Increased travel burden was associated with a decreased likelihood of receiving adjuvant chemotherapy, regardless of insurance status. Patients with nonprivate insurance who resided in low-density oncologist areas were less likely to receive adjuvant chemotherapy. If these findings are validated prospectively, interventions to decrease geographic barriers may improve the timeliness and quality of colon cancer treatment.

The results of ASCO's 2017 survey indicate that oncology practices are challenged by day-to-day operations, often related to payment, reimbursement, and competition. Our findings likely represent conservative estimates of such burdens because they are driven by responses from midsized to large-sized organizations, which have lower relative administrative burden, greater market influence, and potentially better ability to adapt in a changing health care environment.

Efforts to survey oncologists about practice patterns will help determine if productivity and service delivery will change significantly. ASCO is committed to tracking oncologist supply and demand, as well as to providing timely analysis of strategies that will help address any shortages that may occur in specific regions or practice settings.