Kaiser Permanente is the best health insurance company that offers Affordable Care Act (ACA) plans. Blue Cross Blue Shield, Aetna and Oscar also rank highly in our analysis of health plans.

From comparing health insurance plans to understanding out-of ... Our opinions are our own. Here is a list of our partners and here's how we make money.

California-based health care plans that made the Fortune list include: To see the full list, visit greatplacetowork.com. "There are not enough words to describe how proud I am of IEHP being named ...