Maas Method




Welcome to Maas Method

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!

How we Heal

Utilizing the Functional Medicine Approach

Focus on the Root Cause of Medical Conditions

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

Evidence Based

Relying on data to 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

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

Education that Empowers You

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

Systems-Based Approach

Our 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, Rebecca Maas has dedicated her career to empowering individuals to achieve optimal health. Her education and expertise in clinical and holistic nutrition, combined with a deep-rooted passion for natural healing, enables her to address various health issues at their core. Rebecca’s approach is personalized and comprehensive, focusing on each client’s needs to guide them toward a balanced, healthy life.


Invite Rebecca Maas to Ignite Wellness at Your Next Event

Besides working one-on-one with clients, Rebecca shares her knowledge and passion for integrative functional medicine through speaking engagements. Companies, wellness events, and health-focused seminars benefit from her insights into holistic health, nutrition, and lifestyle changes. With her engaging presence and expertise, Rebecca inspires audiences to embrace a more health-conscious lifestyle, offering practical strategies for improving well-being at both personal and organizational levels. If you want to empower your group, invite Rebecca to speak about functional medicine and holistic wellness at your next event. Her sessions are the beginning of a healthier, more informed future for all participants.


Explore Our Community Engagement Hub

Choose from a curated collection of videos and podcastswhere Rebecca shares her insights on integrative functional medicine, nutrition, and holistic health practices. Join our growing community and embark on a learning, empowerment, and personal growth journey. Each video and podcast providesvaluable knowledge to support your path to optimal health and well-being.


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.