Oratt was a Vulcan physician in the service of the Vulcan High Command, who attended an Interspecies Medical Exchange conference on Dekendi III in 2152. He was one of three doctors that Doctor Phlox approached to see if any progress had been made in curing Pa'nar Syndrome. Sub-Commander T'Pol had contracted this disease through a mind meld, and because of the Vulcan prejudice towards mind melders, it had to be kept a secret.