Health Management Organizations

HMOs combine a stricter version of PPOs and POS plans. HMOs have a defined list of physicians, often much smaller than PPO networks, which you may see. You will not be covered at all if you see a physician outside your HMO network. Furthermore, you must also get a referral from your primary care HMO physician to see any specialist. However, these restrictions mean that you pay an extra low or no monthly premium.