Hi, I'm Dr. Kate Mattax (she/her), a licensed naturopathic physician at One Connection Healthcare. I provide weight-inclusive naturopathic primary care and specialize in medical management of eating disorders and pelvic floor therapy. Patients also seek me for support with digestive concerns, hormone health, chronic illness, and complex medical conditions.
Whether you're looking for a trusted primary care provider, navigating a chronic condition, or hoping to better understand how different symptoms may be connected, I'm here to help. I strive to build a care relationship where you feel heard, respected, and supported through every stage of your health.
Kate Mattax, ND Naturopathic Primary Care, Eating Disorder Medical Support & Pelvic Floor Therapy
BALLARD, SEATTLE + WASHINGTON TELEHEALTH
Dr. Claire Hannes, ND
Weight-Inclusive Primary Care
Eating Disorder Medical Support & Pelvic Floor Therapy
Dr. Kate Mattax provides thoughtful, collaborative naturopathic care for patients seeking primary care, eating disorder medical support, pelvic floor therapy, and care for complex health concerns at One Connection Healthcare in Ballard, Seattle.
Meet Dr. Kate Mattax
I believe the relationship between a patient and their healthcare provider is something special. One of my favorite parts of practicing at One Connection Healthcare is that I get to show up as myself, you get to show up as yourself, and together we can explore your healthcare needs in a way that centers you as the expert in your lived experience.
After earning my Doctorate of Naturopathic Medicine from Bastyr University, I completed a three-year residency at One Connection Healthcare under the mentorship of Dr. Lily Stokely and Dr. Michael Rak. My training has included private practices, outpatient surgical centers, federally qualified health centers, and community education settings, allowing me to care for patients across a wide range of backgrounds and health concerns.
Today, I provide comprehensive primary care in Seattle, Washington while helping patients navigate everything from preventive wellness to complex chronic conditions with curiosity, collaboration, and respect.
A Weight-Inclusive & Collaborative Approach to Primary Care
I recognize that many people feel both under-supported by the medical system and overwhelmed by wellness culture. My goal is to offer something different: thoughtful, evidence-informed care that meets you where you are, helps identify what matters most, and creates realistic next steps that fit your life.
I love turning medical complexity into something more understandable. You'll often find me sketching diagrams, reviewing lab trends, or mapping hormone pathways during visits so we can better understand how your symptoms fit together. My care is grounded in Health at Every Size®, and I consider the many factors that influence health—including racism, sexism, ableism, and socioeconomic barriers—when creating individualized treatment plans.
Healthcare works best when providers work together. I regularly coordinate care with physicians, therapists, dietitians, physical therapists, and other members of your healthcare team to help ensure your care feels connected, comprehensive, and centered around your goals.
Areas of Clinical Focus
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I provide comprehensive naturopathic primary care, including annual wellness visits, preventive screenings, Pap smears, chronic disease management, and ongoing support through every stage of life. My goal is to build long-term relationships where you feel comfortable asking questions and confident that your care is truly coordinated.
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Eating disorder recovery often requires thoughtful medical support alongside nutrition and mental health care. I provide outpatient medical management, including lab monitoring, medication management, medical stabilization, and close collaboration with therapists, dietitians, and higher levels of care when needed.
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Pelvic floor concerns are common, but they shouldn't be something you simply have to live with. I support patients of all genders who are experiencing pelvic pain, urinary symptoms, constipation, postpartum recovery, pain with intimacy, prolapse, and core dysfunction through an integrative approach that combines medical care with hands-on therapies.
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Hormones influence nearly every system in the body. Whether you're navigating menstrual concerns, perimenopause, menopause, fertility, or other hormonal changes, we'll work together to better understand what's happening and create a treatment plan that supports your health and long-term wellbeing.
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When symptoms don't fit neatly into one diagnosis, it can feel frustrating and exhausting. I enjoy helping patients connect the dots between complex concerns, including digestive conditions, chronic pain, MCAS, SIBO, constipation, and other multisystem illnesses, while building practical treatment plans together.
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In addition to primary care, I offer hands-on treatments including craniosacral therapy, visceral manipulation, trigger point injections, low level laser therapy, and other integrative techniques to support pain, mobility, healing, and overall function.
Explore Craniosacral Therapy →
Explore Visceral Manipulation →
Background & Credentials
I earned my Doctorate of Naturopathic Medicine from Bastyr University after completing my undergraduate degree at Northwestern University. Following graduation, I completed a three-year residency at One Connection Healthcare under the mentorship of Dr. Lily Stokely and Dr. Michael Rak, where I developed advanced training in primary care, eating disorder medical management, and collaborative, whole-person healthcare.
My additional training includes certification in Integrative Pelvic Care, with mentorship under Dr. Kathryn Kloos. I also have clinical experience across private practices, outpatient surgical centers, federally qualified health centers, and community-based health education, allowing me to care for patients with a wide variety of medical needs.
I am a member of the Association for Size Diversity and Health (ASDAH) and the Naturopathic Academy of Primary Care Physicians (NAPCP). I remain committed to ongoing education so I can continue providing evidence-informed, compassionate care that meets each patient where they are.
Licensure:
Dr. Kate Mattax is licensed as a Naturopathic Physician in Washington State. WA License #: NT61425166
Insurance and Care Access
One Connection Healthcare accepts a variety of insurance plans for naturopathic primary care services. Telehealth appointments are also available for many patients throughout Washington State.
For questions about insurance coverage, scheduling, or becoming a new patient, our team is happy to help.
Frequently Asked Questions
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During your first visit, we'll spend time mapping your health history, reviewing labs or previous testing, identifying patterns, and building a realistic plan forward together. Many patients leave feeling like they finally have a clearer understanding of how their symptoms fit together. My visits are thorough, collaborative, and yes—occasionally fun.
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Yes. Dr. Mattax specializes in outpatient eating disorder medical management and frequently collaborates with therapists, dietitians, psychiatrists, and other providers as part of a patient’s treatment team.
Learn more about One Connection Healthcare’s Approach to Medical Management of Eating Disorders →
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Many people think pelvic floor therapy is only for pregnancy or postpartum recovery, but it can support a wide range of concerns for people of all genders. You may benefit if you're experiencing pelvic pain, urinary leakage, constipation, pain with intimacy, prolapse, core instability, or discomfort with everyday movement.
As a certified provider of Integrative Pelvic Care, I take a whole-person approach to understanding what's contributing to your symptoms and create a treatment plan that's tailored to your body, goals, and comfort level.
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Yes. As a licensed naturopathic physician in Washington State, Dr. Mattax can prescribe medications when appropriate as part of an integrative treatment approach.
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Yes. One Connection Healthcare offers telehealth appointments for many patients throughout Washington State.
What Keeps Me Joyful
Outside of the clinic, I find joy in the little things: a perfectly foamy cappuccino, the Chicago skyline, being on or near the water, family dance parties, and the excitement of discovering a brand-new special interest. Those moments of curiosity, connection, and play help keep me grounded, and they allow me to show up fully for the people I care for each day.
Work with Dr. Mattax |
Work with Dr. Mattax |
Ready to Make Sense of Your Health?
Whether you're looking for a trusted primary care provider, support managing an eating disorder, pelvic floor therapy, or help navigating complex symptoms, I'm here to help. Together, we'll turn medical complexity into manageable next steps that support your health and your life.
