Meet The Team

Dr. Seth Burrell is a licensed general practitioner of naturopathic medicine. His specific areas of interest are diagnostic ultrasound and general medicine with an emphasis in treating those who suffer from chronic diseases. Dr. Burrell trained in naturopathic medicine at the National College of Natural Medicine in Portland, Oregon. While at NCNM, Dr. Burrell was selected for a specialized one-year mentorship and maintained a three-year apprenticeship with Dr. Ed Hofmann-Smith, former Dean of NCNM, where he gained many hours of clinical training in obstetrical, gynecological, and basic diagnostic ultrasound.

CIMT Screening in Portland Oregon Dr. Burrell also received specialized training from the University of Wisconsin Medical School for Carotid IM Thickness (CIMT) screening. The CIMT training program at UW is operated by the medical team that wrote the ASE consensus statement for CIMT assessment.

Naturopathic Physician & General Practice

Dr. Burrell has a general naturopathic practice at Canyon Medical Center in the Portland, OR area where he employs unique therapies in combination with nutritional and lifestyle counseling to address the full dynamic of individual naturopathic healthcare: the mental, emotional, the physical and the spiritual. He enjoys family practice with a focus on establishing goals and treatment plans that empower his patients to take charge of and maximize their health. “I love to help those seeking a new level of health: patients with chronic disease, elite athletes looking to elevate their skills to the next level, the professional seeking the ability to maintain health and excel in his or her industry. I do this by utilizing a unique approach rooted in supporting the natural processes of the body, helping the individual restore normal function, and guiding him or her on the path to health and well-being.”

I believe strongly in our body’s innate capacity to heal, and as a naturopathic physician and midwife, I feel that it is my role to guide this process with minimal intervention. I utilize therapies that support the body’s capacity to heal, including nutrition, botanical medicines, lifestyle changes and homeopathy. I also realize there are situations when greater intervention is needed and use pharmaceutical drug therapies when necessary. I am comfortable managing patients on multiple medications. I believe that as individuals, we each have the greatest control over our own health and wellbeing, and I see myself not only as a physician but also a coach, motivating and empowering my patients to prioritize healthy choices.

A strong background in biology, chemistry and research, balanced by a firm belief in the innate wisdom of the natural world, guide my practice of pediatrics, women’s health and reproductive health, including fertility treatments, preconception health and care through pregnancy and childbirth. I also specialize in primary care for children with behavioral disorders including ADHD, working with a network of local specialist providers to find solutions that allow balance and success for these children.

I am currently accepting new primary care patients (adult and pediatric), birth and prenatal clients, and adults with ADHD.

Dr. Karen Celeste DeWitt is a licensed naturopathic physician and midwife practicing family medicine and midwifery at Canyon Medical Center in Portland, Oregon.

Dr. Leslie Hamlett gives you control of your health while providing your body with the tools it needs to heal. It is important to her that her patients understand their bodies and the processes of health or disease that they are experiencing; patient education is as important as optimizing physiology.

“To me, being a naturopathic doctor and midwife is about forming relationships with people by listening, understanding and continually asking why: why does a person have these symptoms, why does she feel this way, why are these patterns present? I provide the kind of care I would want for my own family and friends, using a compassionate, safe and individualized approach.”

Dr. Hamlett was drawn to medicine from an early age. Her family espoused fresh air, whole foods and restful sleep as the backbone of a healthy life. Within this framework, Dr. Hamlett learned that an effective medicine is one that is personalized and participatory, always maintaining the goal of gently preserving equilibrium. She believes that there is always another level of wellness to achieve.

Dr. Hamlett received her B.S in Psychobiology from UCLA. It was during these undergraduate years that Dr. Hamlett realized the interrelationships of mind and body and their effects on health. She is a graduate of the National College of Natural Medicine where she received her doctorate in naturopathic medicine and certification in Natural Childbirth. Dr. Hamlett’s practice centers on pediatrics, aesthetic medicine, PRP, women’s health, naturopathic midwifery and minor surgery. She loves to help build healthy families, whether in the form of preconception programs, fertility work or through well child visits, watching the babies she delivered grow up.

