Meet The Team

Our expert and empathetic staff is ready to serve you on your journey to better health.

Meet Our Doctors and Practitioners

Dr. Michael Karlfeldt

Head Naturopath

Dr. Michael Karlfeldt, ND, Ph.D, is a Board Certified Naturopath (CTN® ) with expertise in IV Therapy, Applied Psycho Neurobiology, Oxidative Medicine, Naturopathic Oncology, Neural Therapy, Sports Performance, Energy Medicine, Natural Medicine, Nutritional Therapies, Aromatherapy, Auriculotherapy, Reflexology, Autonomic Response Testing (ART) and Anti-Aging Medicine. Dr. Michael Karlfeldt is the host of the popular TV show True Health: Body, Mind, Spirit now airing on Amazon Prime.

Dr. Jon Harmon

Certified Neurofeedback

As a young boy, Dr. Harmon received so much benefit from Chiropractic that he decided he wanted to be a Doctor of Chiropractic. This has always been his passion! He attended the University of Utah and has a BS degree in Human Biology. After graduating summa cum laude from the Los Angeles College of Chiropractic in 1989, he settled in Boise where he has been practicing ever since. After experiencing the severe family emotional trauma of the suicide of his eighteen-year-old niece in March of 2010, the murder of his eldest daughter’s husband in March of 2011, his younger daughters started to experience depression, anxiety and insomnia. Counseling and prescription drugs weren’t helping so he decided to find other therapies to help his family. This led to expanding his education and practice to serve individuals with Neurofeedback and his passion to help others. Dr Harmon is Board Certified in Neurofeedback by the BCIA the international standard in biofeedback certification for MDs, Ph.D.’s, Psychiatrists, DOs, DCs and all healthcare professionals.  He is married, father of eight children and grandfather of 21.  He enjoys working out, staying fit, eating healthy, writing poetry, composing songs and spending time with his family.


Dr. Jason Barker

Naturopathic doctor

Dr. Jason Barker is a Naturopathic Doctor. He received his medical training from Bastyr University in Seattle, WA. Dr. Barker’s clinical focus is utilizing integrative medicine to help his patients. Integrative medicine includes the full spectrum of physical, emotional, mental, social, energetic, spiritual, and environmental factors that influence your health. Dr. Barker also takes the time to listen to his patients to understand their healthcare needs better. Dr. Barker is a member of the Medical Academy of Pediatric Special Needs (MedMAPS) and has extensive experience treating children on the Autism Spectrum. He also treats digestive disorders, anxiety and depression, Lyme disease and co-tick infections, auto-immune, allergies, and much more.

“What drew me to Naturopathic medicine was a desire to help people understand their health. People’s hardware is roughly the same. We all have hearts and brains, toes and fingers, blood and tears. Yet every one of us is different. We are shaped by our genetics, our experiences, and our environment. So treating everyone as an individual is the only way I see medicine working properly. I look forward to helping you understand your own health.”

Dr. Stephen Iacoboni

Medical Doctor

An oncologist who has seen many patients through their battle with cancer in his three-decade career, Stephen J. Iacoboni, MD, served his fellowship at the prestigious MD Anderson Cancer Center in Houston Texas, receiving the Outstanding Researcher award and presenting his findings at the American Society of Clinical Oncology. Iacoboni also co-founded St. Mary’s Regional Cancer Center in Walla Walla, Washington, where he lived and practiced for 16 years, leaving to become Medical Director of the Kootenai Cancer Center in Coeur’d Alene, Idaho. In 2010 he returned to Washington to co-direct the Kennewick General Hospital Hematology-Oncology program. Dr. Iacoboni is also the author of the inspirational book, The Undying Soul. 

Dr. Summer Beattie

Naturopathic Physician

Dr. Summer Beattie is a Naturopathic Physician. Born and raised in rural Alaska – which will always hold a piece of her heart. In 2004 she received her graduate degree as a Doctor of Naturopathic Medicine at Seattle’s Bastyr University. She spent nearly eight years in family practice and served two terms on the Board of Directors for the Washington Association of Naturopathic Physicians before accepting a position at a specialty surgery center in Alaska.

Upon returning to Washington in 2015, Dr. Beattie pursued training with physicians and organizations setting the standard of care in Regenerative Medicine, with an emphasis in injection therapy. Other key tools of her practice include IV, ozone, photodynamic therapies, and hormone optimization. Dr. Beattie also has special interest in addressing brain health and supporting patients with chronic and complex illnesses. She has had the privilege of working with and mentoring under well-known leaders in the treatment of vector-borne, mold and toxic exposure illnesses as well as supporting patients with autoimmune and neurodegenerative diseases. Collaborating with clinics to provide broader access of care to more patients looking for uniquely integrative and advanced treatments is part of the mission of One Living.

