I just searched for this Cameron Kyle-Sidell.
I found him at Maimonides Medical Center, Brooklyn, but without any photo, so I can't verify if the one in the video is really that MD.
https://www.maimonidesmed.org/find-a-doctor/find-a-doctor/cameron-kylesidell
http://archive.is/F1KWC
His twitter is not verified, but that doesn't mean anything.
This article seems to show him and it seems to match, can't find anything else atm.
https://gothamist.com/news/inside-one-brooklyn-hospitals-scramble-to-prepare-for-surge-in-coronavirus-patients
http://archive.is/Txbnh
Twitter was created in 2016, didn't tweet almost anything except now.