Dr. Vanessa Lyon is a Naturopathic Physician who specializes in women’s health, midwifery/natural childbirth, pediatrics, and mental health medication management. Over the last several years, Dr. Lyon has dedicated a large portion of her time to caring for those with hEDS, MCAS, and POTS. In addition, she maintains a general family practice that can see the whole family for acute or chronic medical care. Dr. Lyon believes in meeting each patient where they are at, tailoring treatments to each patient’s lifestyle and needs. When seeing Dr. Lyon you can expect a variety of modalities to be used including bio-identical hormones, botanical medicine, nutraceuticals, nutrition, and pharmaceuticals. She graduated from the National College of Natural Medicine, where she completed a mentorship in women’s health, which focused on gynecology, infertility, thyroid disorders, chronic care, and autoimmune disease. While attending NCNM, Dr. Lyon also completed a two-year course with the New England School of Homeopathy and a three-year externship specializing in natural childbirth and pediatrics.

Dr. Lyon was born and raised in Salt Lake City, UT. As a child, her mother instilled the importance of a healthy-lifestyle through nutrition, natural medicine, and exercise. After discovering a love of the Northwest, Dr. Lyon moved to Portland, OR to attend the University of Portland. There, she obtained a degree in psychology and biology, with the intention of going to medical school. While attending UP, Dr. Lyon participated in the development of research manuals and protocols for the Helfgott Research Institute, affiliated with the National College of Natural Medicine. It was at this time the door to natural medicine was opened.

When not seeing patients, Dr. Lyon loves to spend time with her family and too many animals to count, where they enjoy camping in the Northwest, gardening, cooking, reading, and raising chickens.

Dr. Nadia English-Williams is a dedicated Naturopathic Physician and Midwife, committed to empowering her patients with knowledge for optimal health. Specializing in nutrition and botanical medicine, she guides patients through various conditions from neonatal to adult stages. She pursued her passion for medicine at Spelman College before completing her training at the National University of Natural Medicine. Driven by her passion for serving her community, she is an advocate for health and wellness for all and strives to reduce further harm to communities that have been historically marginalized and economically disenfranchised. Dr. Nadia believes that vibrant health begins with a harmonious relationship with our environment. Through her holistic approach, she seeks to enhance the well-being of the folks that she works with, addressing not only physical symptoms but also the underlying imbalances that contribute to illness. Currently pursuing a second doctorate in Applied Medical Anthropology, her research targets maternal health disparities, particularly among Black women. Beyond her professional pursuits, Nadia cherishes family time with her husband and children and indulges in gardening and nature exploration.

Dr. Emerald Mansfield’s practice is focused on midwifery, women’s health, pediatrics, and bodywork (craniosacral and Holistic Pelvic Care™). Her intention is to serve families in helping improve their quality of life. Each patient is unique and her treatment plans focus on collaborating for better health, often utilizing a combination of lifestyle, natural and conventional medicines, and bodywork.

Her interest in birth began at the age of sixteen when she witnessed her first birth and was left in awe of the birth process and power of the female body. A career in naturopathic medicine was a natural choice because it encompasses midwifery, and reinforced her belief in prevention. By working with growing families she can be of long-term service to families.

She received her Doctorate in Naturopathic Medicine and a Certificate in Natural Childbirth from the National College of Natural Medicine (NCNM), the nation’s oldest surviving naturopathic college in 2014. She has been attending births since 2011, and received her midwifery endorsement by the Oregon Board of Naturopathic Physicians in 2017.

Dr. Emerald lives in Beaverton, Oregon with her son and daughter. Most of her free time is spent dancing or teaching bachata, with her children, at her church, traveling, and watching Star Trek. She enjoys learning new things and sharing what she has learned.

Dr. Lara Pate (she/they) is a licensed Naturopathic Doctor and Midwife in Oregon, with a Master’s degree in Clinical Nutrition. She completed her medical and nutrition training at the National University of Natural Medicine and received midwifery training with the midwives at Canyon Medical Center and other midwives in the greater Portland area.

Dr. Pate is currently accepting new primary care and midwifery patients. Her clinical interests include fertility and birth, pediatrics, family medicine, and weight and metabolic health, with an emphasis on nutrition, preventive care, and sustainable approaches to overall wellbeing. She works with patients throughout life, supporting both foundational health and more complex medical needs when they arise.

