Go back to directory. Add to Address Book. David S Allen DC Work 8826 Rolling Rapids Road Humble Texas 77346 United Stateswork Work Phone: 281-904-0189work No Image Available International SOT Directories SOTO Europe SOTO Australasia Certifications Doctors who have advanced training and expertise in SOT and Cranial techniques or methods will have designated titles of: Certified SOT Practitioner (CSP) and Certified SOT Cranial Practitioner (CSCP). Please visit the certification page for more information. Guidelines for chiropractic practice, procedures and re-licensing information, for United States by state click here.