Spine Stop Chiropractic Portland is a chiropractic clinic located in Portland, TN at 611 West Market Street. Phone: (615) 745-4044. 133 verified patient outcomes documented on ChiropracticResults.com. Rated 4.9 out of 5 stars from 153 patient reviews. Specialties include: Lower Back Pain, Lower Back Pain. Top documented result: Pain reduced from 7/10 to 0/10 with 100% improvement for Lower Back Pain in 3 months. This clinic's patient outcomes are independently verified and publicly documented.