Chiropractor
Dr. Natalie Lyle
Palmer College graduate with 25+ years of practice, Dr. Natalie has been adjusted since childhood by her father — also a chiropractor — and specializes in pediatric and prenatal care.
Read full bioAbout TCB
A Community Dedicated to Lasting Health
Evidence-based chiropractic care — delivered by a team of doctors who treat patients like family.
Our Story
More Than a Doctor's Office — A Community
Terry Chiropractic Boulder was founded in 1984 by Dr. Doug Terry, who built the practice around Chiropractic BioPhysics — a technique he had been refining since 1980. Today, Dr. Natalie Lyle and her son Dr. Alex Duff continue that work, having joined the office in 2022 to carry the legacy forward.
We believe true health comes from addressing the root cause of your problems — not masking symptoms with medications. We specialize in Chiropractic BioPhysics, the gold standard of spinal correction, backed by 280+ peer-reviewed research articles.
Our in-depth process begins with a thorough consultation, comprehensive movement analysis, computerized postural assessment, and digital X-rays to fully understand your unique condition. From there, we build a personalized treatment plan combining chiropractic adjustments, spinal traction, and therapeutic exercises to deliver permanent results.
Our office feels less like a doctor's office and more like a community — a place where the doctors and staff are welcoming, warm, and genuinely invested in your long-term health and happiness.
Serving Boulder, CO
Trusted Across Boulder — 9 Years Voted Best Chiropractor
40+
Years in Boulder
3
Generations of Chiropractors
280+
Peer-Reviewed Studies
32
Conditions Treated
Our Mission
“To empower patients to regain the freedom in their health and life through spinal correction, real answers to their problems, and long-term solutions.”
The Doctors
Meet Our Team
A mother–son chiropractic legacy with combined decades of experience.
Chiropractor
Dr. Alexander Duff
Third-generation chiropractor, CBP-certified, and author of “Think Inside the Body.” Adjusted on his second day of life, Dr. Alex helps patients break the cycle of chronic problems through specific, gentle care.
Read full bioWhat Sets Us Apart
Evidence-Based
Chiropractic BioPhysics — the most researched technique with 280+ peer-reviewed studies.
Root Cause Focus
We don't chase symptoms. Every treatment targets the underlying cause for permanent results.
Community Feel
Warm, welcoming atmosphere where you're treated like family — not just a patient number.
Recognition & Credentials
Best Chiropractor in Boulder County
Voted by Daily Camera readers — multi-year winner (2022, 2023).
Chiropractic BioPhysics® Certified
Practiced by only 5% of chiropractors worldwide — the most-researched technique in chiropractic, backed by 280+ peer-reviewed studies.
Established 1984
Founded in Boulder by Dr. Doug Terry. The Lyle family continues the practice today.
What Our Patients Say
“Very good results with posture, spinal alignment and recently with back pain following surgery. I prefer gentle chiropractic — not a lot of cracking, but subtle adjustments, traction and home exercises. Dr. Duff really listens!”
— Kathy T., Google review
“I had a left hip replacement and was reluctant to go to a chiropractor. Thanks to Dr. Duff, I don't think I will have the right hip done. Thank you Dr. Duff.”
— Maggie M., Google review
“The staff is incredibly friendly. I love their objective and analytical approach to chiropractic adjustments — they start with X-rays and track progress towards established goals. This is unlike any other chiropractor I have been to.”
— Chris K., Google review
“Terry Chiropractic has given me increased physical mobility with special emphasis in my neck and back. My knees are pain free. I feel 10 years younger and have an enhanced higher quality of life — and a better mindset that came along with the physical improvements.”
— David C., Google review
“Currently a patient and it's been life changing. If your back, neck, or hips are out of alignment you need to get yourself adjusted HERE. They have traction available as part of their care programs which is not offered at your everyday chiropractic center. This sets them apart.”
— Megan J., Google review
“A different kind of chiropractic care — starting with X-rays to understand what's actually going on, then using adjustments and traction to make a huge impact on my recovery while still allowing me to enjoy lifting and hiking.”
— Heather M., Google review
“Our family has loved going to TCB for improving our spines, posture, and overall health. Dr. Duff and Dr. Lyle have been wonderful at even adjusting our 4-month-old baby to ensure she has good health as well.”
— The May family, Google review
“TCB is great. The staff is all so kind and it's like one big family there — and as a patient you feel like that too. My pain has gotten so much better in the short time I've been going. I can't wait to see my re-exam X-rays to see how my spine has improved.”
— Susan M., Google review
New Patient Special
$79 — Your Full Evaluation
Consultation, neurological exam, movement analysis, postural assessment, digital X-rays (if needed), and your Doctor's Report of Findings.
Claim the Offer