Patients randomized to Group 1 will receive visit-based HCV screening, as offered by clinic providers as part of usual care. Providers must identify at-risk patients who are eligible for HCV screening, understand the benefits of screening in this population, and enter orders for HCV Ab testing. If the HCV antibody is abnormal, providers must order appropriate follow-up tests including HCV viral load to confirm HCV infection. Once HCV is confirmed, providers must refer the patients for fibrosis assessment and treatment evaluation. These efforts are augmented by an established best practice alert and health maintenance reminders.

Patients randomized to Group 2 will receive low literacy, written materials about HCV screening among baby-boomers in English and Spanish. The invitation will include patient-centered educational materials that discuss the risk of HCV in baby boomers and the benefits and risks of HCV screening. The invitation will include a phone number to schedule the HCV antibody blood test. Written materials will be developed and validated in Spanish using the Spanish Language Translation Resource. Once a potential subject is identified and randomized in Group 2, an outreach invitation will be mailed out. Shortly after the letter, a bilingual patient navigator will place a follow-up call to this potential subject. These follow-up calls will occur in the 2nd - 4th week after mailing invitations; up to three attempts in total will be made to reach the patient to facilitate HCC screening completion.

The investigators will randomize all baby boomer patients (~12,000 patients) using a centrally maintained computer-generated list. Patients will be randomly assigned to one of two HCV screening strategies including: visit-based screening as part of usual care (Group 1) or mailed screening invitation outreach and centralized patient navigation (Group 2).

Proportion with HCV Ab within 3 months of randomization

Proportion with HCV Ab within 12 months of randomization

Proportion with HCV Viral Load within 3 months of positive antibody result