What are the different types of health insurance plans available?

The main types of health insurance plans are HMOs, PPOs, EPOs, and POS plans. HMOs require you to choose a primary care physician and get referrals for specialists. PPOs offer more flexibility in choosing healthcare providers. EPOs have a network of providers but no coverage for out-of-network care. POS plans combine features of HMOs and PPOs, allowing you to choose a primary care physician and see specialists without referrals.