@Howie a whole bunch of people did that during the DARPA challenge in 2015. It is possible, are you facing any challenges or have any questions?
Basically, you need to apply a twisting torque to turn the handle until you reach the stop and then pull the door in a circular motion or using compliance in some directions.
 
         Etienne_Samson
                    Etienne_Samson
                    
                 tarialys
                    tarialys
                    
                
Has anyone used a 2 finger adaptive gripper along with a UR5 or UR10 to open/close doors (office type, 3 hinged), along with a Torque/Force sensor?