Financial disaster

I think my dad has dementia or Alzheimer’s, or maybe his cancer has spread and he has mets to the brain. I’m not certain this is the right sub to post on, but if there’s a better one I’m happy to post there too.

He is massively behind on his taxes and his finances are so bizarre and spread out to keep them from my mom, that I don’t know if we could ever find everything if he were to pass suddenly. I’m worried about all his properties and the back taxes most of all right now.

I’m working on getting a diagnosis or a better understanding of what has been going on, but I need to find some sort of accountant or financial support person to come and hands on help with the taxes and stuff. Is there a title for this job? Is this a specialty I can seek out? I’m so lost, and I don’t know where to go from here. I’m just coming off my own cancer treatments and drowning in work, so I can’t go over and do this myself, but I don’t know where to turn for a life boat. His memory is at a place that I genuinely don’t think he can safely do his own taxes at the moment.

Ps if you have recommendations on the right kind of doctor to go to in order to get your loved one diagnosed with memory issues, I’d love feedback. I’m currently trying to get him to let me go to an appointment with his PCP.