Pain fellows are not allowed to be forced to take anesthesia call. Pain call rarely is that difficult, most fellowships where, I interviewed with offered the opportunity to moonlight as a junior attending in the anesthesia program which paid as much or more than the pain fellowship salary. ACGME regulations only allow for 40 hours of moonlighting per month so unless you are bending the rules you will not be making more than 100K during the best fellowship. If you want a Cardiac or Pediatric anesthesia fellowship you will probably have to take call but it probably will be far less than rigorous than CA3 call.