He really cares about his patients and wants to help them o a personal level. They are not just a paycheck to him. He takes time to care for each patient however they may need, even if it takes time out of his personal life, and even if he has to form a close bond with the patient in order to benefit them.
I have a soft spot in my heart for this character. That scene where she briefly appeared in the background was so sad---the nurse appeared to be congratulating her, and then Winona runs by barking, and Screw Loose gets a terrified "It wasn't me!" look on her face. And this pic is so lovely.