Interesting challenge.
I think you can do this in your object / action override code, if you use the Skuid Redirect method and don’t run the page through Page Assignments.
I think your VF Page code for View under Related_Person__c would look something like this:
<apex:page action="{!redirect}&page=PatientDetailPage&Id="{!PatientId}"#tab_two" extensions="skuid.Redirects" standardController="Related_Person__c">
</apex:page>
You could also do this as a direct link in your skuid pages (rather than using the redirect infrastructure)