Reference and details below.

According to the Health Cloud Data Model Developer Guide, Program Management is a feature in Health Cloud that allows life science companies to track and manage care programs that offer products and services to patients and providers. With Program Management, life science companies can track the following three items about a care program:
The multiple marketing campaigns that enrollees are subjected to as part of the care program. This item can be tracked by using the CareProgramEnrolleeCampaign object, which represents a marketing campaign that targets a specific care program enrollee.
The products that are associated with a given care program. This item can be tracked by using the CareProgramEnrolleeProduct object, which represents a product or service that is offered to a care program enrollee.
The plans that enrollees have been engaged in as part of the care program. This item can be tracked by using the CareProgramEnrolleePlan object, which represents a plan or package that contains one or more products or services for a care program enrollee. The budget and expenses of the company's associated care program is not an item that can be tracked by using Program Management. The clinical indicators that need to be monitored in the care programs is not an item that can be tracked by using Program Management.

The three requirements for implementing patients or members in Health Cloud are ensuring the Person Account object is used, ensuring 1-to-1 Account to Contact relationship, and ensuring the Parent Account field is blank. These requirements are part of the Health Cloud data model and allow the consultant to model patients or members as individuals with personal and health information.