Patients with colorectal cancer (CRC) who undergo potentially curative surgery have been shown to have an increased risk of disease recurrence. To reduce this risk, several professional societies have issued guidelines that specify a combination of regularly scheduled office visits, colonoscopy, and the carcinoembryonic antigen (CEA) test to detect changes that could indicate a recurrence. The hope is that early detection of recurrence can enable clinicians to treat patients appropriately and prolong their lives. Unfortunately, studies show that some patients may not receive these services as recommended. In fact, others may be sent for CT or PET scans even though they aren