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Meet Our Doctors and Practitioners

Dr. Michael Karlfeldt​
Dr. Jason Barker
Dr. Jeff Hartford
Dr. Thomas Klassy
Caroline De Los Reyes, NTP, RWP, APN
Monica Blough
Jennifer Whitney, CHN, GAPS
Natalie Hart, CTNC, Heart Sound Recorder Specialist
Carter Burenheide

Dr. Michael Karlfeldt

Head Naturopath

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. Jason Barker, NMD

Naturopathic Medical Doctor

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. Jeff Hartford

Naturopathic Doctor

He did his residential internship for Family Practice right here in Boise and continued to have an individual practice in Boise for years. Dr. Hartford also had the opportunity to practice at medical clinics in Council and Cascade.

Several years ago, Dr. Hartford left allopathic medicine to be trained as a traditional Naturopathic Doctor, receiving his ND decree out of India. He then did an 18-month fellowship with The Karlfeldt Center. During his fellowship, he mastered autonomic response testing, or ART, under Dr. Dietrich Klinghardt, and learned European Neurotherapy technics. 

Dr. Hartford is certified in Ozone and Prolozone by Dr. Frank Shallenberger and has a broad spectrum of experience in many areas relating to naturopathic and allopathic health. 

He looks forward to serving the Treasure Valley and TKC patients through:

Children’s well check-ups

Women’s health 

Family medicine 

Oncology support




Dr. Hartford and Szilvi believe food is medicine and enjoy living on their fully sustainable farm with a large organic garden, and dairy. 


Dr. Thomas Klassy, DC

1st Diplomate and Resident in Addictionology and Compulsive Disorders, Industrial Disability Examiner, Qualified Medical Examiner (Candidate)

Ever since he’s devoted his life to the pursuit of how and why we get ill or sick and how that all ends up as Disease. Utilizing his knowledge and Clinical experiences from many disciplines, all around our world, Dr. Thomas has truly developed an Integrated approach to true healing, Physical, Chemical, and Emotional (Mental and Spiritual), and how to treat the causes utilizing Biochemistry, Neurology, and Nutrition. Dr. Thomas’ goal has been to align and assist each patient and as many as possible to achieve Health and Wellness. 

Dr. Thomas is forever in search of new and emerging ‘medicines and techniques’ in this quest. 

Some of Dr. Thomas’ focus areas:

  • Reward Deficiency Syndrome, ADD/ADHD to Autism spectrum
  • Substance Abuse to Addictions, including Gambling, Food, Work, and Sex
  • Allergies including Foods, Seasonal, Water
  • Emotional 
  • Anti-Aging medicine (A4M)
  • Chemical, Mental and Physical
  • Applied Kinesiology or Investigative Muscle Testing
  • Auriculotherapy, including electronic, pressure, and lasting devices
  • Bio-Mechanical advice and direction to promote healing
  • Cupping, Scraping, and other Asian Techniques to relieve one’s Body of ‘Stressors’
  • Energy Work, non-force techniques harnessing one’s innate healing energies, like Bio-Energetic Synchronization Techniques, Bio Kinetics, Craniopathy, Cranio-Sacral Techniques, and a myriad more
  • Massage in many forms and techniques
  • Nutritional advice and direction on health and healing
  • Functional Medicine: when Foods, Diet, and Nutraceuticals are the Best Medicines


Monica Blough

Colon Hydrotherapist

In addition to being a business owner and a colon hydrotherapist, she is a wife, mother of three, and a new grandmother. Monica is also a dog mom to two walker hounds and has countless ducks and chickens. She lives about an hour above Boise in the mountains.

“I get asked daily why I do what I do. When I was only 14 years old, my Dad was diagnosed with stage three colon cancer. He passed away just a couple of months after my 17th birthday. My mother suffered through four types of cancers throughout her life. She eventually passed away from bladder cancer. Cancer and other illness are prevalent in the family. I decided this was not going to be my story! I began unpacking all the toxic garbage. I took control and responsibility of my diet, my environment, and my lifestyle. I learned we could not only blame illness on genetics. Often in families, we pass down bad habits, and those bad habits can be more powerful than bad genes. Poor diet, a lack of exercise, unclean foods, substance use, emotional baggage, abuse, and environmental factors often contribute more than our genetics.

Throughout my journey for health and wellness, I discovered Colon Hydrotherapy. Colonics absolutely changed my life and my husband’s life. The gut plays one of the most critical roles in health and wellness. When you’re doing Colon Hydrotherapy, you’re not only cleaning the colon/large intestine; you’re also detoxifying your lymphatic system and other organs like your liver. You will even flush out parasites. (I recommend pairing colonics with a parasite cleanse.) What you eliminate will blow your mind!

Colon hydrotherapy is an absolute game changer for your skin and metabolism. The average person carries approximately 5 to 20 pounds of accumulated waste in their colon, contributing to significant weight gain and illness. The system I use is known as the “open” system. It is a very gentle, gravity-fed system. It is also completely private. You do not need a doctor’s referral or a prescription to have a colonic. It truly is life-changing, and I recommend setting up a time to chat with me to learn more or schedule an appointment.

Colon hydrotherapy is not just a thing I do. The beautiful people I connect with are worth every moment. It’s a ministry. I am so blessed to have this opportunity with each and every person who walks through my door. I give ALL the glory to God; He has placed me in this position. I do this because I believe in it. I do this because I love it!”

Monica Blough
Wellness From Within  Beauty From Within


Caroline de los Reyes, FNTP, RWP, APN

Functional Nutrition Therapy Practitioner

She is passionate and strives to assist clients in finding 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 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, Certified GAPs Practitioner

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 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 bodies through food and nutrition.



Natalie Hart, CTNC

Heart Sound Recorder Specialist, Certified Transformational Nutrition Coach, HeartMath Certified Practitioner

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.


Carter Burenheide

Music Therapist

His passion for music started at an early age when he discovered a love for singing and spreading joy through music. Since then, he has become proficient on several instruments including guitar, piano, and drums. He enjoys playing a variety of music genres such as folk, rock, country, R&B, and jazz. Carter was first drawn to music therapy when he was playing music for his mother and observed the profound effect that music has on pain. He then became focussed on sharing the healing aspects of music and helping others optimize the supportive role it can play in their lives. In his free time, Carter enjoys spending time outdoors, playing gigs, longboarding, and hanging out with his cat Chicken Strip.


At the Karlfeldt Center our team is dedicated to supporting your health and wellness journey with a wide range of services. To discover what we have to offer, simply click on the “Services” tab in the top ribbon of our website. A drop-down menu will appear, showcasing our various services. Click on the one that interests you to learn more.

Take your time to explore our services and find what suits you best. If you have any questions or need further assistance, don’t hesitate to reach out to us. We’re here to provide excellent customer service and help you every step of the way. Call or book your appointment today, and let’s start your journey toward better health together!

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