The overall objective of this proposal is to implement a smart phone application (app) + population management system to monitor rheumatoid arthritis (RA) disease activity between scheduled physician office visits. The population management system includes: 1) a web-based dashboard that consolidates incoming patient-reported data using pre-programmed algorithms to identify increases in disease activity, and 2) the population manager, a trained individual who monitors the web-based dashboard and connects patients with their healthcare providers (HCPs). The investigators central hypothesis is that the combined smart phone app + population management system will improve patient satisfaction and management of RA disease activity.

Inclusion Criteria:

• Diagnosis of RA by a board-certified rheumatologist
• Taking a DMARD (sulfasalazine, methotrexate, leflunomide, azathioprine, certolizumab, cyclosporine, adalimumab, etanercept, infliximab, golimumab, abatacept, tocilizumab, anakinra, tofacitinib, rituximab, hydroxychloroquine)
• Own a smart phone with either an Android or iPhone operating system
• Be English-speaking

Exclusion Criteria:

• Patients who do not plan on receiving follow-up care at the Brigham and Women's Hospital Arthritis Center