The "Rock 'n Roll Doctor" is his drug dealer, in my interpretation. "He gonna blow me away," is a reference to coke. (Blow = coke). "Sick and tired of hearing 'bout the world and its hang-ups" is the malady and his "Rock 'n Roll Doctor" provides the cure.
The "Rock 'n Roll Doctor" is his drug dealer, in my interpretation. "He gonna blow me away," is a reference to coke. (Blow = coke). "Sick and tired of hearing 'bout the world and its hang-ups" is the malady and his "Rock 'n Roll Doctor" provides the cure.