Asian Americans are one of the fastest-growing racial groups in the United States, yet health data about them is often incomplete or misleading. Many national health surveys either omit Asian Americans, group all Asian subgroups into a single category, or extrapolate data from one subgroup to all others. These issues contribute to health disparities by hiding important differences in disease prevalence, risk factors, and healthcare access among Asian populations. There are three key problems: omission, aggregation, and extrapolation.