Dr. Alan S. Cason Dr. Cason graduated from Life Chiropractic in December of 1986. He has been practicing chiropractic using the activator technique and serving the Shenandoah Valley for over 25 years. Since he began practicing chiropractic, Dr. Cason has completed many continuing educational classes and attended a wide variety of seminars and workshops across the country, ensuring that his patients receive the most comprehensive and advanced chiropractic care. Dr. Cason is Advanced Proficiency Rated with Activator Technique.