 As the NATO summit kicks off today in Washington, President Joe Biden is working to end speculation over his health. Has the president been treated for Parkinson's? No. Is he being treated for Parkinson's? No. After declining to say why Dr. Kevin Kennard, a neurologist and Parkinson's specialist, had visited the White House eight times in eight months, last night the president's personal physician sent a memo revealing Kennard had only examined Biden as part of his annual physical.