Who We Are

I began my chiropractic education at Life Chiropractic College in Marietta, Georgia, in 1986, where I studied in the Doctor of Chiropractic program and competed as a member of the Running Eagles rugby team. That year, the team won its first National Championship—an experience that shaped my understanding of discipline, performance, and recovery.

During a practice collision, I sustained a fractured cheekbone and a concussion. After weeks of persistent neurological symptoms, I received an upper cervical adjustment. The change was immediate and profound. In that moment, I experienced firsthand how precise correction at the cranio-cervical junction could dramatically influence neurophysiology, mental clarity, and physical performance. That experience became the catalyst for a lifelong clinical focus on the cranio-cervical junction.

Since entering practice in York, Pennsylvania in 1991—alongside my wife and partner, Dr. Selina Sigafoose-Jackson—I have accumulated over 35 years of full-time clinical practice, representing approximately 60,000 hours of patient care and more than 1.4 million patient visits. Throughout that time, my focus has been singular: improving clinical reliability at the cranio-cervical junction while reducing unnecessary complexity, cost, and technical variability.

The Jackson Cranio-Cervical Junction Method (JCCJM) emerged from this work—not as a philosophy, but as a refined, repeatable clinical system. JCCJM was developed by systematically eliminating variables, prioritizing functional neurological indicators, and focusing on biomechanical balance at the cranio-cervical junction. The result is a method that is specific, efficient, adaptable to real-world practice, and accessible to chiropractors seeking a principled yet measurable approach to upper cervical care.

JCCJM is designed for chiropractors who want more than technique—it is for those who value clinical clarity, reproducibility, patient-centered outcomes, and participation in ongoing research aimed at advancing the profession.