Staci and all, I found this under Communications on the hospital website:

Communication Needs
Televisions

In-room television is available in every patient room.

Telephone Service

Local calls are available for no additional charge. Please ask your nurse on how to access an outside line.

Personal Electronics

Laptops and personal music/video players can be used in your room, but it must be inspected and approved for use by our Bio-Medical staff. Select Specialty Hospital is not responsible for any lost or stolen items. Cell phones may be used in designated areas.

Mail

Mail is delivered to Select Specialty Hospital daily with exception of Sunday and federal holidays. Outgoing mail can be dropped off at the nurses' station.

Interpreter Services

Select Specialty Hospital offers care-related interpreter services for patients with limited English proficiency. This service is free of charge. Please contact your nurse, physician, case manager, or Hospital Administrative staff for additional information.
My guess is that unless Phred has access to his own computer, emailing him directly is not possible. Maybe someone near there could take a laptop in to him and he could read emails of FB posts. I don't know who visits him, though.