How to create a view of nodes that are referenced by a node that references the current node? I have three content types: patient, patient medication, and physician. 

Using the Node Reference module, patient medication references the patient content type and the physician content type. How can I create a view with a contextual filter that does the following: When I view a physician node, I want to view all patients that the physician has interacted with. Using the two Node Reference fields in the patient medication content type, how can I display a block of unique patients that the physician has prescribed a medication to?

I basically have it set up like a relational table:
Patient &lt;-- Patient Medication --> Physician  (The arrows represent the node reference)
Create a view of content type Physician and set relationship between 
Patient --- Patient Medication &amp; Patient Medication --- Physician keep both relationship required.
Now add all field related with Patient nodes.
Here only a block display with patient and  Patient Medication.