A Health Maintenance Organization (HMO) is a comprehensive healthcare benefit plan for which PHP has contracted with a wide range of doctors, hospitals, and other healthcare professionals to form a network of top-notch healthcare providers. Within the PHP network, members have open access to over 18,000 providers, which means members can choose the healthcare provider they want to see, from primary care to specialists and without any special arrangements through the plan. In order for benefits to be covered, a member must choose an in-network provider.