I edc the Fischer bullet pen- compact, handy and writes at any angle.
For work on the ambulance, I use the ZT 0010blk- has a carbide glass breaker tip uses the Fischer refill.
For use in the hospital, I use a pentel EnerGel 0.7- smooth writing and cheap enough that if it "walks away" I won't miss it too much.
At at home I use the Prometheus pen with a montblanc cartridge- amazing craftsmanship and smooth writing.