Our Integrative

Practitioners

Our staff is made up of doctors and treatment experts that care. We take a global approach to solutions and look forward to applying all we’ve learned to your overall health.

Director & Integrative Doctor

Denise Cooluris, N.D.

A Bastyr University Seattle alumna and adjunct professor, Hill Park Medical Director and owner Dr. Denise Cooluris represents 10+ years of experience in the field. Serving a variety of roles in the integrative medical field as a local and national speaker, mentor, and writer, especially in the areas of women’s health, naturopathic family medicine, and herbal medicine, Denise offers integrative family medical care with specialized interest in natural gynecology, oncology, and chronic illness. In addition as a naturopathic doctor, she asserts a variety of treatment offerings, rich in real science and traditional wisdom.
“If I were to choose one therapy that works finest above all others, it would be to listen. All patients deserve to have their health concerns heard and respected by a knowledgeable doctor. In addition, the body speaks clearly when it is imbalanced, from a whisper of mild concern, to a scream of serious illness.”

Integrative Naturopathic Oncology

Heidi Lucas, N.D. FABNO

Dr. Heidi Lucas is a highly skilled Naturopathic Doctor specializing in integrative cancer care for the past 20 years. She combines conventional and natural medicine to provide personalized treatment plans to heal from the side effects of treatments, enhance treatment outcomes, strengthen the body, improve quality of life, and enhance overall health.

Dr. Lucas provides consultations for cancer patients and their families in all stages of cancer from recent diagnosis and active treatment to maintenance phase, as well as those with a strong family history of cancer. Many of her cancer patients continue in her care for ongoing family medicine concerns as Dr. Lucas is known for her depth as a clinician and her commitment to patients’ lifelong wellness.

Dr. Lucas completed her doctorate at Bastyr University and a rigorous two-year oncology based residency at Seattle Cancer Treatment and Wellness Center, where she was invited to continue as a staff physician for 6 years and received her board certification in naturopathic oncology care, earning a position as a Fellow of the American Board of Naturopathic Oncology (FABNO). She continued as an integrative oncology physician associate at Lifespring Cancer Treatment Center. She is a committee member of the Oncology Association of Naturopathic Physicians and an active member of the California Naturopathic Doctors Association.

Dr. Lucas has worked alongside oncologists and conventional physicians for the entirety of her career, and is frequently sought by conventional oncologists for her expertise in integrative oncology and natural medicine. She is an active educator and speaker of integrative oncology at leading cancer centers including the Hearst Cancer Resource Center, Leukemia Lymphoma Society, Oncology Nursing Society, American Cancer Society, Gilda’s Club, Cancer Lifeline, Rooted SB, Bastyr University, and many hospitals around the country.

As a naturopathic doctor, specializing in oncology, Dr. Lucas offers expert care in research and clinically based nutrition, evidence based and historical uses of botanical medicine, mistletoe therapy, integrative oncology IV therapy, individualized meditation instruction, as well as exercise plans and therapeutic yoga to optimize immune function and stress management.

Dr. Lucas believes in nutrient-dense therapies and is a strong advocate of farm to table sustainability, which is advocated in her incredible detail to phytonutrient treatment plans down to specific vegetable varieties. As a certified Therapeutic Yoga and Meditation teacher, Dr. Lucas innately understands the body’s capacity to heal and embodies this practice herself in her own way of life.

“Every patient is an individual with their own story and voice. I use a multifaceted approach to treatment that includes engaging the mind, heart and physical body.”

Integrative Family Medicine, Women’s Health, Pediatrics

Meghan Kemnec, N.D.

Dr. Meghan Kemnec is a naturopathic doctor, functional medicine expert, and pediatrician. She is passionate about improving the health of the entire family, knowing that the wellness of our children begins with our health before conception. She teaches you how to take charge of your health with lifestyle changes and a blend of both natural and conventional therapies.

Dr. Kemnec specializes in pediatrics and women’s health from preconception to menopause. Her clinical interests include balancing hormones, immune health, digestive disorders, and endocrine disorders including diabetes and hypothyroidism, as well as respiratory health. She is trained in IV nutrient therapy, Perineural Injection Therapy, and PRP.

Dr. Kemnec holds a Doctorate in Naturopathic Medicine (ND) from Bastyr University and a BS from the U.S. Naval Academy in Annapolis, MD. After graduating with her ND, Dr. Kemnec completed a competitive family practice residency at the Bastyr Center for Natural Health in Seattle, WA. She is also a Diplomate of the American College of Lifestyle Medicine.

When she is not at practice, she enjoys spending time hiking and at the ocean with her family.

Men’s Health, Urology, Gastroenterology, and Nephrology

Eric Yarnell, N.D.

