parkinsons disease
![](https://cdn.abcotvs.com/dip/images/15043012_biden-walking-img.jpg?w=660&r=16%3A9)
White House doctor offers explanation for Parkinson's expert visits
Dr. Kevin O'Connor confirmed that Dr. Kevin Cannard, the Parkinson's expert who visited the White House eight times in an eight-month span, "was the neurological specialist that examined President Biden for each of his annual physicals."