Telehealth Physical Therapy for Chronic Back Pain - Ancillary Study to NCT03859713

Inclusion Criteria: * Age 18 - 64 years at the time of enrollment. * Meets NIH Task Force definition of chronic LBP based on two questions: 1) How long has LBP has been an ongoing problem for you? and 2) How often has LBP been an ongoing problem for you over the past 6 months? A response of greater than 3 months to question 1, and "at least half the days in the past 6 months" to question 2 is required to satisfy the NIH definition of chronic LBP. * Healthcare visit for LBP in the past 90 days. * At least moderate levels of pain and disability requiring ODI score \>24 and pain intensity rating \> 4. Exclusion Criteria: * Evidence of serious pathology as a cause of LBP including neoplasm, inflammatory disease (e.g., ankylosing spondylitis), vertebral osteomyelitis, etc. * Evidence of a specific spinal pathology as the cause of LBP including spine fracture, spinal stenosis, radiculopathy, etc. * Knowingly pregnant * Unable to participate in telehealth due to lack of technology or internet access * Has received physical therapy for LBP in prior 90 days * Currently receiving substance use disorder treatment * Any lumbar spine surgery in the past year.