Eric Yarnell, ND, RH(AHG) (Bastyr University, 1996) is a researcher and professor at Bastyr University and has been in practice for 25 years, focusing on and mentoring student doctors in men’s health, urology, gastroenterology, and nephrology, with a heavy emphasis on herbal medicines. Dr. Yarnell works to find the underlying causes of conditions and to use whatever tools are needed (preferably natural ones, saving conventional approaches only for those few cases where they are truly necessary) to support healing. 

Dr. Yarnell is chief creative officer of Wild Brilliance Press, president of Heron Botanicals, and CEO of Red Root Pharmaceuticals. He is a co-founder of the Boucher Institute of Naturopathic Medicine in Vancouver, BC. He previously served as chair of the department of botanical medicine at the Southwest College of Naturopathic Medicine. 

He has over 150 published medical articles and is the author of many of the definitive textbooks used to teach naturopathic doctors including Natural Approach to Urology 2nd ed, Natural Approach to Prostate Conditions 2nd ed, Natural Approach to Gastroenterology 2nd ed, and the forthcoming Naturopathic Nephrology.

He is a highly desired keynote speaker at educational seminars and has been the recipient of four distinguished lifetime awards in the Naturopathic Profession in recognition for his outstanding contributions to the field of natural medicine, research, botanical medicine, and education.

American Association of Naturopathic Physicians Vis Award (2014)
Naturopathic Medical Student Association Faculty of the Year (2018 and 2020)
Gastroenterology Association of Naturopathic Physicians Borborygmus Award (2020)

“Nothing is more satisfying than really listening to someone’s whole story, and helping them discover and fix the underlying cause of their problem.”

Sports & Performance Medicine, Women’s Health

Brandi Holmes, N.D.

Dr. Brandi Holmes is a licensed naturopathic doctor in California and Arizona specializing in personalized, integrative care for active women and athletes. With a passion for optimizing performance, preventing injury, and restoring balance, Dr. Holmes offers a holistic approach that connects the dots between hormones, musculoskeletal health, nutrition, and mindset. Her mission is to empower each patient to feel strong, energized, and in sync—on and off the field.

A lifelong athlete, Dr. Holmes began competing in kindergarten and continued through college with a primary focus in track and field, specializing in sprints and hurdles. She also played softball, lacrosse, tennis, and trained in martial arts. Her competitive drive and “no pain, no gain” mindset led to athletic success—but also a cycle of repetitive injuries, including shin splints, stress fractures, and ankle sprains. These experiences sparked her early interest in injury prevention and whole-body wellness.

Dr. Holmes pursued dual undergraduate degrees in Kinesiology (with a focus on physical therapy) and Cellular & Molecular Biology at San Diego State University. During this time, she gained five years of hands-on clinical experience at a physical therapy practice, where she developed skills in rehabilitative therapies such as aquatic therapy, Pilates, electrotherapeutic modalities, and functional movement assessments.

Her desire to practice integrative medicine led her to Bastyr University California in San Diego, where she earned her Doctorate in Naturopathic Medicine. Her training included botanical medicine, nutritional therapy, targeted supplementation, pharmaceuticals, and lifestyle counseling, as well as advanced physical medicine techniques including soft tissue manipulation, therapeutic exercise, and electrotherapy.

Dr. Holmes takes a systems-based approach to sports and performance medicine, recognizing that true recovery and peak performance require a deeper understanding of how all organ systems interact with the musculoskeletal system. She is especially passionate about supporting hormonal balance, gut health, and metabolic optimization in active individuals.

Dr. Holmes partners with patients to create personalized, evidence-informed plans that support both short-term recovery and long-term vitality. Whether you’re an athlete striving for peak performance or someone ready to feel at home in your body again, Dr. Holmes is here to help you thrive—every step of the way.

“Optimal athletic performance isn’t just about muscle strength and flexibility—it’s a symphony where every body system plays a part, from digestion fueling endurance to hormones fine-tuning recovery. When all systems work in harmony, athletes unlock their true potential.”

Dr. Johnson is no longer seeing patients, but remains academically involved with her colleagues at the center.

Integrative Holistic Physician

Lois C. Johnson, M.D.

With 30 years of experience combining alternative and herbal medicine with the best of conventional medical care, Dr. Lois Johnson is an integrative holistic physician with board certification in Internal Medicine. Her specialties include oncology, complex and multiple diagnoses, women’s health issues, bio-identical hormones, chronic fatigue, fibromyalgia, hepatitis C, and Lyme disease.
“The healing journey always involves a story. When I really hear the story, solutions often become visible. My personal passions for art, poetry, and nature inform my work on a daily basis. My own experience as a cancer survivor has deepened not only my empathy but my practical knowledge of what people really need during difficult times. I appreciate the truth and beauty of the human experience with all its joys and sorrows, in times of new growth and in times of letting go that make up the cycle of life.”