Figure 1. Claims rates for influenza immunization from the same physician, another clinician, or no clinician, by year.

Annual median percentages of fee-for-service Medicare beneficiaries =65 years with claims for influenza immunization the previous year having current year claims from the same physician, another clinician, or no claim. Figure is based on claims reported to the Centers for Medicare & Medicaid Services by unique physician identifying numbers for West Virginia and includes physicians claiming at least 25 immunizations between September 1 and December 31 of each year. The percentages represent the median for each indicator across all such physicians in a given year.