ENS can be the decentralized domain use for this.
Establish a domain entity with subdomain for the users.
Establishing a protocol tied to a patient advocacy platform existing to add history on to the blockchain simply through the subdomain "fnamelnamepatid.entityname.eth" -
Could be bridged between an existing web2 patient management system and over to ens domains with the entity name . eth
Onboarding/education will need to occur at irl local level and start bottom up to get adoption from major payors/cms.