PROVIDENCE, R.I. (AP) — If David Letterman put together a Top Ten list of hospitals, Rhode Island Hospital would probably be No. 1.

The longtime host of “The Late Show with David Letterman,” who stepped down in 2015, thanked the staff of the hospital’s emergency department in a video Thursday in which he disclosed that he was visiting Providence with his son last August when he fell on the sidewalk, struck his head, and fell unconscious.

The video was posted by Lifespan, the hospital’s parent company.

He says the experience was scary at the time, but the staff put him at ease.