As a member of a PPO (Preferred Provider Organization) health insurance plan, you'll be encouraged to use the insurance company's network of preferred doctors and hospitals. These healthcare providers have been contracted to provide services to the health insurance plan's members at a discounted rate. You typically won't be required to pick a primary care physician but will be able to see doctors and specialists within the network at your own discretion.

HMO (Health Maintenance Organizations) health insurance plans typically enable members to have lower out-of-pocket healthcare expenses but also offer less flexibility in the choice of physicians or hospital than other health insurance plans. As a member of an HMO, you'll be required to choose a primary care physician (PCP). Your PCP will take care of most of your healthcare needs. Before you can see a specialist, you'll need to obtain a referral from your PCP.

With an HMO health insurance plan you'll likely have coverage for a broader range of preventive healthcare services than you would through another type of plan. You may not be required to pay a deductible before coverage starts and your co-payments will likely be minimal. With an HMO plan, you typically won't have to submit any of your own claims to the insurance company.