 Announce the president. Challenge me at the convention. The president on MSNBC's Morning Joe program. The White House visitor logs show a Parkinson's disease expert visited the White House eight times from last July to this March. One of those times to meet with the president's personal physician. We do know, according to a summary report released in February by the White House, that the president was seen by a neurologist and had shown no signs of Parkinson's.