Which of the following actions is NOT necessary when entering patient contact information?

Providing home phone numbers for all contacts is not necessary when entering patient contact information. While having accurate contact information is important for communication and coordination of care, not every patient is required to provide a home phone number for each contact listed. Many patients may prefer to provide only specific types of contact information, like a mobile phone or email address, which can be sufficient for reaching them.

In a healthcare setting, it's essential to focus on collecting the most relevant information that supports patient care, emergency situations, and administrative needs, rather than ensuring every single contact point is comprehensive. Therefore, while having home phone numbers can be useful, it is not obligatory for the entry of patient contact information. The other options, such as entering a guarantor's information, adding an emergency contact, and listing the patient's primary care provider, are generally considered necessary components for a complete and functional patient information record.