According to the Salesforce documentation1, when setting up Intelligent Sales in Health Cloud, you need to create records for accounts, contacts, and locations. Accounts represent the organizations or individuals that you sell to, such as hospitals, clinics, or pharmacies. Contacts represent the people who work at those accounts, such as physicians, nurses, or pharmacists. Locations represent the physical places where you visit your contacts, such as offices, wards, or labs1.

Expression Set Templates are the prebuilt feature that the payer should leverage to implement predefined rules for its prior authorization request review process. Expression Set Templates are reusable sets of expressions that can be used to evaluate business logic and trigger actions based on the results.

Encrypting the data using shield (A) and using field level security setting, record access setting and object permission (E) are two ways to prevent unauthorized users from accessing the data. Installing shield and enabling mask (B) is not enough to protect the data, as masking only obscures the data in reports and dashboards, but does not prevent access to the underlying data. Creating sharing sets and optimizing data using mask (D) are not relevant to data security.

Reference and details below.