Distance care has become such an important means of access for patients to get the support they’ve needed the last couple years. Dr. Beattie is excited to be able to offer this service through telemedicine for the Karlfeldt Center.

Dr. Beattie’s experience has cultivated a deep passion for giving patients foundational resources and support for overall health and not simply offering procedures and prescriptions or generic treatment plans. Dr. Beattie builds protocols with attention to bioregulatory medicine tenets and includes the use of energetic therapies (such as sound, frequency, light) along with integrative technological and diagnostic advancements.

When not in clinic, Dr. Beattie leads a team of instructors training providers in many of the modalities she uses in practice. Equipping and building a collaboration of providers in order to make this medicine available to more patients is some of the most rewarding work Dr. Beattie does.

Her free time is spent adventuring with her two young children, husband, and dog! Outdoor activities, music, and art are a constant part of the family’s busy life. 

Dr. Beattie is licensed in WA, MT, and ID.



Nurse Practitioner

RoRy Ingram FNP-BC, MSN, CCRN, PHN is a board-certified nurse practitioner. She graduated with honors from Loma Linda University with her bachelor’s degree in nursing and earned her master’s degree from Samuel Merritt University in Oakland, California. She completed her residency with the Family Medicine Residency of Idaho. RoRy has experience with emergency medicine, hospital medicine, legal nurse consulting, as well as working in conjunction with FEMA for disaster relief. RoRy has a passion for health promotion and prevention, focusing on an integrative approach to medicine encompassing the whole person, aiming for optimal health. Her practice includes anti-aging medicine, bioidentical hormones, weight loss, women’s health and men’s health. She also performs shock wave therapy, joint injections, intravenous vitamin and mineral therapies. She was inducted into the Sigma Theta Tau Honor Society of Nursing and is a member of the American Academy of nurse practitioners, nurse practitioners of Idaho, and the American Association of critical care nurses.

Caroline de los Reyes, NTP, RWP, APN

Nutrition Therapy Practitioner

Caroline is a certified Nutritional Therapy Practitioner (NTP) and Restorative Wellness Practitioner (RWP).  She is passionate and strives to assist clients in finding their optimal health and true vitality through functional nutrition.  She understands bio-individuality and creates a practical application for nutrient balancing and food planning.  She customizes protocols for complex digestive, autoimmune, and hormonal issues, through using advanced lab testing.  She is a catalyst for transformation, integration, and wholeness.  Using her emphatic and intuitive gifts, as she practices Applied Psycho-Neurobiology (APN). 

Jennifer Whitney

Certified Holistic Nutritionist

Jennifer Whitney is a Certified Holistic Nutritionist, trained in western and eastern nutrition.  She graduated from the Wellspring School of Healing Arts in 2012 and became a Certified Gaps Practitioner in 2014.  She is also trained in Applied Kinesiology, Laser Energetic Detoxification (LED) and Laser Desensitization Techniques (LDT).  She specializes in designing nutritional programs to best fit her clients’ needs.  Her areas of specialty are in autoimmune, gastrointestinal, neurological, sports and oncology nutrition. She has hosted Gaps retreats, taught cooking classes, given public speeches and appeared weekly on the Doctor Michael Show from 2013-2014 teaching custom recipes and giving interviews on nutritional topics such as the Gaps diet. She is passionate and dedicated to helping people heal their body through food and nutrition.


Natalie Hart, CTNC

Heart Sound Recorder Specialist

Certified Transformational Nutrition Coach

Natalie Hart has a B.S. degree in Exercise Science and Wellness from Brigham Young University. She has worked as a Certified Personal Trainer, Nutrition Specialist, and Fitness Manager. She spent six-plus years as a Clinical Specialist for Medtronic’s Cardiac Rhythm and Disease Management division in Southern California, Salt Lake City, and various other cities, supporting patients with pacemakers and implantable defibrillators (ICDs) during and after surgery. She is most recently certified as a Transformational Nutrition Coach, which focuses on healing the body nutritionally, mentally, and spiritually.

Natalie’s career has been devoted to assisting people to achieve wellness with a particular emphasis on heart health. Currently, she focuses on using newly enhanced wellness technology called the Heart Sound Recorder to analyze the rate, rhythm, and tone of the heart to identify nutrient deficiencies.

What area of health can we help you improve? Schedule an appointment today in Meridian, Idaho.