Maas Method

Rebecca Maas

Holistic & Clinical Nutrition


Your Body is
Designed to Heal

Using an integrative functional medicine approach, we partner with you to master your health, improve your quality of life, and bring healing to chronic conditions. It’s time to start thriving. Start optimizing your health today!

A Holistic Approach for Optimal Well-Being

With roots in a holistic upbringing and an educational background from UC Berkeley, UCLA, and the Natural Healing Institute, I’m dedicated to treating complex chronic conditions and helping you optimize your health and performance. Whether you have been diagnosed with chronic illnesses or are a high-functioning executive, I blend integrative functional medicine principles with the healing potential of food and herbs, promoting wellness and preventing illness. I can work with you one-on-one or in a group setting. I also share insights through speaking engagements, inspiring audiences to embrace holistic health practices. Let’s journey toward optimal well-being together.

How We Heal

Utilizing the Functional Medicine Approach

Focus on the Root Cause of Medical Conditions

I treat conditions by discovering and addressing your condition’s root cause to optimize health.


Relying on data to help in the remediation of chronic conditions.

Plans Tailored to Individual Needs

Treatment plans are highly personalized, providing improved individual outcomes.

Multi-Disciplinary Approach

I address conditions using multiple modalities, including herbal supplements, dietary and lifestyle changes, integrative functional medicine, and more.

Education that Empowers You

I partner with you on your health journey, providing education and coaching to help you implement changes in your daily life.

Systems-Based Approach

My deep health history assessments help to identify the antecedents and triggers.


15 Years of Industry Experience

With over 15 years of integrative functional medicine experience, I have dedicated my career to empowering individuals to achieve optimal health. My education and expertise in clinical and holistic nutrition, combined with a deep-rooted passion for natural healing, enables me to address various health issues at their core. My approach is personalized and comprehensive, focusing on your needs to guide you toward a balanced, healthy life.

Rebecca Maas has changed my life!

Rebecca Maas has changed my life! I am incredibly grateful for her expertise, her care and her confident, yet gentle approach. Rebecca was first invited to our YPO Spouse Forum as a resource to speak on menopause, hormone education, and nutrition. Rebecca’s depth of knowledge surpasses even the best doctors I’ve ever worked with in this field. I was so impressed I started working with her immediately as a private client.

I have struggled with digestive issues for 30 years, suffering from chronic bloating, abdominal discomfort/pain, difficulty evacuating and fatigue. In six months working with Rebecca I feel absolutely revitalized. The approach was multi-pronged which included taking supplements, lifestyle modification, dietary changes based on food sensitivities and inflammatory triggers.

I feel light, energized, and in control.

Rebecca really cares about my health and well-being. I trust Rebecca’s expertise and guidance and truly feel she is my partner in my journey to vitality.