This is the name of the character
in Motley Crue's Hit song
Dr Feelgood. Dr Feelgood is a drug dealer that sells cocaine and other drugs to the mexican mob. HE is feared
by police oficers and has them
on his payroll. Since he distributes so much drugs the people on the streets
refer to him as Dr feelgood since he is the one you go to get a fix. The song
ends with Dr Feel
good getting arrested.