Meet Our Founder

Dr Jonathan Spages
Dr Jonathan Spages is the only functional medicine doctor specialising in reversing chronic health problems such as type 2 diabetes, hyperthyroid, stubborn fat, high-cholesterol and much more.
He owns a thriving telehealth practice in Florida where thousands of patients seek his help for reversing diabetes from all over the world. He uncovers, through advanced testing, what is really CAUSING your never-ending health problems by not just treating your symptoms but going down to the root-cause.
Then patients get a customized “only made for you” plan to get better to put out these “fires”. A patient’s custom solution will be easy to follow, step-by-step, and based strictly on the most advanced health science and research available. By working with Dr Spages, diabetics won’t be getting a “let’s try this” approach.
He has tremendous success because he works with the most challenging “I’ve been to every doctor with no results” cases and sees great results.
As seen on

Meet Our Coaches

Natalia Montenegro MSN, FNP-BC
Practicing Functional Medicine, Nurse Practitioner, Florida
Natalia is deeply passionate about embracing a natural approach to medicine while allowing the body to heal like it was intended to in the first place.
Natalia Montenegro is a cheerful Nurse Practitioner practicing functional medicine in the sunny state of Florida. Natalia is deeply passionate about embracing a natural approach to medicine while allowing the body to heal like it was intended to in the first place.
Natalia finds great joy in educating and empowering others to live a healthy active lifestyle! Following her experience in primary care, she quickly realized that the medications commonly prescribed to manage chronic conditions, such as diabetes, hypothyroidism, and obesity, often lead to more complications rather than offering long-lasting solutions.
Instead of effectively treating these conditions, these drugs merely act as a temporary bandage. Natalia firmly believes in the power of functional medicine, which aims to address the root causes of health issues rather than simply alleviating the symptoms. Besides her passion for functional medicine,
Natalia loves the beach, and spending time with family. She finds immense pleasure in exploring the world through travel.
Natalia also enjoys expressing her creativity through painting, even though her art is worthy of a giggle at an art gallery! She is beyond excited to help patients find the root of their issues and achieve all their goals so they can be the healthiest and happiest version of themselves!

Erica Batto
Functional Health Coach, Florida
Erica has a passion for health and functional medicine and encompasses growth in herself and others. She strives to make others achieve their goals and to help them become the best version of themselves.
Erica Batto is a Health Coach at Advanced Natural Health Center, where she helps patients take charge of their health and achieve lasting results. Originally from upstate New York, she moved to Florida in 1995 and now lives in West Central Florida with her partner, his son, and their dog Lexi. She enjoys spending time outdoors, especially boating, fishing, and camping.
Erica began her career in health and wellness in 2017 when she returned to school to earn her degree in health and wellness, followed by certification as a health coach. She chose this path to empower people with the knowledge and strategies needed to improve their lives and become the best version of themselves.
Initially, Erica believed diet and exercise alone were the keys to health. Through her work with Dr. Jonathan Spages, she discovered the importance of identifying and addressing root causes of illness. Seeing patients reduce medication, regain energy, and live healthier lives has strengthened her passion for this approach.
As a coach, Erica guides patients with compassion and accountability, walking alongside them through every step of their journey. Her goal is to inspire confidence and help patients not only improve their health but also reclaim their quality of life.