical degree from Louisiana State University Health Sciences Center New Orleans School of Medicine. He uses his medical expertise to help patients reach their weight loss goals through medications, injections, customized meal plans, and other lifestyle changes in a welcoming atmosphere.

Dr. Viator employs innovative techniques to achieve highly effective and lasting patient outcomes. He maintains his medical credentials with continuing education on the latest advances in weight loss, wellness, and sexual function treatments.

Dr. Viator’s compassionate demeanor helps his patients feel at ease during their visits. He personalizes treatment plans that ensure lasting success and an exceptional quality of life. He warmly welcomes new and existing patients to Authentic Balance. He looks forward to assisting them throughout their weight loss journeys.

Schedule a weight loss evaluation with Dr. Viator at Authentic Balance by calling his office or requesting an appointment online today.

Rachel Caylor is a Board certified Registered Dietitian and licensed by Georgia State Board . She has a Master of Science in Applied Nutrition and a Bachelor of Science in Nutrition Science. Her love for nutrition began early in life, shaped by a deep interest in understanding how food influences the onset and progression of chronic disease as well as overall health and well-being.

Rachel has experience in a wide range of specialties, including gut health, hormone balance, diabetes management, heart health, weight management, oncology nutrition, and eating disorders. She has experience working in acute care facilities, diabetes management and nutrition centers, and weight loss clinics, where she focused on building habits that support long-term success.

In her free time. Rachel enjoys reading, running, painting, playing the piano, and traveling to see what the world has to offer!

Fun Fact

Asian cuisine is Rachel’s favorite, and she is currently working toward learning how to cook more traditional Asian dishes at home.

Specialties

• Gut Health
• Hormone Balance
• Diabetes / Prediabetes
• Heart Health / Hyperlipidemia
• Weight Management
• Oncology Nutrition
• Eating Disorders
• Preventative & Holistic Nutrition
• Individualized Diet Planning

Fluent in:
• English

Rachel Caylor is a Board certified Registered Dietitian and licensed by Georgia State Board . She has a Master of Science in Applied Nutrition and a Bachelor of Science in Nutrition Science. Her love for nutrition began early in life, shaped by a deep interest in understanding how food influences the onset and progression of chronic disease as well as overall health and well-being.

Rachel has experience in a wide range of specialties, including gut health, hormone balance, diabetes management, heart health, weight management, oncology nutrition, and eating disorders. She has experience working in acute care facilities, diabetes management and nutrition centers, and weight loss clinics, where she focused on building habits that support long-term success.

In her free time. Rachel enjoys reading, running, painting, playing the piano, and traveling to see what the world has to offer!

Fun Fact

Asian cuisine is Rachel’s favorite, and she is currently working toward learning how to cook more traditional Asian dishes at home.

Specialties

• Gut Health
• Hormone Balance
• Diabetes / Prediabetes
• Heart Health / Hyperlipidemia
• Weight Management
• Oncology Nutrition
• Eating Disorders
• Preventative & Holistic Nutrition
• Individualized Diet Planning

Fluent in:
• English

Rachel Caylor is a Board certified Registered Dietitian and licensed by Georgia State Board . She has a Master of Science in Applied Nutrition and a Bachelor of Science in Nutrition Science. Her love for nutrition began early in life, shaped by a deep interest in understanding how food influences the onset and progression of chronic disease as well as overall health and well-being.

Rachel has experience in a wide range of specialties, including gut health, hormone balance, diabetes management, heart health, weight management, oncology nutrition, and eating disorders. She has experience working in acute care facilities, diabetes management and nutrition centers, and weight loss clinics, where she focused on building habits that support long-term success.

In her free time. Rachel enjoys reading, running, painting, playing the piano, and traveling to see what the world has to offer!

Fun Fact

Asian cuisine is Rachel’s favorite, and she is currently working toward learning how to cook more traditional Asian dishes at home.

Specialties

• Gut Health
• Hormone Balance
• Diabetes / Prediabetes
• Heart Health / Hyperlipidemia
• Weight Management
• Oncology Nutrition
• Eating Disorders
• Preventative & Holistic Nutrition
• Individualized Diet Planning

Fluent in:
• English