The news reports are saying a lot of explosions happened at hospitals. Considering that pagers are still in common use by Western doctors, I'm wondering if they considered hospital staff to be acceptable casualties.
Random doctors in the hospital won't have these.
https://www.reuters.com/world/middle-east/pagers-drones-how-...
In July reuters was telling us how hezbollah was using pagers to defeat israel. Israel was smarter than them.
To put a slightly finer point on it: Even an uninvolved doctor somehow came to own a booby-trapped pager, they wouldn't be carrying it around every day unless it was configured to listen to the hospital's broadcast network of real medical messages, as opposed to leaving it tuned to Hezbollah High Command or whatever.