Oct 21, 2024 · Based on that data and other important insurance metrics, we rated the best health insurance companies of 2024 and gave each from one to five stars. The top health insurer is Kaiser Permanente with 4.2 (or, more precisely, 4.17) stars, according to our analysis, followed closely behind by Highmark with 4.1 (or 4.13) and Horizon with 4.1 (or 4.12).