How often you go to the chiropractor for spinal decompression depends on your injury and treatment plan. At an initial visit, the chiropractor will do a full body exam and design a unique program to meet the patient’s needs. Spinal decompression therapy usually consists of anywhere between 15 to 30 sessions. Each of these sessions will last between 30 and 45 minutes, and are typically scheduled over a 4 to 6 week time frame.