Chronic low back pain (CLBP) has no known effective treatment. While often treated with long-term opioid therapy, opioids do not work well for many patients and can cause serious side effects, including addiction, poorer mental health, and overdose death. Even when paired with a standard-of-care cognitive behavioral therapy (CBT), results are limited. Patients, families and clinicians are very interested in using alternative treatments for CLBP, especially complementary and integrative treatments such as mindfulness meditation (MM). MM helps train the mind to bring non-judgmental and accepting attention to present-moment experiences such as pain. MM offers an active and safe self-care approach to chronic pain that contrasts with the passive and potentially harmful nature of opioid treatment, and may prove more effective than CBT in helping improve health and well-being, and reduce reliance on opioids in adults with opioid-treated CLBP. Although this hypothesis is supported by early research, including a pilot study by the Principal Investigator, evidence on MM's effectiveness in this population is inconclusive, presenting a critical knowledge gap.