I received this call today at 11:51 AM  - who is it?  Anybody know?

its from Lifespan,  a network of hospitals of hospitals in Rhode Island
www.lifespan.org

if anyone was in one of the hospitals recently, they call to check on you.

Google leads to a research article by the head of ophthalmic surgery at Brown Univ Medical School. It may be an automated outcall number for confirmation of reservations, gone haywire.

i had 5 calls at 11 pm from this #
you are unable to return the call

I just got a call from this number confirming an appointment I have scheduled with them for my kid. It was from Hasbro Children's Hospital. So it's most likely their central number for either confirmations or follow up calls.