The cost of cancer care in United States was an estimated $183 billion in 2015 and is projected to rise by 30 percent by 2030, according to the American Cancer Society. While private and government insurance may cover much of the cost of care, even patients with insurance can struggle to pay for office visit co-payments, prescription medications or other cancer-related expenses. Yet limited data describes how financial hardship impacts patient behavior and how that in turn may impact patient health.