Prevent form data loss from refetching and add guard statement for ph…

…ysician

client/src/pages/patients/PatientRegistration.jsx

@@ -41,6 +41,10 @@ export default function PatientRegistration() {
         throw new Error('Failed to fetch patient.');
       }
     },
+    // disable retry and refetch on window focus to prevent data loss 
+    // from triggering form.initialize()
+    retry: false,
+    refetchOnWindowFocus: false
   });
 
   const form = useForm({
@@ -130,7 +134,7 @@ export default function PatientRegistration() {
 
       setInitialPhysicianData({
         id: physician ? physician.id : '',
-        name: `${physician.firstName} ${physician.lastName}`,
+        name: physician ? `${physician.firstName} ${physician.lastName}`: '',
       });
 
       const patientData = {