Glanced at the satmap of the area and saw this on the same street. It could be nothing - but kids and the Clinton's in the same area might be worth looking into.
https://duckduckgo.com/?q=15+old+house+ln+chappaqua%2C+ny&atb=v104-1&ia=maps&iaxm=maps
Right down the street is PEDIATRIC NEUROLOGICAL ASSOCIATION- could be nothing, it's a rich area and Valhalla med center is nearby.
https://www.dandb.com/businessdirectory/pediatricneurologicalassociation-chappaqua-ny-18770074.html
http://www.pediatricneurology.com/
https://www.childrenshospital.org/bchp/news
The Dr. is associated with Boston Children's Hospital which has some hits on QResear.ch
https://qresear.ch/?q=Boston+Children%27s+Hospital
Again, could be nothing.