Trying to create a network infrastructure for a medical clinic

I am new in this field, as I am a trainee security engineer, and i'm also on my way to get my CCNA certification.

I was asked by a friend of mine if I can create the network infrastructure for a medical clinic with 8 doctor's offices that he just built and I am wondering what should I primarly focus on.

Instead of the AD, routers and switches what is mandatory to be in this network? I am not really sure if I should choose between a Firewall or an IPS or have both of them or something else, as there will be protected health information that shouldn't ever get outside of the network.

Some help / pieces of advice would be much appreciated. Thank you