How to filter and access the unindexed event parameters?

[sadityakumar9211]

I was doing a project, and I have an event

event AddedDoctor(
        address indexed doctorAddress,
        string indexed name, 
        string indexed doctorRegistrationId,
        uint256 dateOfRegistration,
        string specialization,
        address hospitalAddress
    );

I am not able to access all the parameters of this event to index it is The Graph. I am facing two issues :

1. string indexed name parameter is indexed so it is accessible by event.params.name but it is in the Bytes format. On searching the net I found that indexed strings or arrays are stored as hashes and not plain strings. How do I get unstuck.
2. I am not able to read unindexed parameters string specialization and address hospitalAddress using event.params.specialization and event.params.hospitalAddress. How do I access these unindexed parameters?