Don't go from an emergency-certified network to a consumer network
I read your article with interest, but as an RF systems designer, I think you overlooked an important point.
Everyone loves their 'cell'; it is their be-all and end-all of technology....many think it talks to satellites, and that the only things it can't do are things that no one has thought of writing an app for. It is, frankly, all they know in the communications world.
However, despite references to "HIPPA", the handy program that seems to be able to make or break any argument on medical matters regardless of the position, there is something FAR more important:
The cellular infrastructure is haphazard, fragmented, constructed in vastly different ways by varying carriers, and is simply NOT a defined life-safety system. Very, very few cellular base stations have back up power for more than a couple of hours of run time, and 1 in 20 has a generator. Backhaul routes from the sites to the cellular MTSOs are least-cost, non-redundant, and easily disrupted.
It does, and often has, completely collapse under heavy system load, or in the event of natural disaster. I point to the Boston Marathon, any busy sports or entertainment venue, earthquakes (even minor ones)....essentially anywhere great numbers of subscribers reach for the beloved 'cell' at once.
I can imagine the problems when Nurse Jones' battery dies, the service is cut off for a missed payment, or she decided to upgrade and change numbers without efficiently notifying the world.
Cellular infrastructure is fine for this posting I'm typing, two teenagers planning to cut class, or for planning lunch with a friend. But, for my upcoming surgery, when I need a pint of blood, I don't want it to depend on Nurse Jones knowing Dr. Brown's personal mobile number, both accounts being up to date, equipment being in good shape, and the system working. Even if hospital-subscribed, properly cleaned and maintained devices are used, it's still a consumer network, built with precious little redunancy, and engineered for sunny-day, normal conditions.
Regardless of the 'trendiness' of the 'cell', calls for the removal of healthcare-agency engineered, controlled, and operated life-safety communications systems are specious, and downright dangerous.
I'll trade you all the HIPPAs in the world for a reliable public-safety grade, properly installed and engineered, well-backed up professional communications system.