Experienced Doctors and Therapists

Our multidisciplinary staff has decades of experience in the fields of sports chiropractic and physiotherapy, sports performance training, and therapeutic massage. We've built this comprehensive team to offer our patients the very best sports medicine and rehabilitation services offered in Idaho.

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Dr. Spangler has over 19 years of experience in the fitness and sports chiropractic fields.  He is the owner of Trailhead Sports Clinic and Myofly Therapeutic Massage and directs patient care.  He practices gentle manipulations, myofascial cupping, Graston Technique and rehabilitation training.  He is currently the Clinic Director for Trailhead Sports Clinic and Myofly Therapeutic Massage.

Dr. Spangler has a deep interest in fascial manipulation and soft tissue release techniques.  He will get your mobility back with various techniques then teach you how to keep it.  

Dr. Nate Spangler, MS, DC


Jim Thornburg MS, DC is a 2012 graduate of the University of Western States where he completed his Chiropractic training and also earned a Master degree in Exercise and Sport Science. Spending most of his career in Bend, Oregon as a solo practitioner he was able to work with many different types of professional and recreational athletes. Dr. Thornburg uses a gentle diversified manual adjusting technique when indicated. His other methods include various types of soft tissue manipulation like trigger point work and instrument assisted soft tissue therapy, to which he is the inventor of a treatment device, The T-Tool. Dr. Thornburg also see rehabilitative or corrective exercise as a crucial component to any change you want from the body. In his free time, he enjoys reading, being outdoors and spending time with his wife and 3 boys.

Dr. Jim Thornburg, MS, DC


Dr. Tweedt was a High School and Collegiate distance runner until he suffered an injury. It was then that he realized that he wanted to help other athletes with their injury recovery and prevention process. Dr. Tweedt has been dedicated to this mission with a post doctorate education in sports medicine, and over 28 years of experience in sports injury and family care. In addition to helping his patients, he enjoys the outdoors and spending time with family.

Dr. Tweedt is also certified in Dry Needling which is a technique used to help his patients heal faster and decrease their pain.  

Dr. Kendrick Tweedt, DC, CCSP


Jackie is a 20 year old Californian gal who's in love with the icy Boise winters. She is currently in her last year at Boise State University and finishing her degree in Health Science with a general emphasis. Jackie is always ready to greet you with a smile and enjoys helping any way she can with getting patients back on track to their optimum health!

Jackie Navarro, Front Office Administrator