ATI Physical Therapy, Inc. is a healthcare company. It is an outpatient physical therapy provider in the United States. It specializes in outpatient rehabilitation and adjacent healthcare services, with approximately 923 clinics. It offers a variety of services within its clinics, including physical therapy to treat spine, shoulder, knee and neck injuries or pain; work injury rehabilitation services, including work conditioning and work hardening; hand therapy; and other specialized treatment services. It provides services through its ATI Worksite Solutions (AWS) program, Management Service Agreements (MSA), and Sports Medicine arrangements. AWS is an on-site service that provides customized cost-saving injury prevention programs, work-related injury assessment services, wellness offerings and consultations for employers. MSA arrangements provides management and physical therapy-related services to physician-owned physical therapy clinics. It offers sports physical therapy services.