Many instances of medical malpractice find their root in communication problems, especially when it comes to medical histories. While the doctor remains ultimately responsible for making a decision regarding your healthcare, treatment and diagnosis, bringing a medical history with you when seeing a new doctor can speed things up and open the communication lines. WikiHow has a great article on going about summarizing your medical history. But, even better, ask your doctor if he has obtained a copy or transfer of your chart from a previous physician.