parse a comma seperated string in different nodes #xslt 2.0

Below is the XML input:

<performer>
 <assignedEntity classCode="ASSIGNED">
   <id root="123"/>
   <addr>219 city, state, DE, 199</addr>                                
   <assignedPerson classCode="PSN">
     <name>Last , First , Middle, 12345</name>
   </assignedPerson>
 </assignedEntity>
</performer>

Expected XML output:

<Provider>
  <ID>12345</ID>
  <FName>First</Fname>
  <Lname>Last</Lname>
</Provider>

Please give a generalized solution, the above example that I gave does not have fixed text values, these are subject to change.

Thanks,