To a large extent, it is. The show takes inspiration from actual cases and tries to present a realistic account. However, there might be some artistic liberties taken for dramatic effect.
Season 2 of Dr Death is indeed based on true incidents. The creators have done research to bring those real stories to the screen, while adding some dramatic elements for entertainment purposes.
It depends. Sometimes what's presented as 'Dr Death' could be a mix of real facts and creative storytelling. There might be a kernel of truth, but it could be embellished or adapted for entertainment purposes.