There's a lot of talk around blockchain for healthcare at XMED. That said, a definite must watch on the topic is Don Tapscott's TEDTalk.
"Blockchain is a vast, global distributed ledger or database running on millions of devices and open to anyone, where not just information but anything of value — money, but also titles, deeds, identities, even votes — can be moved, stored and managed securely and privately."
~ Don Tapscott
There's a big opportunity to leverage between payers and providers because that is the relationship with the greatest friction. Preserving data and enforcing security are the areas blockchain can validate.