<P> Tess Pearson, portrayed by Eris Baker, is Randall and Beth's older daughter . She was promoted to series regular in season two . She was named after the Tessana ceiling fan Randall was going to purchase when hearing about Beth going into labor . Although not noticed acting out previously, she hid in her uncle Kevin's car (claiming she hates it at her house), when he was pulled over for speeding and charged with DUI; she later claimed she was just unhappy that Deja, the foster child, had to go home . Tess admitted one day (on the 20th anniversary of Jack's death) she had tried to prevent social workers from calling, worried that recent changes meant Randall wanted a "new life"; Randall reassured her that he would always be devoted to her . Tess is shown in the future as an adult, working as a social worker, with an older Randall meeting her for dinner like they have done while Tess was younger . </P> <P> Annie Pearson, portrayed by Faithe Herman, is Randall and Beth's younger daughter . She was also promoted to series regular in season two . On William's first night at Randall's family's house, when William wanted to step out, Annie convinced William that he might be happy if he stayed . </P> <Ul> <Li> Gerald McRaney as Dr. Nathan Katowski (aka "Dr. K"): The obstetrician who delivered Kate and Kevin . </Li> </Ul> <Li> Gerald McRaney as Dr. Nathan Katowski (aka "Dr. K"): The obstetrician who delivered Kate and Kevin . </Li>

Who plays dr k on this is us