The Trill doctor in charge of sickbay on the USS Titan-A, played by Tiffany Shepis, who treats the casualties of the ship's battles in the third season of Picard.
Doctor Joan Ohk is the chief medical officer of the USS Titan-A in the third season of Star Trek: Picard. She is a Trill and was played by Tiffany Shepis.
She runs sickbay through the Titan's encounter with the Shrike, treating Captain Shaw when he is badly wounded in the Ryton nebula and working alongside Beverly Crusher, who joins her staff in all but name once she and her son are brought aboard.
Ohk is a calm presence in a crew under strain and is seen in several episodes of the season.