About
Dr. Sam Lavis is a board-certified family medicine physician and the founder of Functional Health Solutions in Snohomish, WA. He earned his medical degree from Pacific Northwest University of Health Sciences and completed extensive functional medicine training through the Institute of Functional Medicine. His clinical work spans family medicine, functional medicine, and human optimization, with deep expertise in hormone replacement, advanced lab testing, autoimmune disease, thyroid conditions, and cardiovascular prevention.
Dr. Lavis's path into functional medicine began with a personal health challenge he faced as a high school junior. A vision issue sent him searching for root-cause answers, and that search became a lifelong passion. He regularly attends conferences to stay current on the latest health science. He personally tests the approaches he recommends to patients. Beyond clinical work, he is passionate about nutrition as medicine, metabolic health, and peak performance across every dimension of life. He brings that same curiosity and rigor to each patient relationship.
Education & Training
Medical School
Pacific Northwest University of Health Sciences
Additional Training
Functional medicine training through the Institute of Functional Medicine
Certifications
Conditions Treated
Who is Dr. Lavis right for?
Dr. Lavis is a strong fit for adults managing chronic conditions such as diabetes, hypertension, thyroid disease, or autoimmune disorders. Patients who want a root-cause explanation for their symptoms will connect well with his approach. He also serves people pursuing peak health through advanced testing like DEXA scanning, VO2 max, and continuous glucose monitoring. Families and individuals interested in nutrition, hormone optimization, or long COVID care will find his scope broad and highly personalized.
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Frequently Asked Questions
Dr. Lavis treats a wide range of conditions including diabetes, hypertension, high cholesterol, thyroid disease, autoimmune disease, osteoporosis, obesity, cardiovascular disease, IBS, hormone imbalance, mold toxicity, heavy metal toxicity, long COVID, chronic fatigue, and sleep disturbances. His focus extends to cancer prevention and chronic pain management as well.
Dr. Lavis focuses on identifying and addressing the root biological causes of chronic disease. He uses advanced lab testing, nutrition plans, exercise protocols, hormone replacement, and tools like low dose naltrexone to drive measurable health improvements. His goal is reversal of chronic disease, not just symptom management.
Yes. Dr. Lavis holds board certification in family medicine. He also completed formal functional medicine training through the Institute of Functional Medicine and regularly attends conferences to stay current on emerging health science.
Dr. Lavis earned his medical degree from Pacific Northwest University of Health Sciences. He pursued additional training in functional medicine through the Institute of Functional Medicine.
Yes. Dr. Lavis uses an extensive suite of advanced diagnostics. These include DEXA body composition scanning, VO2 max testing, continuous glucose monitoring, coronary artery calcium scoring, micronutrient testing, stool and advanced IBS testing, autoimmune antibody panels, and mold and heavy metal testing.
Yes. Hormone testing and replacement is a core part of Dr. Lavis's clinical toolkit. He uses hormone therapy alongside other interventions as part of a comprehensive, individualized plan for each patient.
Yes. Dr. Lavis tests the recommendations he makes in his own life before bringing them to patients. That hands-on approach to health science has shaped his practice since his high school years.
Yes. Dr. Lavis addresses weight management and metabolic health using advanced metabolic testing, continuous glucose monitoring, nutrition planning, and exercise protocols. He treats underlying contributors such as hormone imbalance, thyroid dysfunction, and insulin resistance.
Doctor profile last updated April 10, 2026