Dr. Pate’s approach draws on evidence-based naturopathic medicine, incorporating botanical medicine, lifestyle counseling, and appropriate medical therapies when indicated, always guided by root-cause assessment and patient goals. She believes education is one of the most powerful tools for health and prioritizes informed, collaborative decision-making that respects patient autonomy.

Originally from the East Coast just outside of Washington, DC, Dr. Pate earned her undergraduate degree in Chemical Engineering from the University of Alabama, bringing a strong analytical foundation to her naturopathic medical practice. Outside of clinic, she enjoys yoga, sunshine, listening to music, and spending time with her cat, Marbles.

Dr. Kiara Cordes earned her Doctor of Naturopathic Medicine, Master’s in Acupuncture with a specialization in Chinese Herbal Medicine, and certification in Natural Childbirth and Midwifery from the National University of Natural Medicine (NUNM) in 2025.

She has dreamed of becoming a doctor since childhood. Her early interests in neurosurgery and herbal support for neurological conditions were shaped by witnessing a close family member undergo cancer treatment.

While completing her Bachelor of Science in Biological Sciences at Arizona State University in 2018, Dr. Kiara was introduced to acupuncture and Chinese medicine—a turning point that ultimately led her to pursue natural medicine and continue her training at NUNM.

At NUNM, she deepened her passion for Chinese medicine and discovered a profound calling in reproductive health and midwifery. Through an integrative approach to care, Dr. Kiara is especially passionate about reproductive health and fertility and is deeply committed to education and reproductive justice for marginalized and economically disadvantaged communities. She believes every patient has a story beyond their diagnosis and prioritizes addressing root causes rather than symptoms alone.

In addition to reproductive care, Dr. Kiara enjoys supporting patients with chronic pain, hormonal imbalances, gastrointestinal concerns, and mental health conditions, and she is a strong advocate for Health at Every Size.

Dr. Kiara is currently teaching Anatomy and Physiology at Central Oregon Community College, one of her alma maters, and finds great fulfillment in mentoring the next generation of healthcare professionals.

Outside of the clinic, she enjoys exploring Portland’s food scene, reading a good book with her cat, and spending time with family, friends, and her community.

Julia is an indigenous woman raised in Northern Nevada and is now living in the PNW. She has a love for this beautiful area and it's people. She came into birth work after learning and healing from the news of being diagnosed with stage IV Endometriosis, making it difficult to become pregnant herself.

She loves supporting births as well as caring for the new parents in the postpartum period. Helping those heal and succeed in new parenthood is amazing and she feels privileged to be a part of these life changing times supporting hundreds of families!

Julia is a Certified Professional Midwife (CPM) specializing in out of hospital births, and is licensed in the state of Oregon. She has a background in childcare, child development, birth and postpartum doula, placenta encapsulation, infant massage, formula feeding specialist, as well as previously being a pharmaceutical technician, and pastry chef!

In her spare time she is also a crafter, as well as a big fan of true crime, reading, and spending time with her husband and fur babes!

Ashley Treadwell is an International Board Certified Lactation Consultant (IBCLC), blogger on the topic of breastfeeding, and advocate for judgment-free feeding support for all parents. Ashley completed her lactation consultant training and certification at University of California, San Diego, including clinical training at the Sharp Mary Birch Hospital for Women and Newborns and the outpatient clinic at Kaiser Family Health Services. She also holds a Bachelors in Sociology from University of California, Davis. Ashley’s family moved to the beautiful city of Portland during the summer of 2016, where she continues her work helping families meet their feeding goals. Prior to moving to Oregon, Ashley lived in Southern California where she worked as a lactation specialist for the San Diego Breastfeeding Center.

Ashley is skilled in assessing your baby for tethered oral tissue ("tongue and lip tie"), helping babies transition from bottle to breast, premature infants, low milk supply, painful breastfeeding, and anxiety and insecurity surrounding breastfeeding challenges. Cascadia Lactation practices inclusivity and is experienced in working with LGTBQIA families.

Clinic Administrator

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