Rebuild your health from the inside out.

Functional medicine care proven to treat and prevent the root cause of chronic illness.

Understand Functional Medicine.

We treat health issues by identifying and treating the root cause of your symptoms. 

1.  Root Cause Care

2.  Advanced Analysis

We understand that no two people are alike. Often times, the same disease can have different causes. That's why we tailer each treatment plan based off our in-depth analysis of your symptoms. We can also prescribe medications when necessary to correct underlying imbalances. 

3.  Personalized Medicine

We get an in-depth understanding of your body by using advanced testing, history taking, and evaluation. 

Common Conditions We Treat

*The following health conditions are examples of common conditions we treat. If you don't see your health concern on this list, call us to see if we are a good fit for you!*


Metabolic Health

  • Diabetes/blood sugar

  • High cholesterol

  • High blood pressure

  • Cardiovascular disease

  • Weight loss

brain injury.jpeg

Complex Chronic Diseases

  • Mold Illness

  • Toxin illness

  • Autoimmunity

  • Brain fog

  • Concussion recovery

  • Chronic fatigue and pain

Digestive Issues

Hormonal Imbalances

  • Diarrhea

  • Constipation

  • Reflux/GERD

  • Irritable bowel syndrome (IBS)

  • IBD (Crohn's, ulcerative colitis)

  • Food sensitivities

  • Infections

  • Low thyroid

  • Hashimoto's

  • Graves' disease

  • Fatigue despite normal thyroid

  • Low testosterone

  • Female hormone imbalance

Our patients come to us wanting more from their healthcare. We see how frustrating it can be when you get prescribed another medication or walk away from an appointment without a lasting solution. At Roots, we use evidence-based & practical personalized treatment to manage the root cause of your health problems. We work with with patients to uncover the root cause of their digestive complaints, hormone imbalances, diabetes, weight gain, and cardiovascular disease. 


Our Approach To Medicine.

Meet Your Guide

Gavin Guard, MPAS, PA-C, CISSN, Pn1

Medical Director

Gavin is a native to Friday Harbor as a 6th-generation islander. He graduated suma cum laude from Whitman College studying biochemistry and received his Master's degree as a PA from the University of Colorado School of Medicine. His work revolves around helping his patients realize their optimal health through building resiliency and guiding them through the common challenges that get in the way. He believes the way to a happier world is by building healthier people. A main principle in his work is to make this model of care more accessible and affordable. 

Why Patients Choose Us

The best in evidence-based nutrition and functional medicine
Screen Shot 2020-08-05 at 1.39.13 PM.png
Screen Shot 2020-08-05 at 1.44.04 PM.png
Screen Shot 2020-08-05 at 1.52.58 PM.png

Dr. Ben House, PhD, CISSN

"Gavin is smart, driven, resourceful, and highly capable, but more than any of that he cares. He cares about you and he cares about doing what's right."

Cherronda R.

Gavin, is attentive, understanding and non-judgmental. He asks questions to seek to understand your needs. Then creates a plan will work best for you. Gavin has taught me the importance of celebrating my small wins along this health journey.

"Resourceful" and "Attentive" Care

Your 3 Step Plan to Health

Complete Care-Better Health

1. Initial Consultation


60 minute appointment

We take the time to get to know you, your symptoms, and your health goals.


2. Review Customized Plan


45 minute appointment 

We order relevant and necessary testing to uncover the root cause of your symptoms, then review your personalized treatment plan.


3. Regular Follow-ups until you are happy with your results

30 minute appointments

Every 4-8 weeks, we followup on your progress with ongoing support from a medical provider and a nutrition coach. 

Have more questions?

Give us a call at 360-622-6150 or check out our FAQ page

Gavin Guard, MPAS, PA-C, CISSN


818 Mullis St, Suite #6

Friday Harbor, WA 98250



Medical Disclaimer: Any information on this site is for educational and informational purposes only, and does not substitute for direct medical care, nor can the content be implied to be medical advice, diagnosis, or treatment.