First off, ignore the inaccurate Amazon plot synopsis - after a car accident, a group of teens are whisked to a nearby hospital by a strangely convenient ambulance. One by one they're called to be seen, and gradually the cast begin to suspect that something wierd may be going on at the isolated hospital...
Robert Patrick's amusing as the mysterious Dr Benway in charge, and while the characters are dumb as fence-posts (especially one who believes an offer to get high from what might be the world's dodgiest looking hospital porter), it's interesting and filmed well enough to remain enjoyable. There's an attempt at a sickly desaturated colour scheme to heighten the atmosphere, and it has some tension. There's also an impressive attempt at some unusual gore. Not amazing, but enjoyably worth sitting through.