I have regular visits with a cardiologist due to cardiac surgery and arrhythmia. My GP does not do followups on my heart, my cardiologist does the followups.
Joe is seeing a Parkinsons specialist. He has Parkinsons or Lewy Body disease (abnormal deposits in the brain). Both diseases would be treated by the same specialist and display similar symptoms.
The president is mentally gaga. The White House is lying to us.