This class represents a Person who is named as a beneficiary of a Health Policy. Usually, this is the person who is paying for the premiums of the Health Policy, or the person on whose behalf an organization, such as their employer, is paying the premiums. In the case of government programs, this person is the named beneficiary. The concept which we chose to name "Subscriber" is known by multiple terms, depending on the setting. For all intents and purposes, Subscriber, Sponsor, Policy Holder, and Contract Holder are synonymous. Other terms which sometimes overlap and sometimes do not include: Insured-Or-Member, Member, Beneficiary, Enrollee, Cardholder, Recipient, and Covered Person. For the most part, these terms relate closer to the person being treated (what we call the Covered Patient) than to the named Subscriber. It is worth noting though that not all Insured-Or-Members are necessarily ever patients, only those that have actually been treated are patients. The person referred to by many of these concepts, especially Insured-Or-Member, may be either a Dependent, or may be the Subscriber (i.e., "self"). The Subscriber may have dependents who may or may not be known by name to the Payer. The Payer may or may not issue insurances cards to those dependents, so the term "Cardholder" does not distinguish between the Subscriber and their dependents. In the Department of Defense, active duty personnel are automatically enrolled into the "direct care" program as a Subscriber. Retirees are eligible to enroll in several programs such as Tricare for Life. In this case, person is still considered a Subscriber. The following definitions are from eHealthInsurance.org: Subscriber: "This term may be used in two senses: First, it may refer to the person or organization that pays for health insurance premiums; secondly, it may refer to the person whose employment makes him or her eligible for group health insurance benefits." Enrollee: "An eligible person or eligible employee who is enrolled in a health insurance plan. Dependents are not referred to as enrollees." Member: "Anyone covered under a health insurance plan, an enrollee or eligible dependent."