Optimize Your Health:
Men's Testosterone Replacement, Peptide Therapy, &
Gut Health Tailored to You
Virtual Care in Washington, Oregon, Colorado, and Idaho
Serving patients virtually in all of Washington, Oregon, Colorado, and Idaho, Metta Wellness Northwest offers expert telehealth care for gut health, men’s testosterone replacement therapy, peptide therapy, functional medicine, healthy aging, optimal wellness, weight loss, and thyroid replacement. Whether you're struggling with, low testosterone, weight gain, digestive issues or low energy, our functional medicine approach uncovers the underlying causes of health issues and delivers personalized treatment plans tailored to your needs. No matter where you are in these states, we're here to support your health journey toward long-term well-being.
Dr. Brendan Tennefoss
DNP, AGPCNP-BC, ACHPN, AFMC
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Nurse Practitioner, Dr. Brendan Tennefoss is passionate about integrated medicine, blending functional and conventional therapies with modern medical practices to enhance men's health. Specializing in testosterone replacement therapy, thyroid, and gut health, he takes a whole-person, holistic approach to uncovering and addressing the underlying causes of health concerns. With board certifications in Adult-Gerontology Primary Care and Advanced Hospice & Palliative Nursing, along with credentials as an Applied Functional Medicine Health Coach, Brendan leverages his professional expertise and personal experience with gut health challenges to empathize with patients and effectively craft a treatment plan that supports optimal wellness.
Credentials: Adult-Gerontology Primary Care Nurse Practitioner Board Certified by ANCC Advanced Certified Hospice & Palliative Nurse by HPCC Applied Functional Medicine Coach by the School of Applied Functional Medicine Instructor/Course Creator The Clinical Genetics & Genetic Testing Course with The Elite NP Instructor/Course Creator The Advanced Functional and Laboratory Testing Course with The Elite NP Speaker and Educator The Elite NP Annual Conference Doctorate of Nursing Practice (DNP) - Vanderbilt University Masters of Science in Nursing (MSN) - Vanderbilt University Bachelor of Science (BS) - University of Washington
Dr. Demetria Tennefoss
DNP, WHNP, AGPCNP-BC, MBA
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Nurse Practitioner, Dr. Demetria Tennefoss, brings a unique passion for women's health and hereditary cancer genetics to her practice. She excels in preventative healthcare, empowering patients through comprehensive cancer risk assessments and functional medicine focused on long-term health solutions. Board-certified as both a Women’s Health and Adult-Gerontology Primary Care Nurse Practitioner, she holds advanced certifications in genomic cancer risk assessment, radiology, and colposcopy. Demetria is also a renowned educator and speaker, sharing her expertise through courses on genetics. Her patient-centered approach ensures personalized care tailored to each individual’s needs, fostering empowerment and lifelong wellness.
Credentials: Adult-Gerontology Primary Care Nurse Practitioner Board Certified by ANCC Womens Health Nurse Practitioner Board Certified by NCC Genomic Cancer Risk Assessment certification by the City of Hope Radiology Technologist - American Registry of Radiologic Technologist Colposcopy certified - ASCCP Instructor/Course Creator The Clinical Genetics & Genetic Testing Course with The Elite NP Abstract Presentator at AGA Cancer 2023 - "Assessment of an Early Version Blood-Based Multimodal CFDNA Assay for the Detection of Colorectal Cancer Incorporating the Assessment of CTDNA Genomic Alterations and Epigenomic Modifications." Doctorate of Nursing Practice (DNP) - Vanderbilt University Masters of Science in Nursing (MSN) - Vanderbilt University Bachelor of Science (BS) - Eastern Tennessee State University​
Testosterone isn’t just about muscles and libido, it’s a crucial hormone that supports energy, mood, focus, metabolism, and overall vitality. When levels dip, so does your sense of well-being. At Metta Wellness Northwest, we take a functional approach to hormone health—helping men optimize testosterone naturally or through tailored replacement therapy. Whether you're struggling with low energy, brain fog, decreased motivation, or changes in body composition, we’re here to help. Let’s get your strength, clarity, and drive back.
What is Integrative Medicine?
Functional medicine is an integrative patient-centered approach to healthcare that focuses on identifying and addressing the underlying causes of illness and dysfunction in the body. It considers the unique biochemical makeup of each individual and seeks to restore balance and optimize overall wellness. By addressing these imbalances, functional medicine practitioners develop personalized treatment plans that promote long-term health and prevent future health issues.
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​At Metta Wellness Northwest, our integrative medicine approach blends cutting-edge diagnostic tools with individualized care to help patients achieve optimal wellness. Whether you're looking for functional medicine near you for hormone balance, gut health, healthy aging, or chronic disease prevention, our team is dedicated to guiding you through every step of your health journey.
Peptides play important roles in cellular repair, metabolism, inflammation, sleep, cognitive function, and overall vitality. When these pathways slow down, many people start to feel “off” without knowing why. Low energy, poor recovery, weight changes, disrupted sleep, slower healing, and increased stress can all be signs that your body may benefit from additional support.
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At Metta Wellness Northwest, we take an integrative, root-cause approach to peptide therapy. We evaluate your symptoms, lab work, and nutrient status, to understand the full picture of what your body needs. From there, we develop a personalized plan using targeted peptide support when appropriate—always grounded in safety, evidence, and individual goals.
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If you’re feeling depleted, burned out, inflamed, or stuck despite your best efforts, you’re not alone—and you don’t have to accept it as your “new normal.” Let’s support your energy, recovery, and resilience, because life is too short to feel like you’re running below capacity.