Since its founding in 1966, the National Upper 
Cervical Chiropractic Association (NUCCA) has been dedicated to advancing a precise, measurable, and patient-focused approach to upper cervical chiropractic care.
Built upon the pioneering work of Dr. Ralph R. Gregory and Dr. John F. Grostic, NUCCA was established to promote education, research, clinical excellence, and the continual refinement of the NUCCA procedure. What began as a small group of dedicated practitioners has grown into an international organization supporting doctors, students, educators, and researchers around the world.
For more than six decades, NUCCA has remained committed to the principles that shaped its founding: objective analysis, ongoing learning, scientific inquiry, and a shared pursuit of excellence in patient care.
Explore the milestones below to learn how NUCCA has evolved and continues to advance its mission today.
The foundations of NUCCA can be traced to the collaboration between Dr. Ralph R. Gregory and Dr. John F. Grostic, whose work helped shape a precise and measurable approach to upper cervical chiropractic care.
Dr. Ralph R. Gregory founded the National Upper Cervical Chiropractic Association to provide a professional organization dedicated to education, research, and continued refinement of the NUCCA procedure.
As NUCCA grew, conferences, seminars, and professional development opportunities helped strengthen the organization and support practitioners committed to clinical excellence.
The Board Certification Program continued to develop into a more structured pathway of advanced education, testing, mentorship, and clinical skill development.
Today, NUCCA supports a global community of doctors, students, educators, researchers, and volunteers united by a shared commitment to precision, education, research, and patient care.
Founder of NUCCA and a driving force behind the development of the organization and its educational philosophy.
Pioneering researcher and clinician whose work helped establish the biomechanical foundations that continue to influence NUCCA today.
